Memorial service held for model found dead in Missouri mansion

Friday, December 31, 2010

A memorial service was held Thursday for Adrienne Nicole Martin, the model found dead two weeks ago in the Missouri, US mansion of former Anheuser-Busch CEO August Busch IV. Martin, of Native American ethnicity, was 27 years old when she died of unknown causes, said investigators.

Martin, who had been dating the 46-year-old Busch for “the last several months” according to friends, was a native of Springfield. She had previously been married to 45-year-old doctor Kevin J. Martin until February 2009, when they divorced, and had joint custody of their eight-year-old son. Adrienne Martin had a profile on iStudio, a modeling website, where she said she wanted to become an art therapist. She also expressed a desire to “to do beer advertising” and work in the modeling industry. At the time of her death, Martin had been working toward a master’s degree in art therapy.

The memorial service for Martin was held at South Haven Baptist Church in Springfield. Busch was not among the estimated 100 people attending the service, nor was he mentioned during it. The only speaker was the church’s pastor, Scott Watson, who read letters from Martin’s friends. Her son and other relatives sat in the front row while she was remembered as a gifted artist and dedicated mother. Lacy Elet, one of Martin’s friends, later said Martin was happy that “her life was finally in order.” Her obituary in the Springfield News-Leader called Busch “the love of her life.” However, one of Martin’s uncles, Andy Eby, said after the service, “There are too many questions and not enough answers.”

Martin was found unconscious by Michael Jung, who worked at Busch’s mansion, at 12:30 p.m. local time (18:30 UTC) on December 19. At 1:12 p.m., Jung called emergency services, saying, “This girl’s just not waking up.” When asked if she was breathing, Jung responded with, “We don’t know. It’s dark back there. I’m gonna get a light and try and see.” At 1:26 p.m., Martin was pronounced dead at the scene by emergency workers. Law enforcement officials said the room was dark because there were blackout “curtains drawn in the bedroom.”

An autopsy on Martin’s body did not find any trauma-related injuries, and the official cause of death has not been established by investigators. A toxicology report, expected to take several weeks, will likely be used to determine the reason Martin died. Police said Martin’s body did not exhibit any “apparent signs of trauma or other indications of cause of death.” According to her ex-husband, Adrienne Martin had a rare heart condition, called Long QT syndrome, which can cause palpitations and sudden cardiac death. Kevin Martin said his ex-wife never sought medical advice on her condition and did not talk about it with friends.

Police said that Busch was home at the US$2 million mansion when Martin was discovered, and that the ongoing investigation is being handled by the Frontenac Police Department and the St. Louis County Medical Examiner’s Office. Art Margulis, a lawyer for August Busch IV, said Martin was visiting the Huntleigh residence and that there is “absolutely nothing suspicious” surrounding her death.

Israel Journal: Is Yossi Vardi a good father to his entrepreneurial children?

Thursday, December 20, 2007

Wikinews reporter David Shankbone is currently, courtesy of the Israeli government and friends, visiting Israel. This is a first-hand account of his experiences and may — as a result — not fully comply with Wikinews’ neutrality policy. Please note this is a journalism experiment for Wikinews and put constructive criticism on the collaboration page.

This article mentions the Wikimedia Foundation, one of its projects, or people related to it. Wikinews is a project of the Wikimedia Foundation.

Dr. Yossi Vardi is known as Israel’s ‘Father of the Entrepreneur’, and he has many children in the form of technology companies he has helped to incubate in Tel Aviv‘s booming Internet sector. At the offices of Superna, one such company, he introduced a whirlwind of presentations from his baby incubators to a group of journalists. What stuck most in my head was when Vardi said, “What is important is not the technology, but the talent.” Perhaps because he repeated this after each young Internet entrepreneur showed us his or her latest creation under Vardi’s tutelage. I had a sense of déjà vu from this mantra. A casual reader of the newspapers during the Dot.com boom will remember a glut of stories that could be called “The Rise of the Failure”; people whose technology companies had collapsed were suddenly hot commodities to start up new companies. This seemingly paradoxical thinking was talked about as new back then; but even Thomas Edison—the Father of Invention—is oft-quoted for saying, “I have not failed. I have just found ten thousand ways that won’t work.”

Vardi’s focus on encouraging his brood of talent regardless of the practicalities stuck out to me because of a recent pair of “dueling studies” The New York Times has printed. These are the sort of studies that confuse parents on how to raise their kids. The first, by Carol Dweck at Stanford University, came to the conclusion that children who are not praised for their efforts, regardless of the outcome’s success, rarely attempt more challenging and complex pursuits. According to Dweck’s study, when a child knows that they will receive praise for being right instead of for tackling difficult problems, even if they fail, they will simply elect to take on easy tasks in which they are assured of finding the solution.

Only one month earlier the Times produced another story for parents to agonize over, this time based on a study from the Brookings Institution, entitled “Are Kids Getting Too Much Praise?” Unlike Dweck’s clinical study, Brookings drew conclusions from statistical data that could be influenced by a variety of factors (since there was no clinical control). The study found American kids are far more confident that they have done well than their Korean counterparts, even when the inverse is true. The Times adds in the words of a Harvard faculty psychologist who intoned, “Self-esteem is based on real accomplishments. It’s all about letting kids shine in a realistic way.” But this is not the first time the self-esteem generation’s proponents have been criticized.

Vardi clearly would find himself encouraged by Dweck’s study, though, based upon how often he seemed to ask us to keep our eyes on the people more than the products. That’s not to say he has not found his latest ICQ, though only time—and consumers—will tell.

For a Web 2.User like myself, I was most fascinated by Fixya, a site that, like Wikipedia, exists on the free work of people with knowledge. Fixya is a tech support site where people who are having problems with equipment ask a question and it is answered by registered “experts.” These experts are the equivalent of Wikipedia’s editors: they are self-ordained purveyors of solutions. But instead of solving a mystery of knowledge a reader has in their head, these experts solve a problem related to something you have bought and do not understand. From baby cribs to cellular phones, over 500,000 products are “supported” on Fixya’s website. The Fixya business model relies upon the good will of its experts to want to help other people through the ever-expanding world of consumer appliances. But it is different from Wikipedia in two important ways. First, Fixya is for-profit. The altruistic exchange of information is somewhat dampened by the knowledge that somebody, somewhere, is profiting from whatever you give. Second, with Wikipedia it is very easy for a person to type in a few sentences about a subject on an article about the Toshiba Satellite laptop, but to answer technical problems a person is experiencing seems like a different realm. But is it? “It’s a beautiful thing. People really want to help other people,” said the presenter, who marveled at the community that has already developed on Fixya. “Another difference from Wikipedia is that we have a premium content version of the site.” Their premium site is where they envision making their money. Customers with a problem will assign a dollar amount based upon how badly they need an answer to a question, and the expert-editors of Fixya will share in the payment for the resolved issue. Like Wikipedia, reputation is paramount to Fixya’s experts. Whereas Wikipedia editors are judged by how they are perceived in the Wiki community, the amount of barnstars they receive and by the value of their contributions, Fixya’s customers rate its experts based upon the usefulness of their advice. The site is currently working on offering extended warranties with some manufacturers, although it was not clear how that would work on a site that functioned on the work of any expert.

Another collaborative effort product presented to us was YouFig, which is software designed to allow a group of people to collaborate on work product. This is not a new idea, although may web-based products have generally fallen flat. The idea is that people who are working on a multi-media project can combine efforts to create a final product. They envision their initial market to be academia, but one could see the product stretching to fields such as law, where large litigation projects with high-level of collaboration on both document creation and media presentation; in business, where software aimed at product development has generally not lived up to its promises; and in the science and engineering fields, where multi-media collaboration is quickly becoming not only the norm, but a necessity.

For the popular consumer market, Superna, whose offices hosted our meeting, demonstrated their cost-saving vision for the Smart Home (SH). Current SH systems require a large, expensive server in order to coordinate all the electronic appliances in today’s air-conditioned, lit and entertainment-saturated house. Such coordinating servers can cost upwards of US$5,000, whereas Superna’s software can turn a US$1,000 hand-held tablet PC into household remote control.

There were a few start-ups where Vardi’s fatherly mentoring seemed more at play than long-term practical business modeling. In the hot market of WiFi products, WeFi is software that will allow groups of users, such as friends, share knowledge about the location of free Internet WiFi access, and also provide codes and keys for certain hot spots, with access provided only to the trusted users within a group. The mock-up that was shown to us had a Google Maps-esque city block that had green points to the known hot spots that are available either for free (such as those owned by good Samaritans who do not secure their WiFi access) or for pay, with access information provided for that location. I saw two long-term problems: first, WiMAX, which is able to provide Internet access to people for miles within its range. There is already discussion all over the Internet as to whether this technology will eventually make WiFi obsolete, negating the need to find “hot spots” for a group of friends. Taiwan is already testing an island-wide WiMAX project. The second problem is if good Samaritans are more easily located, instead of just happened-upon, how many will keep their WiFi access free? It has already become more difficult to find people willing to contribute to free Internet. Even in Tel Aviv, and elsewhere, I have come across several secure wireless users who named their network “Fuck Off” in an in-your-face message to freeloaders.

Another child of Vardi’s that the Brookings Institution might say was over-praised for self-esteem but lacking real accomplishment is AtlasCT, although reportedly Nokia offered to pay US$8.1 million for the software, which they turned down. It is again a map-based software that allows user-generated photographs to be uploaded to personalized street maps that they can share with friends, students, colleagues or whomever else wants to view a person’s slideshow from their vacation to Paris (“Dude, go to the icon over Boulevard Montmartre and you’ll see this girl I thought was hot outside the Hard Rock Cafe!”) Aside from the idea that many people probably have little interest in looking at the photo journey of someone they know (“You can see how I traced the steps of Jesus in the Galilee“), it is also easy to imagine Google coming out with its own freeware that would instantly trump this program. Although one can see an e-classroom in architecture employing such software to allow students to take a walking tour through Rome, its desirability may be limited.

Whether Vardi is a smart parent for his encouragement, or in fact propping up laggards, is something only time will tell him as he attempts to bring these products of his children to market. The look of awe that came across each company’s representative whenever he entered the room provided the answer to the question of Who’s your daddy?

Death of Kentucky census worker considered suicide

Wednesday, November 25, 2009

Kentucky State Police said yesterday that the September 12 death of census worker Bill Sparkman was suicide. His body was found naked in a Clay County, Kentucky cemetery, with “Fed” written on his chest and his census identification taped to his neck. This prompted widespread speculation that anti-government sentiment was responsible. However, police now believe that Sparkman deliberately killed himself, and tried to make it look like murder so his son could receive an insurance payout. Trooper Don Trosper, a Kentucky State Police spokesman, said, “[w]e believe this was an intentional act. We believe the aim was to take his own life.”

This conclusion is based on the police’s analysis of several elements of the crime scene; Sparkman was not hanged in the typical manner; his knees were less than six inches off the ground, and he could have avoided death simply by standing up before he suffocated. Captain Lisa Rudzinski, a leader of the investigation stated, “We do not believe he was placed in that position.” The letters of the word “Fed” were written bottom first, which is unlikely if they had been written by an attacker. The rag found in his mouth contained only Sparkman’s DNA. Police also believed he left glasses taped to his head so he could see while preparing.

Police suspect Sparkman’s motives included debt, failure to find a full-time job, and a desire to provide for his son through his life insurance.

Wikinews interviews U.S. Libertarian presidential candidate Wayne Allyn Root

Wednesday, February 6, 2008

Wikinews held an exclusive interview with Wayne Allyn Root, one of the candidates for the Libertarian Party nomination for the 2008 U.S. presidential election.

Root is the founder and chairman of Winning Edge International Inc., a sports handicapping company based in Las Vegas, Nevada. In addition, he is an author and a television producer, as well as an on-screen personality both as host and guest on several talk shows.

Root, a long-time Republican, declared his candidacy for the Libertarian Party on May 4, 2007.

He says he is concerned about the qualities of many who run for president, and fears that they do not know the needs of American citizens. He also says that they cater to big businesses instead of small ones.

He has goals of limiting the federal government and believes that the US went into Iraq for wrong reasons. A strong supporter of the War on Terror, he feels that it was mishandled. He has conservative values and came from a blue collar family in New York. He graduated from Columbia University with fellow presidential hopeful Barack Obama in 1983.

Root believes that America is in trouble and hopes to change that if elected.

French workers use threats in compensation demand

Friday, July 17, 2009Following similar threats by workers at New Fabris and Nortel, workers at JLG in Tonneins, France, threatened to blow up several platform cranes. The JLG factory announced in April 2009 that it will fire 53 of its 163 workers by the end of 2009, while the remaining 110 jobs will not be secure over the next 2 years.

JLG Tonneins was acquired in 2006 with its parent JLG Industries, a maker of aerial work platforms, by the U.S.-based Oshkosh Corporation. Despite being hugely profitable in the past, production has been much reduced since 2008 with the contraction of the construction industry and lower demand for its products. Despite excellent past results the new American management demanded sweeping cuts at the company.

In the view of locals, “the company’s actions are a disgrace given the expensive perks, such as official cars, for its corporate fat cats, compared to the sacrifice, silence, and dignity demanded by the company of those it has made redundant.”

The management offered severance pay of 3,000 (US $4,200), however the workers demanded a severance package commensurate with “the wealth that their labor has generated.” Worker’s delegates requested a “supra-legal” payment of € 30,000, on Thursday 16 of July the management responded with a counter offer of € 16,000. On Thursday night the worker’s actions secured the € 30,000 settlement initially demanded.

Ukraine opposition candidate Yushchenko is suffering from a Dioxin intoxication, doctors say

Saturday, December 11, 2004

VIENNA –Doctors from the Rudolfinerhaus clinic in Vienna say “there is no doubt” Ukrainian opposition leader Victor Yushchenko was poisoned with Dioxin.

Yushchenko’s body had about 1,000 times more than the normal concentration of the toxin. It is unknown if there were any other poisons in his system.

Although it has not yet been proven that the poisoning was deliberate, doctors suspect it was. “We suspect a cause triggered by a third party,” said Michael Zimpfer, head doctor at the Rudolfinerhaus clinic. He suggested the poison may have been administered orally, through food or drink.

Today’s announcements are a follow-up of an earlier press conference, where Dr. Korpan that there were three hypotheses under consideration, one of them involving dioxin. He did not reveal what the other two hypotheses were. Dr. Michael Zimpfer, director of the Rudolfinerhaus clinic emphasized that time there was no proof yet to specify the substance causing the illness.

Yushchenko left Kiev on Friday (2004-10-12) for further examination in Vienna. When Yushchenko fell ill on October 6th, Ukrainian doctors had initially diagnosed food poisoning, leading to speculation that he had been poisoned deliberately. The illness has disfigured Yushchenko’s body and face which doctors say could take up to two years to heal.

He fell seriously ill on the September 6th, during his presidential campaign. Yushchenko was taken to the Rudolfinerhaus clinic of Vienna, where he stayed for four days under Dr. Korpan’s care. He was diagnosed with “acute pancreatitis, accompanied by interstitial edematous changes.” These symptoms were said to be due to “a serious viral infection and chemical substances which are not normally found in food products” as his campaign officials put it. In laymans terms, he developed an infection in the pancreas and got a bad skin condition that disfigured his face with cysts and lesions. The skin condition has similarities with the chloracne associated with dioxin posioning according to a British toxicologist John Henry.

Earlier, doctor Nikolai Korpan of Rudolfinerhaus clinic confirmed today that the illness of Ukrainian presidential candidate Viktor Yushchenko was caused by an attempt to kill him.

  • Ukraine political crisis – Wikinews’ special coverage portal

Ukraine opposition candidate Yushchenko is suffering from a Dioxin intoxication, doctors say

Saturday, December 11, 2004

VIENNA –Doctors from the Rudolfinerhaus clinic in Vienna say “there is no doubt” Ukrainian opposition leader Victor Yushchenko was poisoned with Dioxin.

Yushchenko’s body had about 1,000 times more than the normal concentration of the toxin. It is unknown if there were any other poisons in his system.

Although it has not yet been proven that the poisoning was deliberate, doctors suspect it was. “We suspect a cause triggered by a third party,” said Michael Zimpfer, head doctor at the Rudolfinerhaus clinic. He suggested the poison may have been administered orally, through food or drink.

Today’s announcements are a follow-up of an earlier press conference, where Dr. Korpan that there were three hypotheses under consideration, one of them involving dioxin. He did not reveal what the other two hypotheses were. Dr. Michael Zimpfer, director of the Rudolfinerhaus clinic emphasized that time there was no proof yet to specify the substance causing the illness.

Yushchenko left Kiev on Friday (2004-10-12) for further examination in Vienna. When Yushchenko fell ill on October 6th, Ukrainian doctors had initially diagnosed food poisoning, leading to speculation that he had been poisoned deliberately. The illness has disfigured Yushchenko’s body and face which doctors say could take up to two years to heal.

He fell seriously ill on the September 6th, during his presidential campaign. Yushchenko was taken to the Rudolfinerhaus clinic of Vienna, where he stayed for four days under Dr. Korpan’s care. He was diagnosed with “acute pancreatitis, accompanied by interstitial edematous changes.” These symptoms were said to be due to “a serious viral infection and chemical substances which are not normally found in food products” as his campaign officials put it. In laymans terms, he developed an infection in the pancreas and got a bad skin condition that disfigured his face with cysts and lesions. The skin condition has similarities with the chloracne associated with dioxin posioning according to a British toxicologist John Henry.

Earlier, doctor Nikolai Korpan of Rudolfinerhaus clinic confirmed today that the illness of Ukrainian presidential candidate Viktor Yushchenko was caused by an attempt to kill him.

  • Ukraine political crisis – Wikinews’ special coverage portal

Magnitude 7.7 earthquake strikes Antofagasta, Chile

Thursday, November 15, 2007

Authorities in Chile say at least two people have been killed and more than 100 injured after a powerful earthquake struck in the north, sending terrified residents into the streets and cutting power to some of the country’s copper mines. According to the United States Geological Survey (USGS), the quake struck on Wednesday, November 14, 2007 at 15:40:53 UTC.

Officials said two women were killed Wednesday when their houses in the town of Tocopilla collapsed during the 7.7 magnitude earthquake. They also said another person may have died in a tunnel collapse there, which has trapped some 50 workers.

Government spokesperson Ricardo Lagos said “They will be evacuated by the Navy via the ocean. As far as we know there are no injured or dead [among the workers].”

The USGS said the quake was centered west of the town of Calama. It was felt as far away as the Chilean capital, Santiago, and neighboring Peru and Bolivia.

Television images showed cars crushed under the concrete awning of a hotel in Antofagasta, 170 kilometers south of the epicenter.

The police chief of Arequipa, Hernan Tamayo said, “People ran out into the streets because of how prolonged the quake was. There was a lot of alarm but no material or human damage.”

The quake was followed by six aftershocks with magnitudes of up to 5.7. Additionally, the quake triggered a tsunami warning which was later lifted.

In Tocopilla, 115 people were injured. Mayor Luis Moyano said about 1,200 houses had been flattened. “Today, the people of Tocopilla are going to have to sleep in the streets,” he said in a radio address.

In total, 3,000 homes have been destroyed in Chile, according to the Housing Minister. The government has airlifted hundreds of portable homes to provide shelter.

In August, an 8.0 magnitude earthquake struck Peru, killing about 540 people and injuring more than 1,000 others. The southern port city of Pisco was one of the areas devastated by the powerful quake, which lasted two minutes.


This article is based on Powerful Earthquake Strikes Northern Chile by VOA News which has a copyright policy compatible with our CC-BY 2.5. Specifically “Copyright status of work by the U.S. government

Indian Premier Manmohan Singh undergoes heart bypass; Pranab Mukherjee takes charge

Sunday, January 25, 2009

Prime Minister Manmohan Singh received a successful coronary artery bypass surgery and was recuperating well in the state-run All India Institute of Medical Sciences (AIIMS) Sunday.

Dr. Manmohan Singh is the 17th and current Prime Minister of the Republic of India. He also serves as the Union Minister for Finance, succeeding P. Chidambaram.

“The 76-year-old Prime Minister is doing fine now. He is conscious, stable, comfortable and is making rapid progress. He also met his family and congratulated all doctors. [His] ventilator has been taken off and he is breathing on his own. This is an important step,” said Dr. Ramakant Panda, one of the surgeons, after the 11-hour procedure on Saturday.

According to critical care specialist Dr. Vijay D’Silva, who has been entrusted with his post-operative care, Singh has been given a liquid diet since morning including a cup of tea, and was speaking to doctors after the procedure. “The way you [doctors] are taking care of me, you should also take care of other people”, Dr. D’Silva, who received his basic medical training in Nagpur and headed the ICU at Mumbai’s Jaslok and Lilavati Hospitals before he helped set up the ICU at the ultra-modern Asian Heart Institute, quoted Singh as saying.

“We started the operation at 7:45 am. The second operation always takes longer and makes it difficult to reach the heart. We did a total of five by-passes to clear multiple blockages in his arteries. Surgery was the long term answer since there were many blockages. We will take the PM out of the breathing machine in the next 2-3 hours and the PM should stay for three days in the ICU and then 4-5 days more in the hospital,” Drs. Panda and D’Silva explained.

Singh’s personal physician and AIIMS cardiac surgeon, Dr. K. S. Reddy, has predicted the PM will be allowed to attend to some official work in two weeks, to most of the duties in four weeks and will be able to resume office in six weeks. “PM was sent to the Operation Theatre at 6:40 am, surgery was done at 8:45 am and was concluded at 7:30 pm. PM was sent back to the ICU at 8:55 pm,” said Dr. Reddy.

“The team has brought about 20 boxes of special equipment with it. Earlier, Dr. K. S. Reddy had discussions with Dr. Panda in connection with the line of treatment to be followed,” the team of 11 doctors said.

The team of surgeons made a 6 to 7 inch incision along the scar that marked the PM’s 1990 bypass operation, and he was given five grafts. “The new grafts, all 3 mm long, will last the PM the rest of his life,” said Dr. Pradyot Kumar Rath from the Asian Heart Institute. “If the PM could have been so active with all the blockages, he can be even more active now,” Dr Panda said.

Singh underwent a coronary angiography at the AIIMS hospital on Tuesday and Wednesday and was discharged on Thursday. The tests results revealed multiple arterial blockages and Singh returned to hospital on Friday for pre-surgery tests.

External Minister Pranab Kumar Mukherjee, age 73, has been given the charge of Finance Ministry after he held meetings with Congress President Sonia Gandhi and then Prime Minister Singh. Mukherjee said he would meet the Prime Minister because he was going for treatment and when he was abroad, Singh was in hospital. “These are quite natural things. You should not be unnecessarily worried over and coming here in large numbers,” he said.

Mukherjee has also taken charge over some prime ministerial responsibilities, while Singh recovers, officials and media reports said. But no acting prime minister has been named while Singh is recuperating. Mukherjee will also preside over Cabinet meetings and will further handle coal, environment and forests, including information and broadcasting and finance portfolios.

Pranab Kumar Mukherjee, a native of West Bengal, India, is the Minister for External Affairs of India in the Manmohan Singh-led Government of India. A prominent leader of the Indian National Congress in the 14th Lok Sabha, he is known to be a competent party apparatchik, “a prominent Gandhi family loyalist who did not win a popular election until 2004”.

Singh, a diabetic, underwent a bypass surgery in Britain in 1990 and had an angioplasty in 2004 in Delhi in which stents were introduced in his arteries. He had earlier been operated for a benign enlarged prostate in 2007, and for nerve compression in both wrists in 2006 and cataract removal procedure last year, officials said.

The Congress Party, which leads the coalition Government, has said that he will remain Prime Minister if Congress and its allies win again. But Congress is reportedly planning to replace him, possibly within two years, with Rahul Gandhi, the 38-year-old son of Sonia Gandhi, the Italian-born Congress leader. “Days are not far off for Rahul Gandhi to become Indian Prime Minister,” Mr Mukherjee said earlier this month.

Rahul is an Indian politician and member of the Parliament of India, representing the Amethi constituency. He is a member of the Nehru-Gandhi family, the most prominent political family in India. He is the son of current Italian-born Congress President Sonia Gandhi, and former Prime Minister Rajiv Gandhi, who was assassinated in 1991. Gandhi was 14 years old when his grandmother, Prime Minister Indira Gandhi, was assassinated by her security guards. His great-grandfather, Jawaharlal Nehru, was the first Prime Minister of India, and his great-great-grandfather Motilal Nehru was a distinguished leader of the Indian independence movement.

Reasons Your Car’s Engine May Be Misfiring

By Lawrence Reaves

When one or more of the cylinders in your engine misfires, you’ll notice a hard idle, hard start, or hesitation during acceleration. In some cases, you’ll experience all three. While idling, your engine might shudder so violently that it shakes your entire steering column. While driving, you’ll notice a marked lag in performance. These problems will be more pronounced if you turn on your A/C or use any other accessories that add to the load placed upon your engine. The question is, what causes a misfire in the first place?

There are three primary reasons for a misfiring cylinder: insufficient spark, compression, or fuel. The challenge is to determine which factor is to blame.

Insufficient Spark For Ignition

Your engine undergoes a 4-stroke combustion process that results in the energy needed to turn your car’s crankshaft. Air and fuel travel into each cylinder. The intake and exhaust valves close, sealing the combustion chamber. A piston lies at the bottom, and begins to rise, compressing the air-fuel mixture. When the piston reaches the topmost point of its path, a spark plug ignites the mixture and causes a miniature explosion. Vapors expand within the chamber and push the piston downward. This rotates the crankshaft and powers your vehicle.

[youtube]http://www.youtube.com/watch?v=n-sgVVTE9Io[/youtube]

Note that the process described above requires the spark plug to ignite the compressed air-fuel blend. If this spark is unavailable, or too weak, the mixture cannot be ignited. This causes a misfire.

Insufficient spark can be traced to several possible root causes. For example, the plug may be worn, corroded, or damaged; the plug wire may also be worn, preventing voltage from reaching the spark plug; or the distributor cap may have become cracked or otherwise damaged. Each of these factors will prevent voltage from being delivered to the combustion chamber.

If you intend to fix the problem without the help of a mechanic, you’ll first need to identify which cylinder is misfiring. You can accomplish this by letting your car idle and unhooking the plug wires, one at a time. You’ll notice a change in the idle speed after disengaging each good cylinder. When you unhook a plug wire and notice no change, you’ll have found the misfiring cylinder. Check the plug and the plug wire. You’ll need an ohmmeter to check the plug wire’s resistance.

Compression Leaks In The Engine

Recall that during the 4-stroke combustion process, the air-fuel mixture is compressed by the rising piston. In order for this to occur properly, there should be very little compression leakage from the chamber (a small amount of leakage is normal). If a sizable leak has developed, the air-fuel mix cannot be sufficiently compressed for the ignition stroke.

Once you have identified the misfiring cylinder, perform a compression test (a manual tester costs less than $30 at most auto supply shops). If you discover a leak, the cause will likely be due to a bad exhaust valve. You’ll likely need to have the guide seals replaced. As a side note, if you detect a leak in two neighboring cylinders, the culprit is probably a failing head gasket.

Malfunctioning Fuel Injectors

If you have checked the spark plug, plug wire, distributor cap, and compression, and have been unable to find a problem, the misfire is likely due to insufficient fuel. The best place to begin troubleshooting is with your fuel injection system – specifically, the injector for the misfiring cylinder. Assuming enough fuel is reaching the injector, the most common issue is a blockage in the nozzle. Such blockages are often caused by deposits left behind when you turn off your engine.

Once you have ruled out ignition and compression as possible causes of the misfire, it’s best to have an experienced mechanic check the fuel system. If you can identify a clog in the injector, replace the unit. Otherwise, insufficient fuel could be caused by a failing oxygen sensor, malfunctioning powertrain control module (PCM), or a bad fuel pump. Your mechanic will have the necessary equipment for diagnosing which factor is causing the problem.

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