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Old 07-07-2009, 07:33 PM   #1
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Default distorted glow plug

what does that look like. I put almost 2 galons on my latest plug and at the track it starting backfiring and dieing out at medium to full throtle. I took my glow plug out, and it's really grey not quite white and it's thicker then normal. My question is, is this a distorted glow plug? I read that a distorted or broken wire is a major danger zone, to lean, possible engine damage. But my engine never went over 230. So what is a distorted plug? If anything i would say it's coroded. and yes it's looks pretty coroded and fat. Could this just be the oddonnel fuel that has stained everything it touches?

hope i didn't hurt my engine.
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Old 07-07-2009, 08:01 PM   #2
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Grab a new plug just like it and compare the elements inside the plug. If the used one's element has moved compared to a new one, then that's a distorted plug. Your engine was probably lean if it was backfiring and it might need a head shim to lower the compression a little.
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Old 07-07-2009, 08:24 PM   #3
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Quote:
Originally Posted by SkarTisu View Post
Grab a new plug just like it and compare the elements inside the plug. If the used one's element has moved compared to a new one, then that's a distorted plug. Your engine was probably lean if it was backfiring and it might need a head shim to lower the compression a little.
no same place but really really grey. Yeah new plug richer settings. thanx good night.
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Old 07-07-2009, 09:38 PM   #4
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You're running a V-spec right?
No shimming needed if this is the case. Richen her up an hour and get back to running. 2 gallons is a lot on a plug though. I change my plugs at one gallon to make sure that the plug doesn't cost me a race, and I don't loose any performance.
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