LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Is this plug fouled?

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Old 05-29-2008, 04:46 PM
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Default Is this plug fouled?

Still trying to figure out why my car will stumble at low rpms and wont roast the tires in first gear, so while i was doing the plug wires i pulled out one of the plugs and it looks like this.

Is this fouled? There is a greyish buildup on the top and the base of the plug is all black. i have also heard bad things about Bosch plugs in lt1s. could this be the problem? Thanks guys
Old 05-29-2008, 05:06 PM
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That plug is very black. The plug is fouled many reasons for it to stumble off idle, vaccuum leak, exhaust leak, o2's, plugs, plug wires, coil, cap, rotor, tune, etc, etc

I was given a set of those plugs and I thought they were WAY to expensive.

The ONLY plugs I use are TR55 or autolite 106 and that is from NA to 15 psi boost...Who tuned your car btw?
Old 05-29-2008, 09:58 PM
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Originally Posted by BattleShip
That plug is very black. The plug is fouled many reasons for it to stumble off idle, vaccuum leak, exhaust leak, o2's, plugs, plug wires, coil, cap, rotor, tune, etc, etc

I was given a set of those plugs and I thought they were WAY to expensive.

The ONLY plugs I use are TR55 or autolite 106 and that is from NA to 15 psi boost...Who tuned your car btw?
no tune yet
Old 05-29-2008, 11:04 PM
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Check all that I mentioned. Get datamaster is the best investment. It requires a cable then you can collect 20 files.

Try it you will easilly find this problem with it.
Old 05-29-2008, 11:07 PM
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What kind of plug is it?
Old 05-29-2008, 11:10 PM
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its a shitty bosch platinum +2 or something like that, the plugs are junk get yourself some AcDelcos, Autolites, NGK's, or just pretty much anything besides bosch plugs, you'll be thanking yourself later
Old 05-30-2008, 08:16 AM
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Well the plug DOES look black, but on the flip side that's a crappy pic :\ Use "macro" (flower pic sometimes) mode on your camera.

Right now, I'd say a little rich.
Old 05-30-2008, 03:07 PM
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just installed my tr55s but i cross-threaded the #2 cylider so now i need to work that out.
Old 05-30-2008, 03:17 PM
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Ouch

Proceed slowly...it is bad, but don't panick and make it worse.



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