Why are my plugs fouling? - Page 2 - Chevy Impala SS Forum
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post #11 of 29 (permalink) Old 10-27-2009, 03:09 PM
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plug wires, opti or coil may be needing replacement, a weak spark can cause plugs to foul excessively.

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post #12 of 29 (permalink) Old 10-27-2009, 03:38 PM Thread Starter
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Wires are brand new. But any recommendations on the other 2 parts? I don't mind spending money on my car. I love the car I just want it to run right.
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post #13 of 29 (permalink) Old 10-27-2009, 06:19 PM
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The coil is cheap, the opti is expensive...take your pick.

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post #14 of 29 (permalink) Old 10-27-2009, 06:26 PM Thread Starter
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What's expensive? I don't use the term expensive with this car until you get into the $500 and up range....
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post #15 of 29 (permalink) Old 10-27-2009, 07:39 PM
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Doing an Opti is a $400 job just in parts if you do it right. At least $260 for the Opti itself EBay - thepartsladi), $30 for the timing cover seal kit, $100 for a new water pump (it has to come off, so if its old, replace it) and $40 in antifreeze, plus $5 to make the tool to instal the oil seal out of a highlighter.

Start by doing diagnostics. Black fouled plugs are a sign of running rich. How old are your O2 sensors and is your check engine light on?

2005 Pontiac GTO
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post #16 of 29 (permalink) Old 10-28-2009, 09:14 AM Thread Starter
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It's a 94' and I'm pretty sure none of that has been replaced so I don't mind doing it....
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post #17 of 29 (permalink) Old 10-28-2009, 09:51 AM
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Quote:
Originally Posted by bolivia_ss View Post
Naw, they were black as hell...
OK.. are they all black..?

Getting oil?
Cracked rings or leaky Valve Guides will have oil residue.

Fuel Regulator - Put a guage on it, should be 40psi range.

Make sure the Coil Wire is clean

Check under hood Fuse Box

D
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post #18 of 29 (permalink) Old 10-28-2009, 09:55 AM
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check the wires that go to the coil, not the plug wire but the other two. Wiggle them and make sure the wires are not loose. If you wiggle them and the car shuts off replace them. I was having issues with fouled plugs and car shut off and this was my issue.

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post #19 of 29 (permalink) Old 10-29-2009, 10:10 AM Thread Starter
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How do I tell if I'm running rich? So is there any chance that there's something else wrong besides around the plugs, wires, or what not? Like I said I'm going to get it fixed WHATEVER it is. I don't care what it is. Just gotta find what it is first.
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post #20 of 29 (permalink) Old 10-29-2009, 04:49 PM
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You're probably going to need a laptop and cable to do some datalogging and see if anything looks wrong.

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