Will fouled plugs cause Code 43?
10-29-2012, 02:37 PM
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Car: 1991 Z28
Engine: 5.7 TPI
Transmission: 700R4
Will fouled plugs cause Code 43?
I have leaking valve seals- 194,000 miles on the engine and plugs 6 and 8 are getting fouled. I have a code 43 showing that won't clear- are the fouling plugs causing the code, or do you think I have bigger issues?
10-30-2012, 12:37 PM
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Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: Will fouled plugs cause Code 43?
shouldn't cause any codes unless you are leaking oil onto the knock sensor connector or wire and it is getting inside. Do you have a valve cover gasket leak? Ever try spark plug anti foulers?
10-30-2012, 09:39 PM
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Car: 1991 Z28
Engine: 5.7 TPI
Transmission: 700R4
Re: Will fouled plugs cause Code 43?
Fixed it! Jacked the car up and found the knock sensor wire hanging free with a broken connector. New pigtail, connected to sensor, cleared code, running like new! And yes, the #6 and 8 plugs are still oiling... Seals are next!
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