Question about 1998 GMC Sierra

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Exhaust getting red hot

I have a 1988 toyota celica all trac turbo and the exhaust maniflod is getting red hot. I have checked the spark plugs and it looks like all the cylinders are running a little rich. Not excessively( they were not wet with gas when I took them out). It has a new knock sensor, fuel pressure regulator, 02 sensor and spark plugs and wires. I have also checked the exhaust and the cats have actually been gutted so if anything it should have better flow. Anyways the next thing i'm going to check is the timing. Is this a good idea? And does anyone know of anything else I can try? Thanks

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Timing to far advances. It's getting ignition before the valves are closing.

Posted on Jan 11, 2009

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