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Thread: Black soot inside exhaust pipe
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04-06-2006 #1
New to Pro-Touring
- Join Date
- Nov 2005
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Black soot inside exhaust pipe
I installed a new ZZ383 with 750 Holley in my 69 Camaro. I have noticed some black soot deposits inside the exhaust pipe tips. Does black soot indicated I am running to rich or is my timing off a little. Time advance is 31 degree. Car runs good but I have noticed the soot build up.
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