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Black Soot on plugs and end of tailpipe
I have noticed i been getting alot of black soot on the plugs and out of the exhaust onto the car bottom. Car runs real good...Stock class 355 chevy motor, 4 valve relief flattop, 450 /450 cam, Stock Willys 4412 "lil 500" with wooden slider adaptor on top of '69 cast iron Quadrajet intake...last time i changed plugs i went to a hotter plug with the idea it would burn more fuel in the combustion chamber with the hotter spark plug and not soot up.
Last edited by 3dinterceptor; 03-31-2014 at 11:59 AM.
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If you have black soot on your plugs and in your exhaust you are too rich take some jet out or maybe your float is to high.
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