White residue on spark plugs
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White residue on spark plugs
What would cause white residue on my spark plugs? Im running very rich and have alot of carbon build up on the plugs as well, sometimes i will see a little bit of white as well. I heard its because of detonation, but my compression is perfect (just tested, about 118,118,118 front and 115,115,115 rear) Never heard detonation before.. running free flow exhaust and ~8 psi boost on s5 turbo with no FCD.
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Lean, but not detonating? My car smells of fuel really heavily... but i guess that doesnt mean i am leaning outat higher RPM's. Besides getting a SAFC, is there any way to tell/ adjust?
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RE WannaBE
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most likely, glazing or a lean condition. Glazing due to intense heat and fuel on a new plug..attracting all of that fuel etc onto a new plug, IE..hot rodding a car with new plugs in it..
Dave.
Dave.
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rgordon1979
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03-15-22 12:04 PM