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By zrd32 - 9 Years Ago
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I have a 312 4 cylinders are running good but the other 4 cylinders have a carbon build-up on spark plugs. Where do i began to start?
Thanks-Zach
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By charliemccraney - 9 Years Ago
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Which 4 have the carbon buildup?
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By zrd32 - 9 Years Ago
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6,8,1.3
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By charliemccraney - 9 Years Ago
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Those are pretty random. A tune up and compression check is probably a good place to start.
The only hint of a pattern I see is 8, 6, and 3 fire sequentially, but 1 is an outlier. The 3 in sequence, maybe some sort of ignition issue.
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