1984 Pontiac Bonneville

Mailbag: Reading Smoke Signals

Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re helping a reader find the source of mysterious white smoke.   J.M. • Cola, SC Q: I have a 1984 Pontiac Bonneville with a Chevy 350. White smoke has been coming out of the left exhaust pipe and

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