Question about 1986 Ford F 250

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My 1986 F 350 with a 350 4 barrel carb back fires

My 1986 F 350 with a 351 4 barrel carb back fires at idle. It starts and runs good and just passed smog but it back fires out the exhaust when sitting at a red light and the problem is getting worse.

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Check the vacume lines keep me posted

Posted on Sep 13, 2009

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