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Why does a car slow down sputter then backfire on acceleration?

Answer

This is a very broad question, but I will say this it is more than likely bad fire (spark) or bad fuel (not enough, too much, poor quality). Spark could be any thing from sparkplug all the way back up to the distributor or timing. Fuel could be water or rust in the fuel, clogged injector/injector's. probably NOT fuel pump or filter.

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First answer by ID1095954266. Last edit by ID1095954266. Question popularity: 17 [recommend question].

Answers.com > Wiki Answers > Categories > Cars and Vehicles > Auto Parts and Repairs > Fuel and Engines > Why does a car slow down sputter then backfire on acceleration?

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