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that Really sounds like the catylyst in your catalic converter is pretty much shot...gone.. which could cause your car to catch on fire. if the catylyst is just ruined it'll break down and shoot itself into the muffler, get really hot, and eventually catch fire.

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Q: What is the problem when my engine knocks and then when i step on the gas it makes a poppin sound and almost stales on a 1990 Chevy corsica?
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