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Q: sounds stopped up

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When I press gas it doesn't. Want to go and and exhaust rattles severe under passenger side rpm doesn't raise smell sulphur also put. 5 gallon. Gas and gas light came on less than5 mules later

My car has 133000 miles.
My car has an automatic transmission.

A: It sounds like your catalyst is broken up a...

It sounds like your catalyst is broken up and clogged the exhaust. You may also have a problem with the engine flooding from fuel which could be caused by a bad fuel pressure regulator.

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