Question about 1993 Cadillac DeVille

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Engine backfires car backfires and looses power

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Take it to a shop that can check the trouble codes but most likely the computer or a sensor for TPS or Mass Air flow.

Posted on Mar 31, 2014

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back first to tail pipe end, not air cleaner, right.

back fire to tail
is caused by 2 reaons.
engine runs rich as a pig, and air leaks to the exhuaust.
fuel + air and flame + bam.

sounds to me you lost cam timing
i cant help you more , as you never stated what engine is in the car.
called ENGINE OPTIONS< day 1.

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Mrs Tercia,have you checked whether you might have either blocked exhaust system or Broken and blocked Catalytic converter? What I mentioned are the main cause of loosing power,backfiring and make the car not drive able and possible blow either the engine or catch fire.

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How's the inside of the cap and rotor ? It could be cross-firing inside the cap.
You could also have a major vac leak somewhere and the engine is starving for fuel.

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-Air filter could be clogged. Or fuel contaminate water.

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Engine looses power going up hill, no check engine light at this time.


How old is the Catalytic Converter, sometimes they will get clogged up and affect performance.
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