Question about 2000 Hyundai Elantra

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Lack of power

Car lacks power changed catalytic coverter and fuel filter has no codes car is 2000 hyundai elantra

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If the catalytic converter disintegrated before you replaced it, the muffler may have been clogged by chunks of ceramic falling from the cat and migrating back to the muffler.
Try this: drive the car warm, then stop and with a helper to gradually raise the RPMs while standing, listen at the tailpipe. If you clearly hear the individual firing of the engine then the system is probably clear. If you notice that the sound is more of a hiss, then either the muffler or (if it has one) the resonator are clogged.
On a car with a heavy-gauge stainless exhaust system, two shots from a .357 magnum into the tailpipe opened it up again (forever) and didn't really make much difference in the loudness of the exhaust. I wouldn't recommend doing that with most exhaust systems though.  
    

Posted on Jan 07, 2009

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