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Discussion Starter · #1 · (Edited)
My friend 95 impala ss looses power when he press the gas pedal then as the car revs higher it smoothes out i cleaned the throttle body which was never cleaned gunk'ed up with carbon now it idles a whole lot better but still looses power at low rpm's and sometimes backfire, he also just installed a pype's cat back with a x pipe sounds like he has an exhaust leak too. But the car is stock so could it be the tune-up, fuel, the exhaust leak, x pipe, any help will be greatly appreciated and one more thing the starter keeps breaking on him after a while...........
 

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Sounds like an bad opti, plug wire or plug. Start with the easiest and cheapest and work your way down. Wires can be tested with an OHM meter. If you get new wires make sure they are properly seated, after replacing all of the above I had problems getting it started because of wires not "popping" on.
 
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