No power, exhaust backfire

1994 CHEVROLET CHEYENNE
155,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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ZACH88
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  • 1 POST
Pulling out of an intersection my truck backfires through the exhaust and acts like it wants to stall for a minute and then takes off, but it has very very poor power. If I hold the brake and the gas all the way all it does is backfire a lot and wants to shut off. The exhaust smells bad too, not like a gas smell. It is just very strong smelling and usually is more white than it should be in my opinion. I know the head gasket is good so I am at a loss here.
Sep 11, 2018 at 9:58 AM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi and thanks for using 2CarPros.com.

Based on your description, it sounds like the catalytic converter may be plugged. Take a look through this link and let me know if it is helpful.

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

Let me know.

Joe
Sep 11, 2018 at 7:15 PM