A popping sound coming from one side of my exhaust?

1995 CHEVROLET CAPRICE

130,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC

CJLOVELESS

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I have the carl listed above Classic and it has a popping sound when idling coming from 1 side of my exhaust when I got to accelerate it the popping sound gets worse, and it don't get up n go it hesitates and barely goes. I've changed the plugs, the throttle position sensor, checked the fuel pressure, checked my fuel injectors, and took the catalytic converters off because I thought news might if movie clogged up and it's still doing the scary thing. I'm stumped.

Sep 2, 2023 at 9:48 AM

JACOBANDNICKOLAS

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Hi,

That sounds like you may have an exhaust valve (burnt valve) that is failing. Have you checked engine compression? If you haven't, that is where I would start to see if there is a weak cylinder or cylinders on one side of the engine.

Here is a link that explains how to test:

https://www.2carpros.com/articles/how-to-test-engine-compression

You will need a compression gauge to do this. If you don't have one, most parts stores will lend one to you.

Also, take a look through this link, you may find it helpful:

https://www.2carpros.com/articles/engine-backfires-while-running

Try this and let me know the results.

Take care,

Joe

May 16, 2024 at 7:19 PM