Location/remove/replacement

2006 CHEVROLET IMPALA
208,000 MILES • 3.5L • V6 • 2WD • AUTOMATIC
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LCA
  • MEMBER
  • 1 POST
Engine losing power, exhaust smoke, knocking sound from engine, losing power, hard to start.
Feb 25, 2020 at 6:57 PM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

That sounds like a lot of different issues. What color is the exhaust smoke?

Take a look through these links and see if they help. Also, let me know about the smoke and if the exhaust could have a converter plugging.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Let me know.

Joe
Mar 12, 2021 at 9:36 AM
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SCGRANTURISMO
  • CAR REPAIR CONTRIBUTOR
  • 4,897 POSTS
Hello,

This sounds like you have at the very least a blown head gasket, possibly other internal damage like worn bearings or a damaged crankshaft. Here are a couple of links below to test if you have a blown head gasket:

https://www.2carpros.com/articles/head-gasket-blown-test

Please go through these guides and report back with what you find out.

Thanks,
Alex
2CarPros
Mar 12, 2021 at 9:36 AM
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