Backfiring when accelerating, shaking and losing power

2006 CHEVROLET COBALT
149,000 MILES • 2.0L • 4 CYL • 2WD • MANUAL
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ALICIAHOLTZER
  • MEMBER
  • 1 POST
The car has a tick to the engine that started about 2 weeks ago. last night, it started backfiring with acceleration, shaking and losing power. i can smell exhaust and cant get the car up to speed to get into fifth gear.
Nov 23, 2019 at 8:33 PM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
More than likely you have a valve issue. I would run a compression check to start and then a cylinder leakage to see where you are loosing the compression assuming it is low. However, this sound like a broken valve spring.

Let me know what the compression readings are and we can go from there. Thanks

https://www.2carpros.com/articles/how-to-test-engine-compression
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Nov 24, 2019 at 8:44 AM
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