misfire cylinder four

2008 CHEVROLET TAHOE
190 MILES • 5.3L • V8
Avatar
SHERMAN SIMMONS
  • MEMBER
  • 1 POST
25 psi in cylinder, engine running rough and gas smell.
Oct 2, 2020 at 5:51 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good afternoon,

This reading indicates you may have either burned valves or bad rings.

https://www.2carpros.com/articles/the-reasons-for-low-compression

https://www.2carpros.com/articles/replace-engine-piston-rings

The heads will have to removed to determine the failure.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Roy
Oct 2, 2020 at 9:36 AM
Advertisement