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Misfire/rough running?

Tiny
JSTRASSBURG89
  • MEMBER
  • 2000 CHEVROLET S-10
  • 2.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 212,176 MILES
The truck was running pretty rough. I took it to a mechanic, and the guy said it was skipping. He replaced the spark plugs, wires, and coil packs. The plugs were terrible. I got the truck back, it does run better, but still running really rough. Especially at low RPMs and under load. I heard that I should check vacuum lines, but I only know the basics of keeping a car running. Oil, brakes, tires, starters. Anything else and I'm kind of in the dark.
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Monday, September 11th, 2023 AT 9:12 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
It sounds like you have low compression in one or more for the cylinders.

Here is a guide to help you and confirm the issue:

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

Please go over this guide and get back to us.
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Tuesday, September 12th, 2023 AT 10:23 AM

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