Engine misfire

Tiny
BENJAMIN E. BIGLEY
  • MEMBER
  • 2002 JEEP LIBERTY
  • 3.7L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 215,000 MILES
I have replaced the coil pack, cam sensor, crank sensor, heads, injectors and the engine still has a mis.
Saturday, August 26th, 2017 AT 9:09 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,323 POSTS
Here is a good way to see which cylinder is acting up.

https://youtu.be/QTE8k06MzwQ

Also I would do a compression test to see if any are low. If you don't have a gauge you can rent one form the auto parts store for free. When you had the plugs out do any look different from the rest color wise?

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

and

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

Let me know what happens.

Cheers, Ken
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Monday, August 28th, 2017 AT 5:30 PM

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