Started running rough, engine misses

Tiny
WILLIAM NOTTURNO
  • MEMBER
  • 2006 JEEP CHEROKEE
  • 3.7L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 81,000 MILES
Started running badly. While installing new plugs, which were way overdo, I found the old plugs worn to the point that the gap was.070+, except the number four. It still looks fairly new but was wet with gas. After installing new plugs it still has a miss and I smell gas (no leak found).
Friday, July 21st, 2017 AT 12:09 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 44,297 POSTS
Hello,

On the number four plug lets remove the spark plug and do a compression test.

Here is a guide to help you get the job done. If you do not have a gauge the auto parts store will rent it to you for free.

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

and

https://www.2carpros.com/articles/engine-vibration-at-idle

Please run some tests and get back to us we are interested to see what it is.

Cheers, Ken
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Saturday, July 22nd, 2017 AT 12:31 PM

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