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Low compression in one cylinder

Tiny
WILLIAM GIERCZAK
  • MEMBER
  • 2010 DODGE CALIBER
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 188,000 MILES
Cylinders 1, 2, and 3 have 170 lbs. Of compression, number 4 only 20. Is it repairable?
Monday, February 18th, 2019 AT 5:39 AM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

Sure it is but it all depends on why it is low.

It could be:

1. Burned valves. This would be a valve job on the cylinder head.

2. Piston rings. This involve an overhaul of the motor.

3. Burned hole in a piston. This would also mean a overhaul.

Roy
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Monday, February 18th, 2019 AT 10:32 AM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

Yes it is repairable. I have included a link for you below to help determine the cause of low compression in that cylinder. Go through it and get back to us with what you find out.

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

Thanks,
Alex
2CarPros
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Monday, February 18th, 2019 AT 10:35 AM

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