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Low compression

Tiny
JSSANCHEZ2031
  • MEMBER
  • 1999 HONDA CIVIC
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 144,000 MILES
Cranks but not start. Has good spark and fuel delivery. Compression test showed low: 50 -75 - 50 -75. That's on cylinder 1, 2, 3 and 4. What could have caused that? Can a timing issue can caused that compression? Odd to me why 1 and 3 has same compression and 2 and 4 has same. Thanks
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Wednesday, December 19th, 2018 AT 10:10 PM

3 Replies

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

Low compression like this is usually the result of a failed timing belt.

https://www.2carpros.com/articles/how-a-timing-belt-works

remove the top cover and check the timing marks with the engine at top dead center.

I attached a picture of how the marks should line up.

Roy
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Wednesday, December 19th, 2018 AT 11:15 PM
Tiny
JSSANCHEZ2031
  • MEMBER
  • 2 POSTS
Thank you. I will do that and reported back. Thanks again.
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Thursday, December 20th, 2018 AT 12:59 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

We are always glad to help.

Roy
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Thursday, December 20th, 2018 AT 2:45 AM

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