Low compression

1999 HONDA CIVIC
144,000 MILES • 1.6L • 4 CYL • 2WD • AUTOMATIC
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JSSANCHEZ2031
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  • 2 POSTS
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
Dec 19, 2018 at 10:10 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
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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Dec 19, 2018 at 11:15 PM
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JSSANCHEZ2031
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Thank you. I will do that and reported back. Thanks again.
Dec 20, 2018 at 12:59 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
You are welcome.

we are always glad to help.

Roy
Dec 20, 2018 at 2:45 AM
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