Low compression

Tiny
ANWARPHILL77
  • MEMBER
  • 2003 OPEL CORSA
  • 1.4L
  • 4 CYL
  • 2WD
  • MANUAL
  • 130 MILES
My car has low compression in number three cylinder. Compression reads 600 due to that my car is misfiring on that cylinder. Is there a quick fix? There is no valve leakage.
Thursday, June 7th, 2018 AT 10:56 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi and thanks for using 2CarPros.com.

Unfortunately, there is no quick fix for low compression. Very few things cause it, valves, worn rings, timing, head gasket.

Here is a link which discusses specific reasons for compression issues:

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

Basically, you need to determine where the fault lies. Here are directions for a compression test:

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

I wish I had an easier solution, but you need to find the problem and then fix it.

Let me know if you have other questions.

Take care,
Joe
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Friday, June 8th, 2018 AT 7:30 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,465 POSTS
600 or 60? Or which measurement unit are you using? If you meant 60 PSI then that is very low and you would need to determine why it is that low. If you are sure the valves are good then it would either be cylinder scoring or broken/damaged piston rings to drop it that low.
There are a couple solutions but neither are quick. One would be to remove the engine, have the bad cylinder bored out and a sleeve installed along with a new piston and rings for all cylinders. Then put it back together with a new timing set and whatever else is worn like bearings and having the head checked and valves done. That would essentially give you a new engine. Or put a low mileage used engine into it for possibly less money depending on what the engine machine work would cost in your area.
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Friday, June 8th, 2018 AT 7:38 PM

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