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No compression in cylinder 2 mk 4 golf gti

Car is running but then it splurters when driving checked leads etc and then cylinder no 2 shows low compression so where or what is the problem

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  • Cars & Trucks Master
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If you are sure the compression is low on that one cylinder (might want to get a second opinion) the most likely problem is a burnt valve.
That will require taking the head off and having it "rebuilt". $$$
Second most common problem is something wrong with your piston rings. That wil require an engine overhaul. $$$$$$
Here's how to tell before you tear the engine down.
With your compression gauge handy, get an oli can with some motor oil ready. You'll need about 1.8 cup or six tablespoons full.
Check the compression without the oil, write it down.
Add or squirt the oil in the cylinder, and check the compression again.
If the compression comes up with the oil added, the problem is the rings on the piston. If the compression stays the same, it is a burnt valve.
There is a small chance it could be a leaking head gasket.

Posted on Jan 19, 2013

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