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Questions and Answers | Return to The CJ2A Home Page Re: Bigger problems

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Posted by Denny on January 06, 2003 at 23:20:44:

In Reply to: Posted by on January 06, 2003 at 08:56:16:

: how low?, don't remember, but compression should be over 100psi, you can have a varience of 10psi between cylinders and it will run ok.

: One more thing, excluding the compression problem, I can't tell you how many times I have seen the same simtoms you describe and the problem ended up being a bad coil. When the engine was started after sitting for a while it would run fine but as soon as the coil heated up it would run like garbage. Seen this in cars, lawnmowers, snowmobiles etc...

First cyclinder was around 60 psi, second was alittle more than 30, 3rd one was below 30, the fourth was around 50. My dad said that his gauage might not be totally accurate in that its old and has not been used in awhile. But it gave us enough of a reading to determine that the middle cyclinders compression is way low.

A friend of mine suggested the head gasket could be a problem, since the two middle cyclinders are the ones that are really low. Possibly??

How could we test the coil to see if its working?

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Re: Bigger problems Sam 07:42:40 1/07/03 (0)

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: : : how low?, don't remember, but compression should be over 100psi, you can have a varience of 10psi between cylinders and it will run ok. : : One more thing, excluding the compression problem, I can't tell you how many times I have seen the same simtoms you describe and the problem ended up being a bad coil. When the engine was started after sitting for a while it would run fine but as soon as the coil heated up it would run like garbage. Seen this in cars, lawnmowers, snowmobiles etc... : : First cyclinder was around 60 psi, second was alittle more than 30, 3rd one was below 30, the fourth was around 50. My dad said that his gauage might not be totally accurate in that its old and has not been used in awhile. But it gave us enough of a reading to determine that the middle cyclinders compression is way low. : A friend of mine suggested the head gasket could be a problem, since the two middle cyclinders are the ones that are really low. Possibly?? : How could we test the coil to see if its working?

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