Misfire

Hi,

The interesting thing about low compression in one cylinder is that it can cause a misfire at different times. It's just a theory at this point, but it is very possibly the cause.

Let me know what you find or if I can help in any way.

Take care,

Joe

Hi,

That is enough difference to cause the problem. What to do is perform a wet test. Place about a tablespoon of motor oil in the affected cylinder and recheck it. If the compression jumps up near the others, then you have an issue with rings. If there is no change, it is likely related to one of the valves or even a head gasket.

Try the wet test and let me know the results. Also, based on the manual, they are all low. Take a look at the specs below. Also, more than 15psi difference is a problem.

Let me know what you find or if you have other questions.

Take care,

Joe

See pic below.

If we can get them all to 150, it should run good enough to eliminate the misfire and be drivable.

Let me know,

Joe

Hi,

Anything is possible. I've never used the product, but I have heard it has helped others. What I am surprised about is what they indicate minimum compression to be. I feel that is high.

Joe

Hi,

First, the product you mentioned is what I'm referring to. I never used it. Also, what the manual indicates as minimum compression seems high to me. I thought it would have been lower.

Joe

You are very welcome. If you have a chance, let me know how things turn out for you. I'm interested in knowing.

Take good care of yourself.

Joe