Posted by jimg.allentown on August 20, 2018 at 10:35:49 from (108.16.40.107):
In Reply to: point/condenser posted by rgriffith99 on August 20, 2018 at 09:00:52:
If you have a miss, it is something that is affecting only the cylinder that is not firing. Points generally affect ALL cylinders - not just one. Start by making a quicky compression check. Pull the coil wire and crank the engine. Do you hear each cylinder come up on compression? Does it crank evenly? Or does it sound like it goes a bit faster past one cylinder? If so, you could have a compression loss. Compression loss can be caused by several things. A burned valve. A valve out of adjustment. A valve sticking and not fully closing. A bent pushrod. A blown head gasket. If compression seems even, you can use an insulated tool to pull one plug wire off at a time to see if it changes RPM or smoothness. The one that does not seem to change anything is probably the one that is not firing. Check to see if there is spark at that cylinder. If you do have a loss of compression, it is highly likely that you will have to remove the head to pinpoint the problem as well as to repair it.
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