Home › Forum › Ask A Member › CD-11’s compression issue › Re: CD-11’s compression issue
The CD 10-12 models have the small starter on them and are harder to rope over than the later models equipped with the larger elliptical starter so they may not be getting up to the needed speed to get a good reading. New rings in a used bore will take a lot longer time if ever to fully seat in than new rings in a new bore so the motor should be run for at least ten hours break in time before accepting the compression numbers. I don’t think they would run well or even fire much below 60 lbs.
Why not try grounding the spark plug wires and spinning the motors over with a drill to see if the numbers come up? No, it wont hurt the motor for the short time needed as only one cylinder will be doing any compression.