Re: CD-11’s compression issue

Home Forum Ask A Member CD-11’s compression issue Re: CD-11’s compression issue


skanders01


Replies: 39
Topics: 38
#51738

Thanks for the questions, fleetwin. Yes it is possible that there may be something wrong somewhere between the cylinder head threads and the compression gage. I am going to borrow a different one from Auto Zone tomorrow.

The ball hones didn’t spend more than the recommended time in the cylinders. Doubt that is at issue.
I did take my red and gray corded drill to the motors to spin them faster. The 40 HP Johnson came up to 82 PSI in each cylinder. The pressure in the little green one currently on the autopsy table didn’t change, HOWEVER, by spinning it faster with the bigger drill, I was able to get it to start and run after playing around with settings. Doesn’t want to idle down, but will run without too much trouble from "shift" position speed through full speed. A lot of smoke though. I think I ensured there was at least a 16:1 for initial starting.

Will report results with another compression tester tomorrow.

The one motor I did not touch the internals does start/run OK, but as mentioned before, it too read around 30 PSI.

I sure hope the problem is the compression tester for my sake, but for the effort of all you supportive troubleshooters out there, I hope it is not so your time and efforts were not wasted.

Kyle Anderson
Trempeleau, WI
skanders@triwest.net
920-764-0501