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Farmall & IHC Tractors Discussion Board

Re: Help! M does not run smooth


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Posted by Jim Stordahl on June 14, 2014 at 08:51:01 from (66.219.8.179):

In Reply to: Re: Help! M does not run smooth posted by Jim Stordahl on June 14, 2014 at 07:09:27:

Diagnostic update:

No antifreeze in oil.

I put oil in each cylinder and rechecked compression. Compression increased from 80’s to about 90. Is that meaningful? What should compression be?

I reset spark gap to .40, seems to idle better….

When I had it idling, I tried the propane test around the intake manifold – every nook and cranny. I directed the raw gas around all surfaces, including carb gasket and all around the head gasket. There was no change in idle speed. If there was an increase, it was so subtle I could not hear it. Should it be obvious? Then I tried starting fluid, same procedure. When I woke up on the ground, it was still idling. Okay, the ether did not render me unconscious -- I’m kidding! Again, no discernable idle speed increase with starting fluid sprayed on those surfaces. I did not, however, try either of those combustibles on the head, should I do that too?

Jim


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