Posted by Wilamayb on May 14, 2011 at 10:09:34 from (71.15.151.11):
I'm working on an M for a friend that said he was sick of looking at it. Since he was so disgusted with it not running he pushed it outside the barn about 2 years ago where it endured the elements during that time.
His problem was that it would sputter anytime the throttle was opened up or it was under load. I found that problem. It was mud dobber nests in the air cleaner.
The tractor had all the issues of sitting outside for 2 years....
I had the carburetor cleaned and regasketed by Popin John in Kerhonkson, NY who has always done EXCELLENT work on my Deere magnetos and carburetors so I trust that it is done correctly. He also rebushed the distributor and tested it afterwards.
It has electronic ignition and produces a very very hot spark all the way to the new Autolite plugs so I'm feeling like that is not an issue. Run timing is set to 20 degrees BTDC by timing light.
The problem.....It chugs while idleing and also under full speed if not under load. It actually chugs even under partial load. It really doesnt clear up until under full load.
I suspect tappet clearance but the rocker arms are so cupped from wear that feeler gauge adjustment is out of the question.
I've pondered adjusting the tappets by using the adjusting screws as the gauge but I dont know TPI's to be able to convert rounds of turning into a measurement. Does anyone know that info?
Any suggestions? I've tried adjusting the idle screw on the carb in both directions and it is effective in both directions but it does not ever allow it to run smooth.
Any thoughts or comments? I'm a two cylinder guy and am open to any IH suggestions..
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Today's Featured Article - The Rescue of a Fordson F - by Anthony West. Introduction I live in the UK and have for many years restored Fordson tractors (in the main model N's). I have also restored and shown model F's, E 27N's, Field Marshall Series 2, David Brown Cropmasters and the old rey Fergeson T 20. At one time I had seven restored examples which were shown and used in ploughing matches. As most restorers, I have a number of war stories I can relate on a range of topics that may help other like minded and interested people. Perhaps my first p
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