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Yesterday's Tractor Forums
  1. 1

    Farmall m

    It is set at stock timing marks. I just set the carburetor back to stock specs and then played with the air adjustment screw. The tractor was on a dyno to break it in and has roughly 40 hours on it at this point. I've had this problem before and brought it to a guy and he played with it and told...
  2. 1

    Farmall m

    It has ngk ab-6 in it
  3. 1

    Farmall m

    Plugs are autolite byt can't think of the number at the moment. They came in the electronic ignition kit
  4. 1

    Farmall m

    Timing is set to stock settings. When I said played with timing I meant turning the distributor to advance and turned it to retard. I don't believe it is a rod knock I believe it is a timing knock or ping. I run super in it. I have pulled the head off to see if I have enough clearance and I do
  5. 1

    Farmall m

    Hey guys. I have a 1939 farmall M. I have recently rebuilt it. It is 263 cubic inch with lp head. New cam and lifters. The problem I am having is when warmed up going down the road in 5th gear at full throttle or under a load as in going up a hill it knocks and I can't seem to figure it out. I h...
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