Posted by David V on April 22, 2008 at 04:24:33 from (208.157.186.166):
Hello gents, I've got a problem that I thought I had solved this winter but yesterday realized I hadn't:
Tractor is 1960 504 Gas, C-153 engine, TA Serial No. 4705 S-Y-CC-FF
Problem is this: Starts and runs great and after about an hour begins to lose power. If I'm running around in 4th gear, pretty soon I'm in 3rd and not long after I've got to limp along in 1st. At times it's almost like I'm dropping cylinders, like I'm firing on all four and then three, and if I idle it down in a lower gear it finds all four again, that's how it sound anyway.
Thing I've tried: I thought this was a moisture issue during the winter and it seemed solved by swapping out a clean dry distributor cap, but that wouldn't do it yesterday. I also switched the coil in case that was on it's way out. Thanks for any input.
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