Posted by trucker40 on January 29, 2009 at 19:43:43 from (69.149.165.81):
In Reply to: Engine miss posted by rrlund on January 29, 2009 at 11:33:27:
Misses under a pull then smooths out.Well its probably not a valve because if it was a burned valve it would miss all the time.Might sound better without a pull on it,but its not going to hit without compression.Cracked intake or blown intake gasket might make it miss worse pulling.Distributor cap,wire,or distributor shaft being loose,low compression on that cylinder,are all things it could be.You didnt say what kind of tractor it is.If its overhead valves it would miss bad with a broken valve spring.Need to do a compression check if its not cap or wires.My H was doing that but it was worn out and had those resistor wires on it when I got it.Changing wires helped that but it was so worn out it would foul plugs out.I would try to rig up some way to check how its firing like a spark plug clamped on it somewhere that you can hook the wires to one at a time when it does it and see if its not a wire,or cap and which one.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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