Posted by Bob on June 21, 2010 at 12:03:51 from (69.178.228.68):
In Reply to: IH 424 posted by Two Banger on June 21, 2010 at 11:35:03:
First off, put a spark tester on one of the plug wires and watch it as the tractor begins to warm up to verify for SURE that you are not actually losing spark.
If the spark continues strong as the the engine begins to act up you KNOW it's a fuel problem.
"We checked the fuel pump and its working and the fuel lines are open."
If you are indeed having fuel problems, that statement probably isn't 100% true.
First off, do you have the proper vented IH safety gas cap?
First thing I'd do is (SAFELY, with the tractor COLD, outside, fire extinguisher at hand), take off the gas cap, then blow backwards into the fuel line from the sed bowl with compressed air.
(If you're too aggressive with the air, gas MAY spatter out the filler neck.)
This will clear out any crap that may be in the fuel lines or the fitting/valve at the bottom of the tank.
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