DESCRIPTION:
The tractor runs well at any speeds without PTOI engaged. Once PTO engaged, engine stopped at higher gears (4 or 5), or stalled or hiccupped at gear 1 for a while, then stopped. Sometime engine had blue smoke. It happened suddenly after perfect run for 1.5 hrs in two weeks ago. I don’t think it is water-in- fuel problem. Oil level is good. Battery is 13V and seems fully charged. What is the problem? Fuel pump or electrical problem? Thanks in advance.