El Dee - I'm having the same problem on the same tractor at the moment. 1711Cub has some good advice about checking simple spark and compression first, but as history has proven again and again "it is never the simple stuff" LOL JK!
What I find interesting is that I have also monkeyed with the OEM fuel delivery system on the tractor. You have added an electronic fuel pump while I have installed a new mechanical pump and added a electronic fuel shut off solenoid. My current setup has work perfectly for over 12 months now and only recently has the tractor become "cranky" (pun intended).
I'm not sure how you have you fuel pump wired but I was only able to figure out how to get my fuel shut off to have power when the key was in the "run" position. While cranking the fuel shut off is closed. Until now that setup was zero problems unless I ran it out of gas. When I had the manual shutoff I would constantly forget to open it before I started the tractor and moved it out of the shed. So I know there is enough fuel in the bowl, pump, and lines to start and run the tractor for a few minutes even with the solenoid closed while cranking.
I suspect its a carb issue. I have rebuilt this carb twice already and given the price of a new one from Norm I think I'm going to order up a minty fresh one and go from there. These carbs are known for having a leaky float valves and gravity feeding the cylinders full of fuel when parked, depending on the fuel level in the tank. Been there done that, that's why I installed the electronic fuel shutoff on my machine. I'd image your electronic fuel pump does not let fuel pass when it is not powered on either.
|