banjoblast
Member
My JD D is missing at full load, I think the engine is starving for fuel. I have all the passages clean and it flows a decent amount of fuel out the bottom of the bowl without it running. With the tractor running at idle it will run some fuel out of the bottom however at full load I can open the valve at the bottom of the bowl and nothing comes out. So at full load it will run good power for 3 or 4 seconds and then it will stumble and miss and then it will pick up and run okay for a few seconds. I have a proven carb on it (one that runs good on another D I have) and no matter what the needle setting are, it will not smooth out and pull steady. The cam I have in it is ground to (in my opinion) hold the intake valve open too long (but what do I know). Any theories out there?