I had gone thru changing the fuel filters, blowing back thru the line to the tank then after talking to a Kubota shop manager, changing the fuel pump. None of these helped. I then decided to drain the tank (suspecting contaminated fuel) and refilled from my neighbor's fuel can and amazingly the BX started to run better. After refilling the tank out of his can I popped the lid on my second can of fuel and could immedeately smell the gasoline in the fuel.
Ran BX pulling the same disk for 45 min. with no problems and today I cut 3 acres of grass, again with no problem.
Also my neighbor smelled the gas in both of the cans.
I suspect that as the gas hits the injector pump and is heated ( after running the tractor for a while), that the gas may tend to vapor lock the injector pump. Another explanation may be that diesel, being a heavier liquid than gas tends to separate when sitting and the tractor when restarted gets almost pure diesel until run for a while. I don't know-just guessing.
You may ask why I did not smell the gas when working on the BX, I had app 3 gal. of diesel in the tank and just topped up the tank with the diesel/gas mixture.
