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This is a follow-up on the low sulfur/off road diesel fuel discussion. This week my Farmtrac 45, upon cranking revved right up to over 2000 rpm and would not respond to the throttle or kill knob. I pushed on a tree to get the rpm down to 500 or so where the kill knob shut the engine off. Later, the engine would not crank at all.

I made contact with the best diesel mechanic in my area who professed to be familiar with the problem. He described a rod inside the injector pump that in the first instance had stuck open and in the next stuck closed. He told me to drain the fuel tank of off-road diesel (and to never use same again), re-fill with regular fuel, which is now ultra low sulfur, add transmission fluid in the ratio of 40 to 1, tap on the injector pump housing, and crank her up.

It worked and the machine started running fine.

The tractor had sat unused for a couple of months, which apparently caused the problem to manifest itself. Anyway the tractor is under warranty until September of this year.

Low Sulphur Diesel Fuel
Parts and Repair
Replies 9 Post by astonman