funny problem w/my fordson

[Kirbust]

this year I went to do hay making at the normal time. I have some rather strange neighbors one of whom claims she doesn't like competition yet she is the worlds worst there is at farming, well up until I had started hay making my 2 fordsons, one a new major who you folks dated for me last year had been starting & running perfectly, anyway to make a long story short, while hay making some trouble maker here DR'd my new majors tank of diesel fuel, after that it wouldn't run until I had it worked on with diesel fuel all drained-new filters, replacement injectors and all except for the injector pump, I have finally been able to send a sample of fuel off to be tested however after repairs said tractor is slower starting and since then also chokes the operators nasal passages up real bad plus the engine does not sound right even now with lower high end RPMs than before plus the connecting shaft to the injector pump broke soon after repairs and my mechanic thinks that may be because of the DR'd fuel from earlier this year, any idea on how to get it back to how it should be? I should also state that the fordson was running perfect before that and never put out whatever it is that blocks up ones sinus cavity until it was messed with and even now it pops some when running esp near low idle and would love some input on how to resolve this........about now a month to 6 weeks ago my super major seems to have been attacked as well with a lesser volume of whatever it was that the new major was hit with mid summer this year as it has become slower starting and is now popping some much like the new major did earlier this year

[Brian]

Sorry to hear of your problems, if your fuel has been "spiked" it may have damaged the injection pump and that may need specialist attention. Drain the fuel tank and all filters, flush out the system with clean fuel before re-filling it. Make sure your timing marks on the engine and the drive coupling line up correctly with either the 23 degree mark on the flywheel or the pointer on the front pulley on earlier Majors.

It may also be an idea to check the drive key on the engine end of the pump drive is OK, sometimes these used to wear and damage the keyway in the shaft so you do not get a true reading of the pump timing. This would not be connected to any "spikeing" just normal wear but it would make the engine smoke and run rough.

The usual "spikeing" ingreediant for a petrol engine was sugar in the petrol, I do not think it has the same effect on a diesel but the person who did it may not know that.

A litre of Automatic Transmission Fluid in your first tank of diesel would also be helpful in cleaning and lubricating the system.