Oil & Fuel tn75s tractor fuel system problems

dannybutler · Dec 7, 2009

my new holland tn75s tractor doesnt seem to be getting any fuel. what could be the problem?

jinman · Dec 7, 2009

Try these in the order listed:

-fuel in tank
-seat interlock open/broken
-fuel pump
-fuel filter
-water/ice in the lines
-fuel cutoff solenoid

dannybutler · Dec 7, 2009

Thanks for the reply. just one more question where is the cur off solinoid located?

RickB · Dec 7, 2009

Take the banjo bolt off the inlet port of the transfer pump. Clean the plastic shavings and dead insects from the bolt, banjo fitting and last couple inches of fuel line. Remove the top of the transfer pump (single 10mm hex bolt) and clean the screen. All this assuming you have fuel in the tank, clean filter, properly bled the air, etc.

Hooked_on_HP · Dec 7, 2009

I have to ask,how do you get insects in the fuel line?
Bill

RickB · Dec 8, 2009

Hooked_on_HP said:
I have to ask,how do you get insects in the fuel line?
Bill

Through the tank's fill cap. Stuck to the inside of a funnel and washed in by the fuel stream. Stuck to the inside of an open fuel jug. Many people that fuel tractors by cans and jugs get all manner of crap in the tanks. You work on this stuff long enough, you see a lot. And much of it you see over and over.......

jinman · Dec 8, 2009

dannybutler said:
Thanks for the reply. just one more question where is the cur off solinoid located?

Fuel cutoff solenoids are normally located on the back side of the injector pump and are identifiable because they have a single wire going to them. Often, safety interlocks just interrupt the power to the fuel solenoid. If your solenoid is not energizing with a "click" when you turn on the key, then it might be an interlock stopping it from operating. You can jumper 12v to the solenoid to test its operation. Don't assume it is bad just because it is not energizing.

I think you should listen to RickB's advice. He's the expert/professional here with lots of TN experience. I'm sure he's suggesting what he has seen before.

You haven't given us a lot of info to go on for suggestions. For example, we don't know if your tractor quit while working and would not start or if it ran fine the last time you used it and now won't start. Little bits of info like that can go a long way in helping to analyze the problem or eliminate many possibilities. Help us so we can better help you.

AndyMA · Dec 8, 2009

Don't really want to offer this, but about 4-5 years ago worked my TN75 all day and was fine. Parked it and wouldn't start in morning. Tried all obvious things and those that service manager could help me with over phone. Service tech showed up and repeated all I did. Turned out to be injector pump just gave out when just over 1 year old. New Holland was out of stock on pumps? (does that mean anything?). Pump was rebuilt and has been fine ever since.

Andy