Fuel Problems on Diesel

[DBT780]

Diesel tractor runs great for 10 minutes to 3 days then suddenly engine will race, stumble and die. Have checked for air leaks in the lines, can't find any. Have pulled and cleaned tank, replace filters, replace fuel pump, still does same thing. Getting tired of pulling her to the barn! Could it be the injector pump needs rebuilt? If anyone has any ideas it wouold be appreciated.

The tractor is a David Brown 770

Thanks

 

[FarmerHR]

Before tearing into the injector pump, you might make sure the fuel cap is venting. You can look it over or not put it tight on the filler neck and run the tractor to see if the problem is gone. Good Luck ! Keep us posted on what you find . Many Thanks !

 

[Camboted]

When you replaced the filters are they plugged? If you so, you may have that bacteria in your fuel. You"ll have to steam clean the tank and use an additive to kill the bug.

 

[DBT780]

Thanks for the suggestions. I will try the fuel cap and see what happens. I thought it may be bad fuel also. I have pulled the tank but didn"t steam clean it. I have replaced the filters about 4 times now. When it dies and sits a day or two it will restart and run, but you never know how long, may run a couple days or may run less than an hour. Have only used clean fresh fuel since the first set of new filters. Guess I need to pull the tank again and steam it?

 

[DBT780]

OK, tried running with the fuel cap loose, nope didn"t work. Hoped it would be something that simple, but I guess not. Ran her for about an hour and a half today before she started stumbling. She let me get back to the barn this time. Makes no sense, haven"t tried steaming the tank yet, guess thats the next step. Anyother ideas would be appreciated.