Tractor Repair: 574 International tractor disel

Question
Start and run good at idle.Under a load will sputter and die.What could be the problem.Thanhs

Answer
Forrest, this is a tough question, because there are a lot of things that could cause those symptoms. First, change your fuel filters and make sure that your injector pump is putting out sufficient pressure. Bleed your injector lines completely. If this doesn't solve the problem, look for problems with your injectors. Erosion happens, and they must be replaced.