On diesel engines my best advice is, if you don&#039;t know what you are doing, let someone who does repair it. I am seeing all sorts of advice concerning injectors, and pumps, this can be a dangerous thing, especially when you go tinkering inside the pump, and don&#039;t understand there is a fuel-air balance that must be kept throughout the power range. Too lean can cook your pistons and valves. Then the next thing will be messing with the governor, whether by purpose or not. I have seen diesel engines come apart like great big hand grenades, due to someone souping them up, it is not a pretty sight, and you definately do not want someone near enough to get hurt, or killed. That would be bad, very bad! There is probably a collector near you who is a diesel technician, maybe even worked for an Oliver dealer, check your HPOCA membership directory, there is probably someone near you who can find someone knowledgable. (If you don&#039;t have a directory, buy one, it is the best 10 bucks you can spend.) I suggest you find such a person, and have your tractor put into factory specs, takes most of the problems out of the equation. Safety First!!!
Later, Andy