So here I am again guys with another problem. I know I am probably just working through them with this old 1958 Case 801B tractor, but its starting to become a major headache. So I noticed that while I was mowing yesterday, (first time I have used the tractor since I bought it a year ago and tearing it down to fix a few things and take care of some WAY overdue maintenance issues,) that the rpms would jump sometimes for a few moments and then go back down. Well, it did it again this morning, and it stayed that way. I had to take my shirt off and shove it in the air intake to get the old girl to shut down. The injection pump is a rotary style pump. American Bosch PSB4A-75D-3594C5. I have been told there are some slip clutches inside the pump that probably stuck together causing the uncontrolled engine rpm situation. First quote I got over the phone was $1000+. When I started it up, the seals had all shrunk and was leaking diesel really bad. I was advised to put some Type F AFT in with the diesel to help the seals swell back up. I did, and it stopped leaking, but now I can't control the rpm. Related? Or bad timing? Anyone have a spare that they are looking to sell? Know someone that rebuilds?