It is a CAV pump, when I disassembled it it was pretty much covered with a gooey dark brown film - acetone was about the only thing that would get it off. The advance mechanism was virtually glued tight and the pump pins and rollers were also sticking, the metering valve was actually not bad . I love this tractor except for this so if I can get mine working like yours I would be very happy ... I use mine also strictly for food plots by Eveleth. I will try opening up the fuel valve when I shut it down going forward.
I do make sure the tank is full or nearly full when I shut the tractor down before storage.
I purchased some Howes additive and will start adding it along with the Bio Kleen and Diesel Fuel Supplement +Cetane Boost from Power Service. Maybe it is the fungus and other crud that is causing my biggest problem. Will also replace all filters even though flow seems good but need to get the crud out.
I did put a new pump on last summer and this spring it too would not pump just like the original pump - I am returning it for a replacement and did not want to break it down to see what it's problem was before I returned it since it is under warranty. Both the original and the new pump would squirt through bleed port but not through the injector ports ... so kind of assuming they both have the same problem. For some reason I cannot get the original pump (approx 3500 hrs) working again even after cleaning it - will squirt some fuel but not much??
Added 6/11
OK so I tore the original pump down again since it was not pumping after I cleaned it ... I could not believe the amount of brown sticky gunk that had accumulated without it ever being put on the tractor?? Can the fuel be that bad that turns to gunk in a matter of a few days? I put some Bio Kleen in a container of fuel and cleaned and rinsed it again - will leave parts soaking for a few days to see what happens.
This post was edited by Hardwood62 on 06/11/2021 at 09:29 am.
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