Hey all. Long time lurker but first time posting. Had a few questions for you all.
I have what I thought was a failing injection pump(JDB) on my 4020 but wanted to get your 2nd opinion. For quite some time I've noticed when the tractors running the rpm will creep up on it's own unless I jockey the throttle lever, then will stay pretty constant after that.(For a while) Also at first start it will run up a bit unless I catch it with the hand throttle. For the most part it still runs pretty well until just a few days ago when I was clearing snow in my driveway. It seemed to lose power and was missing, blowing white/ grey smoke out the exhaust with what looks like raw fuel collecting on the pipe flapper. It does seems to clear out a bit if you bring it back to idle but skips again when trying to hold higher rpm.
I limped it into my shop and was dead set on removing the injection pump and while inside I got to checking some other things and noticed the oil is very runny and over full.
I've read most times that's caused by the transfer pump, or the umbrella seal on the pump driveshaft. With all that said would a failing transfer pump cause any of the above symptoms?
I pulled the inspection cover on the injection pump expecting to see flex ring bits but it was clean. That makes me wonder if the transfer pump is causing my issue if it can't supply enough fuel to the injection pump?
I have what I thought was a failing injection pump(JDB) on my 4020 but wanted to get your 2nd opinion. For quite some time I've noticed when the tractors running the rpm will creep up on it's own unless I jockey the throttle lever, then will stay pretty constant after that.(For a while) Also at first start it will run up a bit unless I catch it with the hand throttle. For the most part it still runs pretty well until just a few days ago when I was clearing snow in my driveway. It seemed to lose power and was missing, blowing white/ grey smoke out the exhaust with what looks like raw fuel collecting on the pipe flapper. It does seems to clear out a bit if you bring it back to idle but skips again when trying to hold higher rpm.
I limped it into my shop and was dead set on removing the injection pump and while inside I got to checking some other things and noticed the oil is very runny and over full.
I've read most times that's caused by the transfer pump, or the umbrella seal on the pump driveshaft. With all that said would a failing transfer pump cause any of the above symptoms?
I pulled the inspection cover on the injection pump expecting to see flex ring bits but it was clean. That makes me wonder if the transfer pump is causing my issue if it can't supply enough fuel to the injection pump?