Hi all, need some expert advice here.
I have a Kubota L245DT that had popped several freeze plugs. This tractor had been sitting about 6 months because I couldn't get it to start. Would turnover nice and fast, spin up and then stall right away. Turns out it was a stuck fuel rack on the injection pump. Got the rack unstuck and tractor would spin up and run fine, that's when it overheated because there wasn't any fluid in the radiator, it was all in the block!
I pulled the head and had it checked, all good. Pulled the front axle to get the timing cover off to get to another freeze plug, PITA btw.
Finally got everything back together, but the engine runs rough. Bled everything back to the top of the injectors, but it seems to be starving for fuel. Gravity fed fuel btw. Pulled the fuel filter, good flow. Bled to injection pump, so fuel. Pulled hose leading to injection pump, good fuel flow. Pulled elbow and bleed screw, no gunk and its clear. Just for shits and giggles, rigged funnel with fuel up directly to injection pump, engine runs good and runs up the revs quickly. Which confuses the hell out of me.
I know there is a single plunger in the pump, could the plunger be moving, but sporadically? Is there a way to unstick the plunger with out pulling it?
Can I pull the injection pump with out having to worry much about resetting the timing?
The biggest question, do I have to tow this thing in to the shop for a $1000 injection pump rebuild?
This pump is mechanical, so I would think that maybe putting some injector cleaner in it would free the plunger, if that's whats causing the fuel issue.
I'm at a loss, and broke haha. Irritated right now as well.
Hope someone has some thoughts on whats next.
I have a Kubota L245DT that had popped several freeze plugs. This tractor had been sitting about 6 months because I couldn't get it to start. Would turnover nice and fast, spin up and then stall right away. Turns out it was a stuck fuel rack on the injection pump. Got the rack unstuck and tractor would spin up and run fine, that's when it overheated because there wasn't any fluid in the radiator, it was all in the block!
I pulled the head and had it checked, all good. Pulled the front axle to get the timing cover off to get to another freeze plug, PITA btw.
Finally got everything back together, but the engine runs rough. Bled everything back to the top of the injectors, but it seems to be starving for fuel. Gravity fed fuel btw. Pulled the fuel filter, good flow. Bled to injection pump, so fuel. Pulled hose leading to injection pump, good fuel flow. Pulled elbow and bleed screw, no gunk and its clear. Just for shits and giggles, rigged funnel with fuel up directly to injection pump, engine runs good and runs up the revs quickly. Which confuses the hell out of me.
I know there is a single plunger in the pump, could the plunger be moving, but sporadically? Is there a way to unstick the plunger with out pulling it?
Can I pull the injection pump with out having to worry much about resetting the timing?
The biggest question, do I have to tow this thing in to the shop for a $1000 injection pump rebuild?
This pump is mechanical, so I would think that maybe putting some injector cleaner in it would free the plunger, if that's whats causing the fuel issue.
I'm at a loss, and broke haha. Irritated right now as well.
Hope someone has some thoughts on whats next.
