Hey all.
I have been having a issue with this for a little bit now. A little background first.
This machine ran fine, a Bobcat B250, before this and just started, and it runs fine til it warms up or I leave the air blead open.
Anyways:
This machines diagrams do not show a fuel pump, but has a electric fuel pump installed on it, obviously an add on installation.
I replaced all the fuel lines, filter, and the fuel pump as well, even thought the pump was working, it seemed to be at a lower flow, when I replaced it the flow did increase by nearly double.
So this is where my confusion really starts.
After installing/replacing these items was still having the same problems. would run until it was fully warmed up then chug very badly and shut down. Then, after several times of doing this I was suspecting an air leak somewhere. I unscrewed the air blead on top of the filter and air was being pushed out for a bit then diesel would run out. Closed the blead and engine starts and runs fine for a bit and dies, did this several times until I decided to leave the blead open a bit and it ran just fine, I did not run it with a load on the motor but it ran just fine til I shut it off. So 100% positive its a fuel issue.
So it seems to me the the motor is sucking the fuel line dry somehow. but any way you slice it, the pump is not supplying the motor enough fuel - or more acurately, the motor is taking more fuel then the pump is supplying.
Now I also ran the pump and it circulates all the way though and back into the tank so that seems fine.
I next removed the fuel pump. It runs the same. Just fine til warm then will not keep running.
Im not a mechanic, but none of this makes any sense to me.
Help!
Thanks!
I have been having a issue with this for a little bit now. A little background first.
This machine ran fine, a Bobcat B250, before this and just started, and it runs fine til it warms up or I leave the air blead open.
Anyways:
This machines diagrams do not show a fuel pump, but has a electric fuel pump installed on it, obviously an add on installation.
I replaced all the fuel lines, filter, and the fuel pump as well, even thought the pump was working, it seemed to be at a lower flow, when I replaced it the flow did increase by nearly double.
So this is where my confusion really starts.
After installing/replacing these items was still having the same problems. would run until it was fully warmed up then chug very badly and shut down. Then, after several times of doing this I was suspecting an air leak somewhere. I unscrewed the air blead on top of the filter and air was being pushed out for a bit then diesel would run out. Closed the blead and engine starts and runs fine for a bit and dies, did this several times until I decided to leave the blead open a bit and it ran just fine, I did not run it with a load on the motor but it ran just fine til I shut it off. So 100% positive its a fuel issue.
So it seems to me the the motor is sucking the fuel line dry somehow. but any way you slice it, the pump is not supplying the motor enough fuel - or more acurately, the motor is taking more fuel then the pump is supplying.
Now I also ran the pump and it circulates all the way though and back into the tank so that seems fine.
I next removed the fuel pump. It runs the same. Just fine til warm then will not keep running.
Im not a mechanic, but none of this makes any sense to me.
Help!
Thanks!