O'l Kubota wont start after replacing fuel filter...

[skrause]

I have read similar posts regarding Fuel filter related issues but they don't seem to cover my situation.
I have inherited a Kubota L235 that sat in a barn for a year and had poor maintenance before that. After dealing with some electrical problems and being introduced to fusible links I got it started, Ran it long enough to get it on a trailer and shut it down. I changed the oil, drained the fuel tank and replaced the fuel filter. I bled the fuel system first with the valve on the injector pump and then opened the injector nuts and unseated the lines. It took longer than I thought it would for fuel to begin bubbling out around the injector lines, at least a minute of cranking maybe more. I re seated the lines and tightened the nuts and tried to start it several times but no go. I loosened the nuts again to bleed the lines in case I hand not gotten all the air out before and this time after more than a minute no fuel. I took the nuts completely off and removed the lines and cranked it again and no fuel. When I open the bleed valve on the side of the injector pump a steady stream of fuel comes out. This is my first time to do any maintenance on a diesel engine so I would appreciate any suggestions on what to try next.

 

[ejeffas]

Neighbor had a similar situation and the result was he still had air in the line. He just kept at it and finally got the air cleared.

 

[RalphVa]

I'd be surprised if it isn't self bleeding through a recirculation line. Even our 1983 240D Benz had that feature. Only time I had trouble with the 240D not starting after MANY fuel filter changes over 25 years was when the rubber connecting lines between the low pressure fuel pump and the fuel filter got radial cracks that caused air to to aspirate into the fuel. Replaced the line, and everything was okay.

I'd look for this possibility, e.g. air aspiration via an old part that has cracked.

Ralph

 

[whis]

soak a rag with gas and hold over breather intake while cranking

 

[banjodunn]

G'day and :welcome: just a thought but if it has a stop lever/cable is it pushed right in to the start position?? If you have fuel to the inj pump it should pump out the delivery ports, if not it is in the stop pos and that is either from the cable or the rack in the pump has jammed. Also most kubotas I have seen need heat to start ( glow plugs)



Jon

 

[duroc]

soak a rag with gas and hold over breather intake while cranking

And why would he do that?

 

[BertZegers]

I have read similar posts regarding Fuel filter related issues but they don't seem to cover my situation.
I have inherited a Kubota L235 that sat in a barn for a year and had poor maintenance before that. After dealing with some electrical problems and being introduced to fusible links I got it started, Ran it long enough to get it on a trailer and shut it down. I changed the oil, drained the fuel tank and replaced the fuel filter. I bled the fuel system first with the valve on the injector pump and then opened the injector nuts and unseated the lines. It took longer than I thought it would for fuel to begin bubbling out around the injector lines, at least a minute of cranking maybe more. I re seated the lines and tightened the nuts and tried to start it several times but no go. I loosened the nuts again to bleed the lines in case I hand not gotten all the air out before and this time after more than a minute no fuel. I took the nuts completely off and removed the lines and cranked it again and no fuel. When I open the bleed valve on the side of the injector pump a steady stream of fuel comes out. This is my first time to do any maintenance on a diesel engine so I would appreciate any suggestions on what to try next.

Does it have a electric shut off? If it has, you need to turn the ignition on to open the valve on the pump.

 

[whis]

If you put a gas rag on air intake it will run on the fumes and most of time will get the air out. Its a lot better than either

 

[Kubota81]

Hey man this happened to me and my father once go to the right side of your tractor to the fuel filter switch and turn it on to high capacity it will run more fuel through the injectors