L1500 hard starting caused by my own mistakes?: Kubota Review  -- Kubota Tractors Discussion Forum and Review L1500 hard starting caused by my own mistakes?: Kubota Review -- Kubota Tractors Discussion Forum

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 01-13-2001, 10:19 Post: 23390
Paul Stryker



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 L1500 hard starting caused by my own mistakes?

My starting problems developed after a chain of events. Any advice is appreciated. I let my L1500 run out of fuel (first mistake), refilled the tank, did my air bleed off, and was opertating it for about 10 minutes when it stalled. I thought, well, I have never changed the fuel filter (second mistake), so I better. I did, did the bleed off again, and from that point on, I could never get it started again. The glow plug does just fine (bright red), but it just won't start. Did I stir up some trash from letting the fuel tank run dry, allow the trash to bypass the overworked dirty fuel filter? Where did that trash go? Injectors? If any agree that that may be my problem.... I looked in my, similar number to my gray market model (L185) owners manual, and could not find any help on locating my injectors or how to clean them myself. It stated that if there is trouble starting, it might be dirty injectors, but no help in finding them or how to clean them.I admit that I know how to change my fluids, but little else in mechanical abilities. Is my diagnosis correct? If so, help me on how to correct, please. Thanks. P.S. When I crank the tractor, the 3 pt hitch lifts up...and 3 pt was doing so before it stalled...never noticed that happening before...maybe unrelated to current problem.






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 01-13-2001, 12:46 Post: 23391
TomG

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 L1500 hard starting caused by my own mistakes?

If the tractor was run out of fuel, the injector lines probably have air in them. If so, bleeding the fuel bowl and pump won't necessarily clear air from the system. I think procedures vary a bit from tractor to tractor, but the general idea is to loosen one injector line fitting at a time at the engine end (VERY SLOWLY) and then crank the engine until fuel comes out the fitting, and retighten it. The throttle should be partially open, and everything must be clear in the engine compartment. The engine can start and catch fingers in fan belts etc. It's best as a two-person job. A lot of care has to be taken with this procedure, and nobody should attempt it without reading a written procedure for the particular tractor. An injector line can contain fuel at over 1000# pressure. The pressure is enough so that a good squirt can penetrate the skin or blind a person.

Anyway, checking for air in the injector lines is a good test to see if fuel is getting to the injectors, and the test might also cure the problem. I've never had air in the injector lines on my 1710. However, the 1710 pumps are difficult to bleed. Sometimes I have to bleed it and the bowl several times. When I have air in the fuel lines, my 1710 starts a little and barely turns over for a few seconds before it dies. It never has been completely dead, but then I've never had to loosen the injector lines. The bleeding port on the pump body may not clear the air very well. Sometimes I loosen a banjo fitting where the input line attaches to the pump body.






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 01-13-2001, 13:05 Post: 23394
Roger L.



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 L1500 hard starting caused by my own mistakes?

Bleed the fuel lines both leading to and going from injector pump. Bleed them all the way up to the injectors themselves. It is done by loosening the banjos until fuel runs out when you crank the tractor. Bleed them again. And again. And again.... The engine will be covered with diesel before you are done. You too. Finally if nothing works you can amuse yourself by replacing the fuel filter....then you will have to bleed the fuel lines for sure! Again and again. Don't give up... You just have some air trapped in the fuel line. The most likely culprit is a bubble between the pump and injector in a bend in the line that is at the highest point. This bubble is keeping fuel from getting to the injectors. You have to get it out of there... Keep cranking...






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 01-13-2001, 14:46 Post: 23395
Bird Senter

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 L1500 hard starting caused by my own mistakes?

I'm not familiar with that particular tractor, and I think the other guys have already answered your question, but it may not be as bad as it sounds. I ran my B7100 out of fuel once myself, and a neighbor did it again, and both times I bled the injectors at all 3 cylinders by self in about 10 minutes and was going again.






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 01-27-2001, 07:34 Post: 23724
Kevin Beitz



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 L1500 hard starting caused by my own mistakes?

I was told that you could start your tractor up and keep it running on WD-40 untill the air would get out of your lines...
I guess they would fill the injector line up with the WD-40.






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 01-27-2001, 07:41 Post: 23726
DennisCTB

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 L1500 hard starting caused by my own mistakes?

you must have the http:// in your links I have inserted it for you in the box. Please maske sure you type it just once.






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Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

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