GR2110 won't start (new to diesel) please help.

[donovjim]

Ive a new to me GR2110 with 148 hours on it. I used it only once before I lost power and stalled. The water pump must have been very bad as I lost alot of coolant from the weep hole so I replaced it with a new one. Having replaced that, thermostat and coolant I was feeling good about it and got a quick start and 5 minutes operation before it stalled; started again for 30 seconds and stalled again - turns over well but has not run since.

Im looking for guidance. I'm picking up 2 fuel filters and will replace them. In the process I will drain the tank and do my best to "blow back" with some air to see if there is a tank blockage... The lines are mint condition and Im wondering if "bleeding" the injectors is critical?
Any tips are helpful.
Do I bleed all lines at once or one at a time on turn over?
Should I be looking at something else? (if it were gas Id say it feels like a loss of fuel and or the pump but diesel is new to me)
Does anyone thing i have a MUCH larger issue that I have not considered?

This thing was the real deal while I used it but very disabointing right now. Jim

 

[rentthis]

It sounds like you are on the right track. The engine is to new for me to think you have devalued fuel lines. The filters alone might do the trick. That's where I would start before draining the tank etc. If you change the filters, you will have to bleed the injectors. Kubota puts a bleed valve on the side of the injector pump of most or at least a lot of their engines. If you see a valve there with a knurled knob about the size of a quarter, turn it counter clockwise fully open. Then crank the engine over being careful not to over heat the starter. After a fairly short time, the engine should start. With the engine running, close the valve and be on your way. If the machine doesn't have the valve, you will have to bleed at the injectors. You can do them one at the time or all at once. One at the time usually makes less of a mess. Most injectors require a 17mm wrench. Crack an injector fitting with the wrench and crank the engine until you get good fuel flow from the injector, tighten the injector and repeat with the other injectors.

 

[sheepfarmer]

I can't help you on this particular model, but it seems like there have been a rash of water or otherwise contaminated fuel issues on the forum lately, and so I think dumping old fuel, cleaning tank, and new fuel filters would be the safest first step before worrying about the bigger things.

 

[North Idaho Wolfman]

Smell the fuel, does it even slightly smell like gasoline?
If it does the dump it and replace all of it.
Fuel filters are a good idea.
You can crack all the lines to the injectors and bleed them all at once.

 

[donovjim]

Thanks everyone for your replies. I actually read these while methodically working back from the tank. I replaced both filters and found that bleed valve. I got no good result and went to the pump. As it was factory installed and difficult to remove I disconnected the power and blew compressed air thru. (both ways) and reconnected with upstream disconnected. I got a good flow and hooked it all back up. Bled as advised and boom! I'm back in business!!
I'm thrilled..this little thing is awesome when it runs.
I expect I had (from the look of the filters
.. enough crappie in them and stuck in the pump that I had no fuel flow.
Small issue but big concern all gone. Thanks!!