Kubota rtv900 w/900 hours flamed out...

[gjd52]

Hello out there,
During the summer my Kubota flamed out-first it was hard to start then it wouldn't! Realized the fuel was many years old and drained the tank out by disconnected the fuel filter. Fresh fuel but still no start. Is there a mechanical fuel pump on this 2004 rtv 900? Or is the fuel pump in the injector system? When the starter is engaged no fuel is being pushed through the disconnected fuel filter. Any tips to resolve this problem?
thanks,
gj.

 

[timswi]

Hello out there,
During the summer my Kubota flamed out-first it was hard to start then it wouldn't! Realized the fuel was many years old and drained the tank out by disconnected the fuel filter. Fresh fuel but still no start. Is there a mechanical fuel pump on this 2004 rtv 900? Or is the fuel pump in the injector system? When the starter is engaged no fuel is being pushed through the disconnected fuel filter. Any tips to resolve this problem?
thanks,
gj.

Pull the line before the fuel filter...Diesel can get algae growth if it sits too long...I believe the pump is in-line under the machine.

The filter might be crudded solid for lack of a better term.

 

[DDM84]

Your RTV has a mechanical fuel transfer pump. Follow the fuel line from the filter to the pump. Remove the fuel line from the pump and lower it below the fuel level in the fuel tank until fuel runs out and hook it back up to the pump. Then follow the fuel line coming out from the other side of the fuel pump up to the injector pump. Remove the fuel line from the injector pump. Have someone run the starter to try to get the transfer pump bled while you hold the hose over a bucket. If you can't get the fuel flowing you may have to remove the fuel tank cap, insert the air nozzle, and cover the rest of the opening with your hand and a rag, and build a little pressure with compressed air (don't over do it) to help the fuel flow. Once you get a constant but "pulsing" flow of fuel coming out of that line while running the starter, hook it back up to the injector pump. You will have to run the starter a bit more to bleed the injector pump. If you get to that point and you still can't get the engine to fire, crack the fittings on each of the injectors ends of the high pressure fuel lines one to one and a half turns with a 17mm wrench (or 11/16") and run the starter again. Fuel should slowly leak from all three injector fittings threads once they are bled. If you get fuel from all three retighten the fittings and start the engine. If you don't get fuel to all three try running the starter a bit more. if you still have a dry injector there may be a problem with the injector pump. Good luck and keep us posted.

 

[gjd52]

Thanks for replying. Replaced the fuel pump($100.00) which fixed the problem. Didn't even have to bleed the injectors.