First post here - looks like a great forum and already gained valuable insights - thanks!
I have a Bobcat 2200 UTV with a Kubota D722 engine with 1800hrs. Was starting (even in cold) and running clean without issues. FYI this unit has electric inline fuel pump and electric shutoff solenoid.
It suddenly wouldn't start. No sign of attempting to fire, just cranking at normal speed.
No flow at injectors when cranking.
Checked fuel supply by pulling the return line at the tank. There is flow but a bit anaemic so I changed both filters, topped the tank and added conditioner just to be sure. No sign of dirt, corrosion or water anywhere.
Cracked the fuel line at the banjo attachment to the injector pump. Now there is good flow there. Checked flow at the return to tank line - half a water bottle filled in 10-15 secs so good supply flow all round.
Cracked the banjo on the injector but no flow when cranking.
I pulled the solenoid from the front of the injection pump. With key to 'crank' position the solenoid extends and stays in that position. When the key is returned to 'off' position the solenoid retracts. This seems like normal behaviour.
Cracked the banjo on the injector but no flow when cranked.
Removed the fuel lines so I can see the fuel pump ports. Cranked over with little if any fuel spray from the ports. Aha.
It seems unlikely that all three fuel injector pumps would fail completely together. I wanted to check for broken idle or governor springs in the injection pump.
I tried removing the injection pump. It comes loose but won't lift out. I must be missing something and don't want to force it.
Any suggestions appreciated.
Chris
I have a Bobcat 2200 UTV with a Kubota D722 engine with 1800hrs. Was starting (even in cold) and running clean without issues. FYI this unit has electric inline fuel pump and electric shutoff solenoid.
It suddenly wouldn't start. No sign of attempting to fire, just cranking at normal speed.
No flow at injectors when cranking.
Checked fuel supply by pulling the return line at the tank. There is flow but a bit anaemic so I changed both filters, topped the tank and added conditioner just to be sure. No sign of dirt, corrosion or water anywhere.
Cracked the fuel line at the banjo attachment to the injector pump. Now there is good flow there. Checked flow at the return to tank line - half a water bottle filled in 10-15 secs so good supply flow all round.
Cracked the banjo on the injector but no flow when cranking.
I pulled the solenoid from the front of the injection pump. With key to 'crank' position the solenoid extends and stays in that position. When the key is returned to 'off' position the solenoid retracts. This seems like normal behaviour.
Cracked the banjo on the injector but no flow when cranked.
Removed the fuel lines so I can see the fuel pump ports. Cranked over with little if any fuel spray from the ports. Aha.
It seems unlikely that all three fuel injector pumps would fail completely together. I wanted to check for broken idle or governor springs in the injection pump.
I tried removing the injection pump. It comes loose but won't lift out. I must be missing something and don't want to force it.
Any suggestions appreciated.
Chris