Kubota BX2660 no fuel getting to glow plug /engine

[Devildog1968]

I've been unable to start my tractor due to fuel issues.
We replaced both fuel filters AND the fuel pump. With the fuel line off, we have excellent flow. However, when attached to the engine, we don't get ANY fuel flowing out of the metal tubes that go to the block.

I was assuming the likelihood of all 3 tube lines being blocked was pretty small and I think it must be the injector pump. I've seen ppl describing the same issues I'm having on their larger tractors, but I don't see any large component which looks like the pump.

I assume the pump is the device attach into/on the side of the block where the fuel line connects.

I was hoping someone could confirm this, advise how to remove and clean it, and/or tell me that I'm completely wrong and just provide some help.

Thanks in advance for any help (and for this site. It has been very helpful) you can provide.

Chris

 

[DustyRusty]

Your BX has 2 filters. One is located under the floor, and the other is located in the engine compartment on the driver's side. If you only replaced 1 filter, then you need to locate and replace the other. Then turn the key on and allow the tractor to self bleed itself.

 

[Devildog1968]

Your BX has 2 filters. One is located under the floor, and the other is located in the engine compartment on the driver's side. If you only replaced 1 filter, then you need to locate and replace the other. Then turn the key on and allow the tractor to self bleed itself.

I did change the pump and both filters

 

[GreensvilleJay]

disconnect the hose from the 2nd filter to the injpump. place hose in can or jar. Turn key to on, see how much fuel comes out. A good stream means filters/pump /tank OK...
No fuel..maybe bad pump/blown fuse ? Pump should make a chattery noise if working..No noise ? check fuse, maybe unplug pump , check for +12 volts.

 

[Devildog1968]

disconnect the hose from the 2nd filter to the injpump. place hose in can or jar. Turn key to on, see how much fuel comes out. A good stream means filters/pump /tank OK...
No fuel..maybe bad pump/blown fuse ? Pump should make a chattery noise if working..No noise ? check fuse, maybe unplug pump , check for +12 volts.

We did that. Fuel pumps oit almost like a gaegem hose.

we started working from the tank forward.We tested full being pumped with just the pump xonnected to test that.
Then attached the underside filter, pumled fine.
Then tested with both filters connected and that work as well.
however, when we connected it to the engine inline, we don’t get any wetness through the metal tubing on thr top of the engine block.
To sum up, everything seems fine fuel-feed wise up until its connected to the feed system on yhr engine.

 

[#40Fan]

You won't get any fuel out of the injector lines until the engine cranks over.

Is the fuel shut off solenoid working?

 

[DustyRusty]

Crack each injector line about 1/2 to 3/4 a turn and then turn the key on. It should start gushing oil out of the lines. You shouldn't have to do this but this is one way to verify that there is no clog within the injector pump. If it is the injector pump, then take it to the dealer for repair, because repairing the pump requires a lot of knowledge and proper tools to fix and reset the injector pump timing.

 

[RCW]

Bleeding air from the BX 60 series is holding the key for 30 seconds or so to bleed from the lift pump, then start as normal.

Have you turned/opened the lines from the injection pump to injectors at all?

If not, don’t do that just yet…..

 

[RCW]

If you don’t have them, get operator and workshop manuals at www.kubotabooks.com

 

[DustyRusty]

I had this problem once on my BX22, and I found that bleeding the injectors was the quick solution to the problem. Once I got most of the air out of the lines, the tractor started and coughed and sputtered for a minute or two and then smoothed out. Not everything works as well as it is designed to and the self-bleeding on these tractors is one of those things. The air in the lines gives that little pump a lot of resistance to overcome.

 

[RCW]

If you do open the lines to the injectors, do so at the injectors, and not at the injection pump side.

Don’t know the specifics, but opening the lines on the IP side can screw up the IP itself.

 

[Russell King]

Go to Kubota USA dot com and then illustrated parts list and then search for your tractor model and then search for the fuel or engine section to locate the fuel pump and the fuel injection pump. But yes there is a fuel line into it and then lines out to each cylinder.

Was the tractor running recently and quit or just wouldn’t start one day? A few more details might help.

I think you should be able to hear fuel being pumped into the fuel tank since there is a bypass tube on the injectors that then goes into the fuel tank. I have no idea if the electric pump will pump through the injection pump if the engine is not running or cranking but setting the throttle to higher than idle will allow more fuel to flow when it does flow.

 

[Devildog1968]

You won't get any fuel out of the injector lines until the engine cranks over.

Is the fuel shut off solenoid working?

Tried cranking it but nothing came out either.

I have no idea about the solenoid. Where would I find that?

The tractor was running but running rough before it stopped. I was able to get it started one more time before it stopped completely. That was why I thought it was a fuel flow blockage of some sort

 

[Devildog1968]

Go to Kubota USA dot com and then illustrated parts list and then search for your tractor model and then search for the fuel or engine section to locate the fuel pump and the fuel injection pump. But yes there is a fuel line into it and then lines out to each cylinder.

Was the tractor running recently and quit or just wouldn’t start one day? A few more details might help.

I think you should be able to hear fuel being pumped into the fuel tank since there is a bypass tube on the injectors that then goes into the fuel tank. I have no idea if the electric pump will pump through the injection pump if the engine is not running or cranking but setting the throttle to higher than idle will allow more fuel to flow when it does flow.

It's was running roughly the day it stopped. I was able to get it running once more through luck to get it somewhere I could work on it.
I'm not sure how high the idle was set when we tested it. I had other minor emergencies in between then and now. I'm not 100% but quite sure he had the throttle up of idle.

 

[Russell King]

Ok thanks for that information.

I would try to figure out what happens when to shut down the engine. There is probably a solenoid that either holds fuel on and then releases to off to shut the fuel off. The other method is the solenoid only pulls to off to shut down the fuel but should be able to allow fuel again after a few seconds. I would suspect that solenoid may be acting up or some controller is acting up.

You may be able to get the solenoid removed or tied into the running position and get the tractor running but you will need to also know how to manually shut the engine down.

That is where I would start to troubleshoot the fuel flow issue since you know that you have good fuel flow to the injection pump.

Keep notes on what you try and the results so you will be able to know what you have done since you are likely to get the same suggestions over time.

Good luck and I am sure you will get the solution if you keep posting and asking for more suggestions.

 

[#40Fan]

Tried cranking it but nothing came out either.

I have no idea about the solenoid. Where would I find that?

The tractor was running but running rough before it stopped. I was able to get it started one more time before it stopped completely. That was why I thought it was a fuel flow blockage of some sort

Take notice of how the solenoid is in the extended position when running, and only retracts when it shuts off.

 

[RCW]

This is the solenoid in run position on my tractor, a BX2360. Left side, just behind the IP.

When it shuts down, the rod retracts for about 10 seconds. Enough to collapse the rubber boot. Then it extends back to this run position for the next start.

Yours is likely same.

This is the retracted/shut off position. You can hear it click about 10 seconds after shutting down to get it back to the run position.

 

[Devildog1968]

I had this problem once on my BX22, and I found that bleeding the injectors was the quick solution to the problem. Once I got most of the air out of the lines, the tractor started and coughed and sputtered for a minute or two and then smoothed out. Not everything works as well as it is designed to and the self-bleeding on these tractors is one of those things. The air in the lines gives that little pump a lot of resistance to overcome.

How would I manually bleed them?
I'm wondering if that's my issue

 

[DustyRusty]

loosen the line at the injector a half turn. Crank till oil comes out. Do each line separately. Then try to start. If that doesn't start the tractor, you have other problems such as the shut-off valve being stuck closed.

 

[whitetiger]

This is the solenoid in run position on my tractor, a BX2360. Left side, just behind the IP.

When it shuts down, the rod retracts for about 10 seconds. Enough to collapse the rubber boot. Then it extends back to this run position for the next start.

Yours is likely same.

The BX2660 uses the D1005 engine which has the fuel shut-off solenoid mounted right behind and below the injection pump rather than above the pump which the D902 & D905 use.