Oil & Fuel JD 410 fuel problem

[JD4102004]

I have been having a problem with my 410 backhoe quitting after it has been running for a while. It acts like it is running out of fuel. Let it set for a few minutes and it will start again and run for a few minutes then die again. I have replaced filters, new fuel pump, rebuilt injector pump, good fuel flow to the injector pump. Any one else seen this problem? When it quits it just dies slowly.

 

[Kubota 2350]

Sounds like a pluged fuel filter.

 

[Henri88]

Sound like it is starving for fuel. Does it run longer if it just idle vs running at 1800 rpm? What is the temperature, is it below freezing point? I use to have a hough 60 payloader that came up with the same symptom you are describing. We did pretty much the same thing you did, filters, fuel pump, ect. Problem was in the fuel tank. A piece of plastic bag in the bottom of the tank. Start the engine and the plastic would block the fuel pick-up. Engine would stop and the plastic would dislodge itself. Start the engine and the plastic was getting suck-in again. If it is very cold, it could also be slush in the bottom of the tank. Our fix was to remove the pick-up fuel from the tank and inspect it, and drain the fuel from the tank. That's where we find the piece of plastic bag. Good luck:thumbsup:

 

[JD4102004]

Everything is clean including the tank. It doesn't matter if the temp is warm or cold. This problem has been bothering for over a year, and nobody seems to have a fix.

 

[RalphVa]

This happened last winter on my 4010. Have you had nights below 10 F? Your profile doesn't show where you are.

The problem on my 4010 was a couple globs of wax partly plugging the outlet line from the fuel tank. Once the tractor engine quits due to fuel starvation, some suction pressure is released on the wax globs such that a little fuel can flow to start it. Rev it up much, and the globs get sucked tighter into the fuel tank outlet line hole causing the engine to shut down. When this happened, I could limp home at low rpm, but it wouldn't stay revved without cutting out and possibly dying.

There's a wax settling phenomenon that occurs on ULSD. If you do a search, you may find the articles that were references by whomever told me about it.

I siphoned my tank and then used a fish tool to grab the wax globs off the bottom of the tank (pouring in warmed kero would have dissolved them, but how to safely heat the kero?). Then refilled with fresh fuel (or just running your old fuel through a something like a coffee filer) fixed my problem. Didn't have any more nights below 10 F. Also, I put some PS additive in (according to the article cited, some older additives may not work to keep this from happening on ULSD).

Ralph

 

[Henri88]

Some info. is really missing here for members to help you out. I understand your frustration with this problem. You say this problem been bothering for over a year. Are you saying that your backhoe have not been working for over a year, or is this an intermittent problem? How long will it run and at what rpm, before it stops? Is it always the same length of time? The more info. you pass on, the easier it is for poster to help you out.:thumbsup:

 

[jd110]

How about the return line? Is it restricted anywhere? An easy test is to run the tractor until it quits, then loosen the two screws holding the timing window on the injection pump. Place a container under the pump to catch leaking fuel and then restart the engine. If it continues to run longer than normal, tighten the screws and see if it quits again. If the return line is clogged, too much pressure builds in the pump and it will shut down. You mention a rebuilt pump. The fitting that screws into the top of the pump for the return line contains a check valve that sometimes gets clogged when pump goes bad. If that fitting was not replace when pump was rebuilt, that could be your problem.

 

[JD4102004]

The check valve has been checked out and working fine. As to the length of time it will run it varies, sometimes i can use it for several hours with no problems and other times it will only run for 20 minutes or so. I guess my next step is to check out all the return lines from the injectors to the tank and the injector pump to the tank. That will have to wait until next spring when the weather warms up. It is 5 above zero her in Old Town, Maine right now. BRRRRRRRRR

 

[Henri88]

Don't you hate intermittent problem like this one. It reminds me so much of the problem I had with my loader, symptom are exactly the same, but if you are sure your fuel tank is clean.....:confused2: