Fuel problem 4035

[dzbick]

I have a fuel problem with a 2012 mahindra 4035 diesel. Will run about 20 minutes then starts sputtering and losing power. Have changed fuel filter and can't find any leaks. I believe there is a fuel shutoff valve on fuel pump that shuts off return line. Anyone have any suggestions. Haven't pulled fuel tank but it's a major undertaking, especially with front end loader

 

[Peter 315]

I would start at the top check the fuel cap vent. Then check the flow at the fuel filter inlet . Work you way down the line....

 

[Harry in Ky]

Your problem may well be a fuel supply problem, but maybe not. Does the injection pump have two solenoids? One on the very top of the pump and another slightly lower and farther back on the pump? If it does, I have some quick tests you might try involving the solenoids.

 

[Molalla1]

Have you pulled the line from the tank to your filter, it may be plugged.

 

[Brian2665]

I have a fuel problem with a 2012 mahindra 4035 diesel. Will run about 20 minutes then starts sputtering and losing power. Have changed fuel filter and can't find any leaks. I believe there is a fuel shutoff valve on fuel pump that shuts off return line. Anyone have any suggestions. Haven't pulled fuel tank but it's a major undertaking, especially with front end loader

Check your fuel lines at the filter they crack enough to suck air and not notice a leak. Wiggle the lines around when running you will see the leak. That happened to me easy fix

 

[Harry in Ky]

Did your problem come on every twenty minutes like clockwork? Go away after stopping the engine, restarting, then return again after twenty minutes? Most fuel line and/or supply problems don't quite follow that pattern.

 

[hayboy48]

After about 10/15 hrs trying to fix a similar problem on my 4025, my guy drilled the hole a little larger in the shut off valve. Problem solved except for all the hair that was pulled out. I do have all new lines and a clean tank trying to fix this.

 

[mopedal]

Your problem may well be a fuel supply problem, but maybe not. Does the injection pump have two solenoids? One on the very top of the pump and another slightly lower and farther back on the pump? If it does, I have some quick tests you might try involving the solenoids.

How do you check the two solenoids? Other than checking the power when the key is on or feeling it click when you turn the key on is the only way I know.

 

[Harry in Ky]

How do you check the two solenoids? Other than checking the power when the key is on or feeling it click when you turn the key on is the only way I know.

That's about all one can do in regards to testing the coils. Anything else would be dictated by circumstances.

 

[Harry in Ky]

How do you check the two solenoids? Other than checking the power when the key is on or feeling it click when you turn the key on is the only way I know.

I don't really mean to be nosy, but why are you concerned about solenoids?

 

[mopedal]

I believe I’m having a problem with my shut off solenoid. I was using my tractor and it just shut off. Haven’t been able to restart it since. I had previously put a transfer pump at the tank a while back because it was running out to fuel. It run perfectly since that time but a couple of days ago, it did the above. I know I’m getting fuel to my pump, but it don’t appear to be getting to my nozzles. That’s the reason I think it may be the shut off solenoid.

 

[Harry in Ky]

You've tried the "jumper wire with 12V" and listened/felt for the click? You're testing the right one? The one on the top front of the pump, not the one on the side.

 

[mopedal]

Both of them are moving when the key is on.

 

[mopedal]

Yes, I checked it with a jumper from the battery it clicked from using the switch as well as from the jumper.
This started whileI was driving back to the barn and it was like it overloaded (just a little) and at the same time acted like you turned the key off and it just died down to nothing. That was the last time it ran. Fuel supply seems to be good, getting plenty of fuel to #3 nozzle and the air cleaner looks good. The only other thing I can think of is the timing but up until this time it was running perfectly with plenty of power. I later did something I normally don’t do which is a spray of ether. It started up, but only ran on the vapors of the ether and just as quickly it died, as if it wasn’t getting any fuel. Any ideas or suggestions would be great and very much appreciated.

 

[Harry in Ky]

The shut off solenoid could always fail without notice, but it's rare. That style will have a rubber plunger on the end that blocks fuel flow through the pump when no power is applied. You can try to remove the unit and bench test it, but be sure to clean off the area around it before doing so. Disturbing the solenoid will stir up whatever crud has accumulated around it. Removing it will open up a passage for some of that to jump right into the now vacant hole. I've seen a few units of that type fail, and have removed the rubber plunger and put the unit back in on occasion to allow the engine to run. You have to find an alternative means of stopping the engine, like shutting it off in gear and holding the brakes. Awkward, yes, but it allows one to get the engine running and/or prove that the unit works or it doesn't.

 

[mopedal]

I’ll take it off again but, I never saw a rubber plunger.

 

[mopedal]

I took it back off, but I could not find any rubber plunger. I should have taken a picture, but didn’t. It appeared to be a cylinder shape with a screen halfway up the cylinder. I hope that makes sense.

 

[Harry in Ky]

Not that it really matters, but while it was off did you bench test it with 12v to see what moved when power is applied and removed? At this point I rather doubt the solenoid is the source of your current problem.

 

[mopedal]

Based on what has transpired so far, do you have any suggestions where to go from here.

 

[mopedal]

I’m still struggling to gain any ground on getting my 4035 running. I went ahead and pulled out the shut off again and this time took a picture over yet along with the picture of the hole it screws into.(I was trying to see if rubber plunger would show up in the picture, but I didn’t see one).
I also make sure the pump was getting adequate fuel(see video).
Does anybody see anything that doesn’t look right or, does anybody have any suggestions on what to look for next?