New Holland 3010 cutting out

meat_fire · Jul 12, 2005

I have a friend who has a New Holland 3010 tractor. It only has 200 hours on it but is about 8 years old. It has developed a “miss/cutting out” when running full rpms. He has changed the fuel filter, added sea foam (at advice of dealer), changed air filter. He is gets his diesel out of my tank (farm fuel) and my tractor (International 1066) is running fine, and I treat my diesel with Power Service octane boost. This miss is not constant either, it seems to be not getting fuel sometimes We have also taken the fuel cap off in case there was a clogged fuel cap, no change.
When you first start the tractor up it will run ok, but after you run full rpm for a minute it will miss, sometime so bad that if you roading the tractor and have to pull over and stop to let traffic by that it will die. It always starts back up ok. It also seems to run ok if you let it idle a few minutes then run full rpms.
It also seem to run ok in the mid rpm range, but since he uses pto on it usually runs it at full rpm
We felt it is not getting fuel, but you also get a smell ever once in while of what I call a “rich diesel smell” from it This problem has been going off and on for several months but as you can tell by total hours, tractor does not get used that much. We checked the lines and diesel seems to be flowing ok out of the lines. Tractor is never really stressed, it is used for shredding and I use it to rake hay with and sling fertilizer
Any ideas or suggestions
Thanks

tractorpilot · Jul 12, 2005

Just a thought - is the fuel cap vent plugged. I am just learning about diesels, but on a gas engine, this can exhibit the conditions you describe.

jinman · Jul 13, 2005

This really does sound like fuel starvation at maximum flow. You said you checked the fuel lines and fuel is flowing out. Did you check at the low pressure input to the injector pump? What about trash in the tank that might be stirred up by vibration at high speed and then settle down when you slow or stop the engine? This doesn't sound like an injector problem to me. I suppose if there was something partially clogging an injector, it might show up this way, but not very likely. I just think it's a fuel feed problem somewhere. He might have to drain and clean the whole feed system from the tank to the injector pump to find the culprit. /forums/images/graemlins/frown.gif

One other thing that is really "out there" is the fuel cutoff solenoid. If there was a loose electrical connection that was causing it to intermittently drop out at high engine speed/vibration, then that would cause the engine to stumble. Also not very likely, but it is a slim possibility.

Soundguy · Jul 13, 2005

My 7610s had a problem similar to this.. dieing.. then restarting.. lose power..e tc. It was fuel starvation. mine ended up being the fuel petcock into the tank. it has a filter on it about the size of your pinky finger.. the mesh on it is super-duper fine... ANY sediment will plug it.

One thing to look at.. when running.. does the return line to the tank have a good fuel flow.. if not. there is not any excess fuel to the injector pump..

Pull and clean/repalce that fuel strainer.. bleed any water traps you have.. prime her and re-check.

Also.. you using 'cetane' boost.. or 'octane' boost /forums/images/graemlins/wink.gif

Soundguy

meat_fire · Jul 13, 2005

Thanks for all the suggestions!!

Tractorpilot we have open the cap and run it with out it for a second going down the road did not seem to make any difference, that was my first thought and hope as that would have been an easy fix.
Jinmanm that what we are thinking that something somewhere is blocking the fuel supply. The fuel cutoff solenoid is an idea I not thought about. I know he has another probelm under his dash as his throttle linkage is not working, we have to use the foot feed to control RPM. Where is the cutoff solenoid and is there any way to test it besides checking to see if the wires are tight?

SoundGuy, Yes there is real good fuel return to the tank, it has a real good flow, I have never checked it at full throttle, maybe need to do that. How did you get to that petcock? were you able to go in from the top and clean it or did you have to take line off the tank to reach it?
You got me on the "Octane" boost it is Cetane boost LOL. I have noticed a difference running it on my 1066, I never keep good records but it seem to use less fuel for the "same type of job" than it does without using it.
Once again thanks for all the suggestions.

Soundguy · Jul 13, 2005

( How did you get to that petcock? were you able to go in from the top and clean it or did you have to take line off the tank to reach it? )

Yep.. got to pull the fuel line off... then unscrew the petcockfrom the tank.. screen is on top of it and is removeable. At least on my 7610s.. you can't see it from the tank opening.

That fuel petcock/strainer is pretty much a universal 'on-the- shelf part for most NH tractors. Whn I picke dup mine.. I glanced at the parts screen, and it listed a bunch of other tractors other than my 7610s that used that fuel petcock..

DO be carefull about the oring between the petcock and the metal hardline. it WILL pinch and leak. And you will get real practiced at pulling the fuel lines, and bleeding the system... I know I am /forums/images/graemlins/grin.gif

Oh yeah.. one more thing... keep in mind how much diesel your tank holds... I didn't notice my oring leaked till I had all 20 gallons inthe fuel tank..ARGHHH

Soundguy

jinman · Jul 13, 2005

( The fuel cutoff solenoid is an idea I not thought about. I know he has another probelm under his dash as his throttle linkage is not working, we have to use the foot feed to control RPM. Where is the cutoff solenoid and is there any way to test it besides checking to see if the wires are tight?
)

Meat_fire, I'm actually only guessing that the 3010 has a fuel cutoff solenoid. If the engine stops when the key is turned OFF, then it has a solenoid. It the engine stops by moving a cutoff lever, then the fuel cutoff is probably not a solenoid.

It the tractor has a solenoid, the way I'd check it is to use small jumper wires with alligator clips to put 12 volts to it all the time. If that clears up the problem, then I'd start looking for a loose electrical connector or broken/pinched wire. Remember, I said this has a very slim chance of being the problem. I think I'd check for clogged fuel lines like Soundguy suggested before I checked for the solenoid problem.