I have searched the forum and have found several posts about similar issues, but none that are exactly the same as mine. M6800 4x4 with cab and loader. When starting the tractor the tractor will start when the key is in the start position and die when the key is returned to run. It will do this 4 or 5 times. after 4 or 5 times of this the tractor will start and run fine, until you shut it off and then the process starts over again. If i hold they key in start during this it will continue to run but die when key is returned to run. no amount of fiddling with the key or throttle input changes the process, it always takes 4 or 5 times maybe 2 or 3 occasionally after the tractor run for a while. i have checked and the vents are not clogged, changed fuel filter, previous owner replaced shut off solenoid a while back but that didn't fix it (not opposed to buying another to try). tractor has been like this for a good while and i cant seem to figure it out.
M6800 starts and shuts off repeatedly
- Thread starter golstho
- Start date
GreensvilleJay
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BX23-S,57 A-C D-14,58 A-C D-14, 57 A-C D-14,tiller,cults,Millcreek 25G spreader,
curious, so looked at parts drawings. seems to have a mechanical 'lift ' pump. If it's worn out, could cause the problem ??
Russell King
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L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Sounds like the run solenoid (or stop solenoid) is not being able to hold the fuel open when the key returns to run.
Research what solenoid is near the injection pump and how it operates and see if it is working correctly or not.
Research what solenoid is near the injection pump and how it operates and see if it is working correctly or not.
when the solenoid is removed it seems to work properly, but i am wondering if somehow it works when removed but not installed (don't know if that is even possible). been reading about a time relay in the dash possible being the problem but not sure how i would diagnose that part.
I don't have access to a WSM for your rig, but it probably has the dual coil fuel solenoid with pull-in and run coils. It has all the symptoms of run coil drop-out. You say the solenoid has been replaced, so it is probably ok. You could have a bad connection or key switch. Clip a test bulb on the run coil and watch it. Even a momentary blink when the engine dies indicates a power drop, and it won't pull back in.
North Idaho Wolfman
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M6800 can have 2 different electrical systems and they affect the key stop relay and solenoid differently.
The stop solenoid has 2 coils internally one coil for pull in and one coil for hold.
sounds like the pull in coil is working but not the hold coil.
The issue may or may not be the actual solenoid it could be the solenoid relay or a wiring issue.
Give me the serial number and I can narrow it down on what to look at and where tolook for voltage or not.
The stop solenoid has 2 coils internally one coil for pull in and one coil for hold.
sounds like the pull in coil is working but not the hold coil.
The issue may or may not be the actual solenoid it could be the solenoid relay or a wiring issue.
Give me the serial number and I can narrow it down on what to look at and where tolook for voltage or not.
Just unplugged solenoid wires and tested with meter. Battery voltage 12.5v. both wires are red with white stripe one is larger than other. Both test exactly the same around 9.8v when cranking over the engine, then jump up to 12v when key is returned to run, they stay at 12v till the timer in dash clicks and then drop to nothing.
North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Well that's not right...
You should not have voltage on both all the time.
Remove the solenoid and see if it will start and run.
Also while out I tested the solenoid again and it doesn't always function properly. On start it pulls in Everytime, but when key is released to run sometimes it stays in until the timer goes off and sometimes it pops out as soon as they key goes to run. Also looks like the wires have been spliced before using crimp connectors. I would like to remove these and solder in but not there is not much wire to work with and can't really get behind engine.
North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
So we're on the right track.
Right now it could be the relay, main switch or the solenoid itself.
Is it a new solenoid?
Let me study the wiring path a little later and I'll tell you where to check next.
Right now it could be the relay, main switch or the solenoid itself.
Is it a new solenoid?
Let me study the wiring path a little later and I'll tell you where to check next.