Mahindra Max 24 white smoke issue

[Foxxygrandpa24]

So I've had my Mahindra Max 24 at work doing a little loader work for a concrete project. All has been great until it started getting a little hard to start. Worked all day and throttled fully down after letting it sit and cool off for 10 min and it died before I could hit the key. No huge problem, took the battery to a local shop, load test came back no good so I swapped it out with a new one. Perfect! Fired right up next day and ran with no issues at all until the last 3 loads of dirt. Started puffing white and kind of sounds like it's missing at full RPM. I babied it to try and get those last 3 scoops checking my gauges constantly to ensure it wasn't over heating. 2 scoops later it ran itself to full RPM from half and wouldn't shut off with the key. It will fire up beit a little slow still and it will run but it still sounds like it has a miss or something and it will smoke our shop out with white when it NEVER really even use to smoke at all.

Things I've tried:

*New battery
*New air filter
*New fuel filter is on the way
*Pulled the glow plugs to inspect them and tightened the bus between them
*Fresh oil
*Pulled the fuel shutoff solenoid and it works just as it should
*Checked my grounds
*Checked that charging system is working

 

[redman135]

It sounds like you have a dealer level problem. I have had white smoke on a tractor I was driving, and it was a "blown headgasket". DON'T try to start the tractor as you can hydraulic it and bend a con rod.
If it is a blown head gasket it is relatively cheap to fix at this point.
I am baffled by the bit where the engine went to full revs on it's own. How did you stop the engine if the key did not work?

 

[MAX-24-Dean]

Continuous evidence of white smoke indicates a possible mechanical defect, or incorrect fuel timing, defective fuel injectors, or low cylinder compression.
Water entering combustion spaces will also create white smoke. Faulty head gaskets and cracked cylinder heads or blocks are a common cause of water entry.

White smoke can be caused by raw, unburnt fuel passing into the exhaust stream.


Low cyclinder compression may be valves out of adjustedment. Attached is from Mitsubishi SL3 and SL4 engine maintenance manual, dated 2004.

 

[mini14]

When u have a run away engine Sounds like stuck open injectors.

 

[Foxxygrandpa24]

It sounds like you have a dealer level problem. I have had white smoke on a tractor I was driving, and it was a "blown headgasket". DON'T try to start the tractor as you can hydraulic it and bend a con rod.
If it is a blown head gasket it is relatively cheap to fix at this point.
I am baffled by the bit where the engine went to full revs on it's own. How did you stop the engine if the key did not work?

It eventually shut itself down after about 20seconds

 

[IndyJay]

I had similar happen with my Massey 1250... one of the plungers stuck on the Zexel injector pump, caused the control rack to freeze in WOT. Stop solenoid had no affect because it was stuck. Had to shut off fuel valve at filter.