My Buddy drove off in a 923, and didn't do a good check of the fluids. It got hot, discolored the paint pretty bad on the heads and down a couple inches on the top of the block. I got it started later, there's coolant in the engine oil, it makes quite a bit of white smoke, has a dead miss on one cylinder. Any ideas? seems like it may have dicked up the cups in the injectors, and maybe a head gasket?
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NHC-250 Engine Troubles
- Thread starter Barron
- Start date
- 12,196
- 314
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- gainesville, ga.
at least, maybe a cracked head, or worse, getting it that hot, 855s DO NOT like heat
AMGeneral
Well-known member
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IF it got hot enough to discolor the paint on the heads and the block,it's probably got a future as a boat anchor without a complete tear down and rebuild.
If it sounds like the rods are knocking,I would NOT run it ,they may decide to make an exit hole somewhere.
If it sounds like the rods are knocking,I would NOT run it ,they may decide to make an exit hole somewhere.
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papabear
GA Mafia Imperial 1SG
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Yup...gotta inside and do the deed...or replace.
I agree, it was a pretty stupid deal. I think the block had a cold leak and the coolant had drained down over time sitting. It was dark when he was driving it so he couldn't see the gages too well.
A crate motor is on the way, sounds like the best idea at the moment.
A crate motor is on the way, sounds like the best idea at the moment.
- 12,196
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- gainesville, ga.
always have a flash light with you, use among other things, watch dash gages at night, in case bulbs die,ect.
An awfully expensive reminder to carry a flashlight, I must admit. We had several of these engines
in our Versatile farm tractors on the farm in KS, and they were bulletproof. They'd go 7500 hours before they ever needed work, and that was pulling at full load and 2100 rpm all day.
in our Versatile farm tractors on the farm in KS, and they were bulletproof. They'd go 7500 hours before they ever needed work, and that was pulling at full load and 2100 rpm all day.
R Racing
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Im thinking blown head gasket at the least. Was it a hot day? It normally takes alot to get a cummins 250 to over heat.
- 9,576
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- Dickson,TN
The lower end could very well be ok. The knock is more than likely coming from a piston or wrist pin. Heads could be toast.
I'd say the engine could be salvageable with new heads and a piston and sleeve kit.
I'd say the engine could be salvageable with new heads and a piston and sleeve kit.
- 12,196
- 314
- 0
- Location
- gainesville, ga.
I would guess it is in need of a total rebuild, with the color change down into the block, it was so hot that the oil was VERY thin, oil pressure was about O, means bearing are toast, rings burnt (blue), cam history, cracked heads, ect, ect, the 855 will run about for ever as long as thay do not get REAL hot and oil pressure hept up, do one , it is fixable, do both, it is pretty much junk, cheaper to buid another engine
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Know that is some sad news!!!
wreckerman893
Possum Connoisseur
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There are hundreds of M931's coming out of Camp Shelby...some are going straight to the scrapper.....you may be able to get a good running engine for scrap price.
DAS
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RULE ONE......daily....check oil-check coolant.....hard lesson....DAS