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I meant cylinder liner!

There are machines you can buy to pressurize the cooling system (through a special radiator cap, with a compressed air source and regulator). Then you can look with the oil pan, valve covers etc removed, where the water is coming from. Awful job :(

Water in oil, Could be the oil cooler also

Darn. I have bought engines full of water and still salvage them. I don't know why people are so quick to scrap stuff

I do think a fresh engine is a lot more sensitive about adverse conditions than a worn engine. Everything is tight so any rust from sitting will have more potential to seize something Btw were you saying those 400's are for sale?

15/40 in an allison?? First time I have ever heard of that. I was very pleased how mine shifts, pretty comfy just like transit buses etc

Oil and water mixing sounds like the piston skirts. If it only had water in the oil it could be from condensation or something being open. That deutz I have is aircooled and it also had water in the oil :-)

I don't know the history of my truck. It has only 1000 miles orso since the rebuild 20 years ago, but I don't know if that means it was driven 1 mile a week or what.

neat, I was just about to ask for an Android app but looks like tapatalk works on android as well, I'll buy it. having a smartphone app really helps so you can use those few idle minutes here and there to scan the forum and pitch in

I recently bought a M925 and it seems to do very well. The super singles with big nobs and the detroit lockers seem to be a good combo. I haven't pushed it yet though. I have some stock tanks that have very muddy clay bottoms, should try it out.. debating whether I should hook up the winch in...

I saw that! I'm going to check that out before ever hitting ebay! :-) I want to disable the injectors one by one to see which cylinder we're dealing with here. The only common rail engine I have worked on is a 8V92 DDEC-II ..

This M925 is around 15k miles so it shouldn't fail regardless of whether it was rebuilt. I'll check the serial# in the morning. This other engine that had the sticking valve, a Deutz V12, had been out in the weather and was seized when I got it. I got it to run and it idled great, then when I...

good point, maybe it's an injector?! If it was dumping fuel it could make the engine rattle and smoke. I need to pick up a technical manual so I can work on it effectively. I have more experience working on diesels with the Bosch/stanadyne style fuel systems. Granted I have a dump truck with...

Hi ! New member here. I've been reading the forum for a while now, as the big military trucks have always interested me, and I like the amount of real technical know-how you guys posess. A few weeks ago I purchased an M925A1 - NHC250 (855) cummins, 5-ton, hydraulic winch, super singles. It is an...