Pulling the Heads on a 6V92 Turbo

[Bus Busted]

The trouble head is off and here it is. I think the look bad like they need a trip to the shop. Note the build up on the bottom of the valves. (pic 1) Not sure if the 2nd pic shows any thing helpful. The 3rd shows where the leak was at the bottom of the picture. And the 4th is a close up of the leak area. not seeing any cracks, just the stain. Will need to do some thinking, reading, searching, and phone calling. I think I might be looking at a rebuild.

[buswarrior]

First thing at Big Transit here is a trip to the Jenny room, for a high pressure, hot water and soap bath, before any engine work is started.

Once you've used a pressure washer with over 4000 lbs of spray available, and with hot water in it, it is VERY hard to go back to anything less.

Careless use of the trigger will whip the wand into your face.

I have a design forming involving the use of a spare Webasto, a drum of water and a gasoline engine powered pump...

happy coaching!
buswarrior

[Brassman]

Off hand & looking at your pictures, I'd say it was way past time to replace those injectors.

[artvonne]

  Im not seeing a lot thats wrong. With a coolant leak breach into a cylinder, that cylinders combustion chamber should be cleaner than the others due to steam. While it doesnt look like it was running "great", all three cylinders appear (to me) to be roughly equal. Whats the other head look like??

[luvrbus]

Jon, you getting water from somewhere, after cooler, injector tube,liner o-rings or cracked heads  looks to have a few miles on the engine

good luck

[hargreaves]

I would pull the other head as well. the coolant passage "O" rings are probably in the same shape.

When cleaning the "O"ring recess in the block check the depth of the recess, there is a maximum allowable depth. Don't have it off hand but it is the manual. We used to have our machine shop machine the surface and use oversized "O"rings.    Good luck   Gerry