Hi,
I rebuilt my 12v cummins 2 years ago. I had a overheating problem. I could drive up a grade with no load and it would get too hot. I don't know why. Was it the veggie oil heating system I put in? More capacity coolant? Was it because of bad injectors? Was it bad timing? Was it because I had a non stock aluminum radiator in it?
Anyway, I pulled the engine, flipped it over and saw in the #1 cylinder that the cooling nozzle appears to be broken off flush with the metal hole it is inserted into. I'm thinking it broke off someone, but I never saw anything in the oil pan. It could have drained out without me seeing it. Anyway, I'm so disappointed how much effort it is to take the crank out and put in new nozzles. I figure about 8 hours work.
Do you agree that I should fix this?
The other 5 nozzles are sticking out of the hole about an inch.
One guy said in the cummins forum that the piston cooling nozzle in piston 1 or 2 looks different than the others. that is may look broken off flush with the end of the hole.
Can anyone confirm this?
meanwhile I and putting in new valve stem seals, etc to fix the oil smoking problem, and now this PCN issue.
Should I try to stick a little brush in the cooling nozzles and clean them out?
should I go ahead and pull the crank and replace them.
What say ye?
Your help is much appreciated!
Thanks
Dean
805-628-6221