reward_1000
Registered User
I am working on this truck for a customer and am in need of some guidance. It is a 2000 3500 2 wd, 6.5l with an auto behind it. He uses this truck for his tent company so it knows nothing of an easy life. He bought the truck 4 years ago and shortly threw a rod through the side of the block. So we put in a Jasper engine all remanufactured with pump and turbo assemblies. Within 6 months the bearings in the turbo went bad so they sent me a new turbo that I installed and worked great. 6 months after that the engine developed a rod knock. Just within the warranty period so they sent me another engine that I installed for him. This one has been good up until now. We have noticed a lot of black smoke and the power is way down. It does not have any ses codes. I checked the waste gate with the engine off and the arm moves freely. I then put a hand operated vacuum pump on it and actuated the waste gate with the engine running and I can not here it spool up. I did not put a boost gauge on it to see what it was producing. When I pulled the truck in I noticed that the oil pressure gauge would sit at zero unless the rpm's were pulled up some. So I ran a pressure test at the oil filter and found that it has 20-40 lbs at idle. I noticed that the oil was very very dark. I know diesel oil is dark but this is the darkest oil that I have seen. So I decided to run some flush through it and change the oil. Oil was very black and very sticky, even after running for an hour at idle the oil was slow to run out of the drain plug. I put new Rotella straight 30 weight oil in it along with a new filter. I started it to check the oil level and found the oil is immediately very very black and tacky already. I also am 2 quarts over full after only putting in 8 quarts of oil. But after the oil change and flush the oil gauge does not drop to zero at idle. So this tells me a couple of things: I believe the engine is sludging up somehow, I do not know how as he gets his oil changed every 6000 miles. The other thing that I suspect is that the turbo is shot due to a lack of oil getting to it. Any thoughts on how this engine is getting sludge this easy? I have ordered an analysis kit and will get the oil sample sent out soon to help give me some idea. They run nothing but road fuel in it. It does have a cracked driver side exhaust manifold that needs changed but that is not leaking that much to cause the turbo to not spool up. THanks for any thoughts and ideas!