Need some advise as I have a truck
that smokes and the oil pressure drops to zero after a brand new oil change. Let me give you some history.
So I bought this truck in November for $3000. Ran good, no smoking. Had 165,000 mile. Nice truck. Noticed the water temp would not get above 130. Figured I would eventually change the thermostat. I changed the oil about a week after and noticed it was burning oil. My father-in-law has a 2000 Ram
and he is a diesel mechanic and has worked on his truck many times and said it is most likely the plenum plate. So I order the Huges plate and a thermostat. Great company btw. Yesterday we put in the thermostat and plate but once we has the intake off we were shocked to see an unbelievable amount of carbon build up. So much that oil could not drain properly to the crank case.
We cleaned it the best we could with a shop and vac brake cleaner. The plate looked pretty good. No sign of blow out and looks like the gasket was pretty new. We think maybe the person who did it didn't bother cleaning it out. That carbon had been there a long time. So we button it up. Fires up on 1st crank. Change the oil. And now the oil pressure drops after driving and is clicking right after start up. Only for a few seconds We checked the oil sensor. Seems fine. Any idea's what to try next? It runs fine. Idles fine. No knocking or pinging under power. I love this truck. It is my 1st truck. I want to make it better. Any suggestions would help. BTW... the thermostat was stuck open and we think maybe the engine never got hot enough to burn off the carbon. Thanks