1994 GMC K1500, 350 engine. New engine about 5-6 years ago. Maybe 45k on motor. Oil pressure gauge was low. My mechanic put it on a mechanical guage. At cold start-up, it reads 40 lbs. As it warms up, pressure drops to 6-8 lbs.
What are the possible causes? Mechanic did say that he could hear the start of a "tick" in the engine. I think that the plan is to check the bearings for starters.
Any other advice?
What are the possible causes? Mechanic did say that he could hear the start of a "tick" in the engine. I think that the plan is to check the bearings for starters.
Any other advice?