BuckeyeBullet
NAXJA Forum User
- Location
- Utah
After 9mos of work (mostly due to slow funding) I finished my '01 XJ 4.0 engine and started it up today for the break-in. Fired right off and ran strong but after a few minutes I shut it down. I know, I know, really bad to do that, BUT that engine sounded bone dry. I primed the oil system prior to starting using a long screwdriver on the pump shaft, everything in the engine was coated with assembly lube, double checked cam bearings were lined up with oil holes, etc. I've rebuilt engines before (but this is my first 4.0).
The engine temp was not doing anything funny, right about 210 and steady. The oil pressure gauge was pegged at 80psi. Every few seconds it fluttered but went right back to peg. I relocated the oil filter to the front of the engine bay under the radiator during the rebuild. Pulled the filter and it is seeing oil. I'm at a bit of a loss of what else to check because I don't want to start the motor again to finish the break-in unless I'm sure it'll be ok. Also don't want to waste $4500 worth of work I've spend 3/4 of a year doing. Does it sound like a spun cam bearing? Those are all new and were installed by a machine shop familiar with Jeep motors.
Kinda sounds like something is blocked to me. Should oil be visible at the rockers if I were to pull the valve cover and do the priming procedure again? Thanks for help & moral support...
The engine temp was not doing anything funny, right about 210 and steady. The oil pressure gauge was pegged at 80psi. Every few seconds it fluttered but went right back to peg. I relocated the oil filter to the front of the engine bay under the radiator during the rebuild. Pulled the filter and it is seeing oil. I'm at a bit of a loss of what else to check because I don't want to start the motor again to finish the break-in unless I'm sure it'll be ok. Also don't want to waste $4500 worth of work I've spend 3/4 of a year doing. Does it sound like a spun cam bearing? Those are all new and were installed by a machine shop familiar with Jeep motors.
Kinda sounds like something is blocked to me. Should oil be visible at the rockers if I were to pull the valve cover and do the priming procedure again? Thanks for help & moral support...