Hey guys, need a little advice. I have an 88 YJ with the 4.2 in it... this is a project semi-restoration and weekend toy Ive had for about a year. currently has 92k on the odometer. I put maybe 500-1000 miles on it since Ive owned it and oil had been changed several times.
Ive had an oil leak coming from mysterious place since I bought the Jeep a year ago. Nothing bad, just a little drip or two on the pavement and never seemed to burn oil or get low.. I figured I would address it after I finished the body work and was in the garage for this winter. Ive degreased the engine several times and It always is wet with oil again withing a few drives. I cant seem to find the leak anywhere..so Ive dealt with it as everything always has run good until now.
In the last few weeks Ive noticed the oil pressure dropping a bit after a few minute ride.. Starts up around guessing 30PSI (just under the half way point based on factor gauge w new sender) and will drop almost down to the 0 line after a 15 minute light drive. Replaced sending unit. Valve cover gasket was looking wet and decided to change it as well. When I opened the valve cover there was burnt oil everywhere... looked the drippings in my gas grill... bad. Hd the PO ever changed the oil before me? Ive tried to clean it the best I can to get the muck out with a screw driver and rags. Im guessing there is a blocked passage killing the oil pressure or a dying pump. Any suggestions on cleaning these grill crispys out, or is manually still the best way.? I also added some seafoam to the oil in the hopes it will break it down further and get what I couldnt. Im going to pull the pan this weekend and see what the pump and pick ups look like. Waiting on a new gasket. I had the pan off a few months ago and the pickups and pan all looked clean.
Here are my questions:
Any thoughts to how I should clean the old oil "crispys" out of the valve/ cover area? I wasn't sure if I could use a degreaser internally or what it would do to the rest of the motor.
Is there a way to check the pump its self to make sure still good? Ill check the pickups then too.
It was suggested that I should change the rear main seal while Im at it. I was told it was a 2 piece seal and that dropping the journal would give enough room to do this easily.Anyone done this? Can it be done easily. I dont want to attempt and get stuck and have to pull the motor.. rebuild planned for the winter time hopefully
Anything else I should check, do, or clean before draining the oil this weekend to check the pump.
Thanks
Ray
Ive had an oil leak coming from mysterious place since I bought the Jeep a year ago. Nothing bad, just a little drip or two on the pavement and never seemed to burn oil or get low.. I figured I would address it after I finished the body work and was in the garage for this winter. Ive degreased the engine several times and It always is wet with oil again withing a few drives. I cant seem to find the leak anywhere..so Ive dealt with it as everything always has run good until now.
In the last few weeks Ive noticed the oil pressure dropping a bit after a few minute ride.. Starts up around guessing 30PSI (just under the half way point based on factor gauge w new sender) and will drop almost down to the 0 line after a 15 minute light drive. Replaced sending unit. Valve cover gasket was looking wet and decided to change it as well. When I opened the valve cover there was burnt oil everywhere... looked the drippings in my gas grill... bad. Hd the PO ever changed the oil before me? Ive tried to clean it the best I can to get the muck out with a screw driver and rags. Im guessing there is a blocked passage killing the oil pressure or a dying pump. Any suggestions on cleaning these grill crispys out, or is manually still the best way.? I also added some seafoam to the oil in the hopes it will break it down further and get what I couldnt. Im going to pull the pan this weekend and see what the pump and pick ups look like. Waiting on a new gasket. I had the pan off a few months ago and the pickups and pan all looked clean.
Here are my questions:
Any thoughts to how I should clean the old oil "crispys" out of the valve/ cover area? I wasn't sure if I could use a degreaser internally or what it would do to the rest of the motor.
Is there a way to check the pump its self to make sure still good? Ill check the pickups then too.
It was suggested that I should change the rear main seal while Im at it. I was told it was a 2 piece seal and that dropping the journal would give enough room to do this easily.Anyone done this? Can it be done easily. I dont want to attempt and get stuck and have to pull the motor.. rebuild planned for the winter time hopefully
Anything else I should check, do, or clean before draining the oil this weekend to check the pump.
Thanks
Ray