My gal's YJ's oil gauge would always max out. The needle would just peg to max no matter what I did. I figured it was a sending unit and never got around to fixing it. Well this morning we were driving and she had no oil pressure at all. The gauge didnt show any. At one point it showed just a hair above zero but then it was back to nothing. What could cause this? The other thing that bothers me is that oil is now all over the oil pan, tcase skid, rear axle and their are traces of it on the leaf springs and gas tank skid. What could cause this? 93 yj with a 2.5 and ax-5
THERES OIL EVERYWHERE!!
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Tug-n-pull
New member
Have you checked the oil? Do this first. Pressure wash the engin and bay then look for the problem! Something had to have given way to the pressure. My ol YJ always had to much oil pressure on the gauge as well. But nothing like that. Good luck tug
Bounty__Hunter
Super Moderator
Re: Meet The Jeepz
Most likely building too much pressure in the crankcase forcing oil out the path of least resistance, usually the dipstick and rear main seal. Commonly caused the the CCV system not working correctly.
Find the two large vacuum lines connected to the valve cover, one to the airbox and one to the base of the throttle body. Pull the line from the airbox, it should be pulling air from the airbox into the valve cover. Reattach and pull the large line at the valve cover that comes from the base of the throttle body. This line should be pulling vacuum from the valve cover into the intake manifold. Your CCV system is not functioning properly if your crankcase pressure is not flowing in this direction. Let us know.
Most likely building too much pressure in the crankcase forcing oil out the path of least resistance, usually the dipstick and rear main seal. Commonly caused the the CCV system not working correctly.
Find the two large vacuum lines connected to the valve cover, one to the airbox and one to the base of the throttle body. Pull the line from the airbox, it should be pulling air from the airbox into the valve cover. Reattach and pull the large line at the valve cover that comes from the base of the throttle body. This line should be pulling vacuum from the valve cover into the intake manifold. Your CCV system is not functioning properly if your crankcase pressure is not flowing in this direction. Let us know.
Bounty__Hunter
Super Moderator
You've got a vacuum obstruction somewhere, most likely on the vacuum line from the intake manifold/throttle body to the front drivers side of the valve cover. Make sure that line's not collapsed and that the brass fitting where it connects to the valve cover is clean, especially the small pinhole in it. Pull it off the valve cover end and see if there is vacuum.
When the CCV system is working correctly, crankcase gas will be pulled into the intake manifold from the front of the valve cover, and the crankcase will pull fresh air from the airbox into the back of the valve cover.
When the CCV system is working correctly, crankcase gas will be pulled into the intake manifold from the front of the valve cover, and the crankcase will pull fresh air from the airbox into the back of the valve cover.
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