Join Date: Dec 2012
Location: some where in the middle?
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E99 f-250 Cant find oil leak driping down back of oil pan?
I have been chasing an oil leak for a long time now?? I only have the oil going down the back of the oil pan and it comes down the transmission to the middle of the transmission then drops also very important only leaks at shut off!!! 4 drops every time does not leak while running at all. And does not come out immediately only comes out as it sits so will say in 10 minutes 4-9 drops every time the truck shuts off.
Things I have fixed:
-Tightened the oil pan dipstick nut the giant one that the dipstick goes into the oil pan.
-Turbo pedestal upper and lower O-rings.
-The Exhaust back pressure piston valve that hooks up to exhaust.
-Valve cover gaskets both sides.
-Cleaned and tightened all boots and silicone couplings.
-Made sure the CCV was actually connected into the intake.
-Tightened all oil pan bolts.
-Checked the oil galley plugs I see seeping but no dripping or leaking more like oil splashed on it?
Also I pretty much tightened every bolt I could see not over torqued but made sure they were tight. But here is the other thing I have done. I have cleaned out the valley where there is no oil left at all then there is oil after I start it in the front middle and back of the valley not a lot but enough to see there are puddles in each location and it never over flows it's just there not plugs or sensors are seeping or leaking and what gets me is it is in all 3 locations does the metal pores store oil then it comes out?
So I have come to the conclusion that I'm losing my mind LOL JK do you guys think it could be the rear main seal leak? the turbo leaking but doesn't have major signs when I took it out? or could it be built up oil seeping from boots from the CCV or are there hidden oil lines back there because I'm not sure what to do next I think I just might take transmission off and look but hopefully someone says o ya there is a screw in the back LOL.