LPOP gushing oil

[MattDaddy56]

Went outside & fired up the truck only to find oil gushing out of the low pressure oil pump. Once the truck heated up it stopped. My pressure is still within the normal ranges. I'm assuming one of the seals has gone bad where the pump mates up. Anyone ever had this happen? Seems weird that it would stop upon warm up.

[mojoman]

sure its not your oil cooler o-rings????


when they age they get brittle...when motor is cold the lose their seal...when motor warms up they expand and seal...just did mine...easy enough...just finiky to get back in...gotta go thru the fender skirt to access the front header bolts....hth

[Patrick Feeley]

Is the leakage coming from the LPOP housing to front cover joint, or coming from the crankshaft front seal? The LPOP housing is sealed to the front cover with an o-ring, but I've never seen any other posts regarding that seal leaking. As mentioned above, it's more coomon for the oil cooler o-rings to leak. Cheers!

[MattDaddy56]

Looks like my original post was incorrect. It's leaking from the oil cooler cylinder where it mates up in the front.

[MattDaddy56]

Oil cooler now has all new O-rings. $33 for the set of 4 at the Ford dealer. I can't believe how hard and brittle the old ones were. Getting the oil cooler back in there was a little tricky, but with some patience it all went well. I took some pics of the repair, but didn't post them because it seemed pretty basic. Thanks for pointing me in the right direction with the oil cooler. Don't know why I thought this was the LPOP, but live and learn I guess.