engine leak from block seam?

Mechanical issues? Check here.

Moderator: TechMOGogy

Post Reply
User avatar
audiocontr
United States of America
Posts: 1868
Joined: Fri May 01, 2009 1:30 pm
Location: Buffalo NY

engine leak from block seam?

Post by audiocontr »

I'm cleaning up my recent Pathfinder purchase. I noticed it has a persistent oil leak from the center of the engine bottom - right at the seam. it leaks while sitting.

I originally thought it was the round gasket for the sump cover. I cleaned and replaced that gasket, and the leak is still there. The drip comes from the flat section of casting that hangs the lowest, directly below the main pulley. I do not see any oil leaking from the main pulley, nor anything flowing from the sides... it really appears like the oil is leaking from the center seam on the bottom of the engine.

the three studs that hold the engine halves together are very snug.

I plan to clean the bottom once again, and use some talcum powder to investigate.

Has anyone had the center seam leak in the past? is there a gasket?
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
Jim LaGuardia
United States of America
Posts: 1699
Joined: Wed Apr 14, 2004 3:42 pm
Location: San Bernardino Ca
Contact:

Re: engine leak from block seam?

Post by Jim LaGuardia »

Case halves sealed with aviation sealant just like the pinzgauer. Lots of work. Best suggestion is to pin point leak and then patch with oil resistant RTV after cleaning.
I am currently repairing a 72 Pathfinder that came in boxes after sitting apart for 3 years.
Cheers, Jim LaGuardia
http://smg.photobucket.com/albums/v510/Goatwerks/
"Arch Magus of Machines."
User avatar
audiocontr
United States of America
Posts: 1868
Joined: Fri May 01, 2009 1:30 pm
Location: Buffalo NY

Re: engine leak from block seam?

Post by audiocontr »

Hey Jim! Good to see you on the forum!!! Thanks for the tip and hope all is well!!
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
Post Reply