My 1967 f100 has the 352 engine and it is leaking oil from
somewhere at the back of the oil pan. I thought it was coming
from the oil pan its self but someone from this site said it
most likely is my rear main seal. If this the case would not
my fly wheel be covered with oil . After taking off the cover to
the fly wheel I find the fly wheel perfectly clean and a total
lack of anything messy. If this is the case could I be lucky
enough to have only a pan gasket leak. Thanks in advance for
any help with this problem.

 

[font color=red size=2]It is possible it is coming out of just the oil pan. Did you check the rear of the intake? FEs are notorious for leaking oil out the rear of the intake and it would run down the back of the engine and the front of the tranny, making it appear it is the oil pan. Be sure and check that...

Just a thought.

Marty
"Cleverly Disguised as a Responsible Adult"[/font]

 

The separator plate will keep most of the oil off the flywheel. Look closely at the bottom edge of the plate to see if the oil drips off there.
Eric

 

How many miles are on it? Those 352's only lasted so long and then......oil all over. How do you like your 67? I am thinking about buying one to restore. Have you heard of any major problems with that year? Jim

 

Just hope it’s not coming from the cam plug or the oil gallery plugs in the back of the block.

Barry

 

I believe there is a drain between the engine and transmission that would allow oil from a leaky main seal to escape without messing up your flywheel. This is so the cluctch won't slip and/or catch your truck on fire.

Leaky intake manifold seal-look for oil on top of the bellhousing. Should be a telltale sluff of oil from the bottom of the intake.


Leaky oil pan seal-look for fresh oil on oil pan bolts or dripping from the crease on the outer edge of the pan.

Leaky rear main-start the thing up, then look for oil dripping
from the rear of the engine.

The design of the rear main seal on the FE means that it
must be installed carefully so there is no leak from the seal itself or from the cap-to-block seal (those lousy ropes). Also, the rope seals must be correctly placed to ensure a good oil pan seal.

If you change the rear main, get the kit from Felpro or a similar design that uses rubber seals in place of the stupid rope seal. I changed the rear main on my Galaxie with the engine still in the car. Put one of those stupid rope seals back in that way, too. Don't know if you can do that in a pickup, too, but I can't see where it would require pulling the motor as long as you can get all of the oil pan bolts out and get the pan out of the way enough to get a new gasket in there.

 

I forgot: it's a good idea to clean your engine, then hop in and go for a short drive before looking for leaks. Makes them show up much better. And although these engines are known for leaking, their design doesn't mean you have to put up with the leaks. If you really want to stop problem leaks, use vinyl trim adhesive in place of gasket sealer (use it in conjunction with normal gaskets and follow instructions on the spray can/tube/whatever). Woe be to the poor mechanic who has to take your engine apart after you do this; however, it will stop up the peskiest leaks but good.