Jump to content

Seepage of Oil


Recommended Posts

I was checking things out after a drive and found a bit of oil saturating the area around where the transmission mounts up with the engine. It's not actively dripping but it's pretty wet. Is this common for an older car or should I be budgeting new gaskets and seals? This car is newly in my custody and I'm trying to assess the problems.

Oily Discharge.jpg

Link to comment
Share on other sites

I would make sure where it's coming from before you start tearing it apart, unless you're planning on overhauling the engine. It looks like it may be coming from further up, like the rear seal between the intake manifold and the valley, or the oil pressure switch/sensor.

 

 

“If you can't explain it simply, you don't understand it well enough.”

--Albert Einstein

 

Link to comment
Share on other sites

From that photo, it could be a lot of things. Judging by the oil on the block, it's a safe bet you can start with a set of valve cover gaskets. If there's a puddle of oil on the top of the block behind the intake, then as DonC noted, your intake gasket and/or oil sensor are suspect. Beyond that, you'd need to clean it up well and then ascertain where the oil is coming from. 

 

 

Link to comment
Share on other sites

Thanks for the tips. I’ll try and take a look in the next few days. The engine has 98,000 miles on it and it hasn’t been driven often for the last 20 or so years. I am betting it’s going to need a little more work than I had hoped for.

Link to comment
Share on other sites

1 hour ago, Captain Morgan said:

Thanks for the tips. I’ll try and take a look in the next few days. The engine has 98,000 miles on it and it hasn’t been driven often for the last 20 or so years. I am betting it’s going to need a little more work than I had hoped for.

I have the same thing going on it was the rear gasket on the intake manifold. It's original and believe it was cork material. Was gonna to replace just the intake gaskets but now I'm thinking I might have engine rebuild and the tranny.  I'm keeping the car and nothing been done since it was built in 72. 

Link to comment
Share on other sites

2 hours ago, cv_72mustang said:

I have the same thing going on it was the rear gasket on the intake manifold. It's original and believe it was cork material. Was gonna to replace just the intake gaskets but now I'm thinking I might have engine rebuild and the tranny.  I'm keeping the car and nothing been done since it was built in 72. 

That is exactly my situation as well. Since I’ll have to change the gasket, I have been wanting to replace the intake manifold with an Edelbrock Performer and a 4 barrel carb. I’m going to dig into it in the next few days. I’ll let you know what I find.

Link to comment
Share on other sites

I had a similar situation which progressed to  some actual oil drips.  For some time I assumed it was coming from the lower part of the engine and was expecting a big issue.

As Don mentioned, in my case it was only the oil pressure sending unit located just behind the intake manifold on top of the engine.  Replaced and tightened and no more seepage or leaks!

  • Like 1
Link to comment
Share on other sites

Just an update. From what I can tell, it looks like the oil is coming from the valve cover gaskets. If this is indeed the culprit, I can live with that problem. Now my transmission... that’s another story. 🤦🏻‍♂️

Link to comment
Share on other sites

As far as your transmission, if it is an FMX, chances are it is leaking from the shifter seal.  There is a complete step by step on how to replace this seal and respective o-ring in the maintenance section of this web site.

Mac

Link to comment
Share on other sites

  • 2 weeks later...

One thing you mentioned was the mileage on your engine. When you had the valve covers off did you find any pieces of black hard rubber laying in the head. Did you look through the valve springs at your valve stem seals. They get hard and brittle with age. The pieces can get in oil pan and block the oil pump screen can get into oil pump on some models and either lock it up braking the drive shaft to it or can lock up the pressure relief valve and explode the oil filter. You can change the seals without pulling heads but not super easy. You hold valves closed with air pressure and special tool to compress the springs and remove valve keepers to get to the seals.

When a man is in the woods and talks and no women are there is he still wrong??:P

David

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...