North American Turbocoupe Organization



Leaking oil
TCtbird88 Offline
Junior Member
#1
Hello I'm trying to figure out where my Tbird might be leaking oil from. I stumped. It's leaking alot and I'm trying to figure it out so I can start driving again. It doesn't leak while idling only when I drive it. I cleaned everything up and figured out the area its coming from but can't seem to figure out exactly the spot because oil get all over. It's coming from above the oil filter. Anyone here might have an idea? I check all the clamps and hoses best I could. Also I'm wondering if it's normal when the car is running and you remove the oil cap the engine starts running like it has a vacuum leak.
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BogusSVO Offline
Member
#2
you may have loosened the extension bolt that passes thu the oil cooler to the block, during a oil filter change.

or the O ring for the oil cooler could be failing.
Owns more Turbo FORDS than the law should allow....and still getting more

85 TC going under the knife
84 Turbo ranger --($800.00 ebay) Redneck work truck
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TCtbird88 Offline
Junior Member
#3
Ok I'll have to check that out. When I was looking under the car the oil filter was tight. Also where is the I ring for oil cooler
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Pete D Offline
Administrator
#4
The gasket (not an O ring, can actually use an gasket from a new oil filter, of the right size) is behind the oil cooler assy. Take the extension bolt out. On rare occasion the oil filter can rust out so check that also.
Pete Dunham


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TCtbird88 Offline
Junior Member
#5
I will check this out but I'm not to sure if that's where it's coming from unless it's spraying out from there. It looks like it's coming from above the oil filter. Everything above it is wet
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Pete D Offline
Administrator
#6
I meant to say rarely the oil "cooler" can rust out and leak.
Pete Dunham


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TCtbird88 Offline
Junior Member
#7
Is there anything else I can check that might be the problem? I know it's not the valve cover. It's bone dry in that area.
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bigbillhell's Offline
Junior Member
#8
My dipstick tube got removed from it's "port" and started spewing oil all over the exhaust. Try looking down from up top and giving the dipstick tube a shake. Maybe you'll find that it's loose like mine?
Nevermind just re-read the original post and this clearly isn't the oil filter area. Worth a check anyway?
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anasazi4st Offline
Senior Member
#9
My TC has an odd condition in which in spews oil out the top of the dipstick tube, when the dipstick is in place with the engine running.

I've checked all the usual suspects (PCV valve, etc.) and don't know what the problem is. I have no other oil leaks, dash gauge shows good pressure (fairly accurate I would surmise).

The odd thing is, I made a plug from a piece of small diameter hose and the rubber bulb from the top of a medicine dropper, pulled out the dipstick and capped off the tube with this plug. Not a drop of oil has ever showed up inside it. Hmpf.

So, at this point I just keep that on there...when I want to check the oil I just uncap the tube, put the dipstick back in, and afterward replace the plug.

Perhaps you have the same condition? I know I was mystified then frustrated then angry when I found oil all over the oil cooler and that area. That's how I fixed it--at least, for now. Perhaps eventually I will look harder at fixing it for good.
Another proud dues-paying member.

1987 Turbo Coupe w/T5OD, 8.8 axle, grey smoke; most options. Got it in 1991 with 41K miles: 3 turbos, 2 heater cores, 1 T5OD full rebuild, 5 clutches, 1 head gasket, 2 Teves II ABS units, etc. later....
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TCtbird88 Offline
Junior Member
#10
Do you have a picture of this fix
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