i just recently found oil on the center lower stud/bolt that connects the exhaust manifold to the cyl head. Nothing above it or below it... just the stud coming out of the head is soaked in oil. STRANGE... its like its leaking from the hole where the stud resides? Has anyone experienced this? Is there an oil galley/passage that runs near the exhaust manifold studs in the head? Could it have possibly cracked leaking oil to it? No visible cracks on the head and its not like this stud is sitting any deeper than the rest. Was never over torqued either.... just really weird.
No ill effects yet... but i can't see how this could be good...


-Tom

 

i had the same problem...so i replaced the studs and used teflon tape on the threads that go into the head....hope this helps

 

could it not be the gasket wearing out possibly??

 

The exhaust mani studs are threaded thru the head and into a oil gallery. There is a pic somewhere on evom proving this.
Just put some high temp sealant on the stud and put it back in.

 

i had a worry about this as well. glad i came across this thread!

 

They are correct. Ask me how I know.









Mine for some reason were loose.

Gave each one a good turn or two, have not had the problem since.

 

Yeah, I had the same issue. I recently installed a new ported mani/ix turbo/02 housing and put new studs in with some high temp sealant. Haven't had the problem since!

 

Thanks Guys!! I fixed it by retorquing the stud/bolt. its not leaking anymore. What an odd thing to do... the stud go through an oil galley? Anyways.. good to know now!

 

will this cause any performance loss?
mine is worse than the pictured above...
i don't know whether i should torque them or not...

 

i just had the same proplem and the oil gose in fire and A cloud of white smoke when i open the bonnet i fund this studd is out i was thinking my blok is crash. but thank for evom it's have the anser for any proplem

 

I hAve a similar problem. But its near the timming belt back cover and the lower part of the manny also near ghe timming. Any idea? I will post a picture soon!!

 

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i retorqwue the nuts, and i found out that the 12mm neasr the 14mm on the picture had bad threat. so it doesnt make any function to press the mani. could that be my problem?

 

JUST REMOVED THE MANNY AND FOUND MY GASKET FULL OF OIL.. AND THE STUD NEAR THE 14MM NUT WUTH 12MM NUT WAS LOSEN ( TIMMING SIDE) . I WAS WONDERING, WICH OF THE LOWER STUD RUN INTO THE OIL PASAGE? sorry for the capls.. i have the caps lock on.. stupid fingers any help?

 

I used Red Loctite and never had an issue. I had the same problem when I first bought my car, I thought the head gasket was leaking.