Oil dripping from exhaust manifold stud

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spandit
Posts: 660
Joined: Tue May 18, 2010 5:15 am
Location: East Sussex

Oil dripping from exhaust manifold stud

Post by spandit »

I've always had a problem with oil leaking out of the manifold stud on cylinder 4 (the stud closest to the chassis). When I took my manifolds off the other day, found that some bozo had jammed a 10mm stud in there, obviously not realising the cylinder head had Helicoil inserts in it. I replaced the insert and fitted an M8 stud. However, it's still leaking quite badly - should this be stopped by the gasket (new) or is the head punctured in some way?
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Robin

Pinzgauer 710K
MegaJolt ignition
(upgrading to MicroSquirt)
Winter Beater
Posts: 119
Joined: Wed May 12, 2010 1:51 pm
Location: Denver, Colorado

Re: Oil dripping from exhaust manifold stud

Post by Winter Beater »

Is the drip from the stud directly or could it be the oil return line has a bad seal and the oil gets blown onto the manifold?
spandit
Posts: 660
Joined: Tue May 18, 2010 5:15 am
Location: East Sussex

Re: Oil dripping from exhaust manifold stud

Post by spandit »

Directly from stud - you can see it dripping
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Robin

Pinzgauer 710K
MegaJolt ignition
(upgrading to MicroSquirt)
Winter Beater
Posts: 119
Joined: Wed May 12, 2010 1:51 pm
Location: Denver, Colorado

Re: Oil dripping from exhaust manifold stud

Post by Winter Beater »

Sounds like the previous owner drove the oversized stud through the head into the lifter area. My heads are already reinstalled otherwise i could check to see if that actually possible. The lifter area has oil pumped into it and it returns through the lower tube. Tube seals can leak that is why I asked about the exact location of the leak.
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waterdog
Paraguay
Posts: 253
Joined: Tue Jul 05, 2011 7:35 pm
Location: Paraguay

Re: Oil dripping from exhaust manifold stud

Post by waterdog »

old posts i guess..... but did you fix the problem?? found the culprit?? i have the same leak, i need some pointers...
1985 710MS
1985 712MK
1988 PAJERO CAMEL SPECIAL 042/150
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