Damp exhaust studs????

[cds70]

Recently I had a bit of work done on my 2002 NM.

Plugs
Tube seals
Cam shaft seal
Timing belt
tensioner
Water pump
Rocker cover gaskets

After driving the car and stopping it I can smell burning oil and when I had a look under the car the lower exhaust studs/nuts are damp with oil. It is certainly not running out nor could I measure how much oil I loosing, it's more the annoying smell.

Any ideas?

[Shifty]

oil might have leaked when you got the r/covers replaced? degrease them when the engine is cold. id check the r/cover bolts too, might be loose

[cds70]

I've degreased the motor and it keeps coming back. The mechanic nipped up the rocker cover bolts when I took it back so we are still trying to work out where it is coming from.

[Shifty]

ive seen the intake manifold studs leak oil on a few cars, i wonder if exhaust studs could also leak

[Pauly Faulkner]

It's been said on here before that the oil passages are close to the back of the stud bore hole and stud can potentially push through with enough force. Never seen it before so it would be a rare event.

I'd say rocker cover seal or cam seal wasn't done properly possibly.

[GC007]

Recently I had a bit of work done on my 2002 NM.

Plugs
Tube seals
Cam shaft seal
Timing belt
tensioner
Water pump
Rocker cover gaskets

After driving the car and stopping it I can smell burning oil and when I had a look under the car the lower exhaust studs/nuts are damp with oil. It is certainly not running out nor could I measure how much oil I loosing, it's more the annoying smell.

Any ideas?

I'd be looking at your rocker cover studs, it says only 3 nm but I did mine up tighter as oil was leaking at 3 nm. Same spot running down over manifold.

[mrbitchi]

It's either the rocker cover gasket or the front camshaft seal. First thing to do is nip up the rocker cover bolts a bit. They are only done up about finger tight so be careful.
If that doesn't fix it I guarantee its the cam shaft seal

[Shifty]

lower exhaust studs/nuts are damp with oil.

just the lower ones? not the top? i suggest wash it down again and watch it start leaking, if its studs they arent that hard to remove, but theres the risk of them breaking

[cds70]

Interesting.............. is it possible for oil to leak through the thread of the studs?

No sure if it's the top studs as well or just the bottom studs, but I'll have to check. As you know they are hard to get at to see.

If it's the front cam shaft seal the mechanic will have to pull it down and fix it.

[my.paj]

In the process of taking the front off my motor and pretty sure this is a cam seal.

[Pauly Faulkner]

It's normally on the bottom studs only due to the angle of the theads.
The oil will obviously trail down so when it hits the manifold and pools up and then it runs out on the nut on to the stud. Seen this dozens of times and was always valve cover or cam seal.