3 replies to this topic

[BlackBrick]

Spent the last few weeks chasing oil leaks down the exhaust side of the engine and oil pan:

I found leaks from the following four places:

1) Turbo return line - I replaced the oring and seal
2) Rear cam seal - I replaced the cam seal
3) PCV hose under the spark plug cover was leaking, puddling oil on the head and dripping down the back through the weep hole - I put a better clamp on the hose.
4) The oil pan bolt wasn't torqued down all the way - I torqued it.

All four of these areas have stopped leaking, but there is STILL a small leak!

5) The elbow vacuum hose that connects the PCV system to the PTC valve had a tear in it, and it looked like a lot of oil vapor had collected all around that area. I had another elbow that fit and replaced it.

I'll check in a few days, I HOPE #5 was the last leak.

Question - would a tear in that vacuum hose cause oil to leak from it? I assume the oil vapor coming from the PCV system could find it's way out?

[gilber33]

BlackBrick, on 25 May 2012 - 03:45 AM, said:

Spent the last few weeks chasing oil leaks down the exhaust side of the engine and oil pan:

I found leaks from the following four places:

1) Turbo return line - I replaced the oring and seal
2) Rear cam seal - I replaced the cam seal
3) PCV hose under the spark plug cover was leaking, puddling oil on the head and dripping down the back through the weep hole - I put a better clamp on the hose.
4) The oil pan bolt wasn't torqued down all the way - I torqued it.

All four of these areas have stopped leaking, but there is STILL a small leak!

5) The elbow vacuum hose that connects the PCV system to the PTC valve had a tear in it, and it looked like a lot of oil vapor had collected all around that area. I had another elbow that fit and replaced it.

I'll check in a few days, I HOPE #5 was the last leak.

Question - would a tear in that vacuum hose cause oil to leak from it? I assume the oil vapor coming from the PCV system could find it's way out?

Well, there is no vac line connecting the PCV system to the PTC. There is a vac line on the PTC that goes to a vac source (vac tree or a nipple on the side of the intake manifold). The large hose on the top of the PTC goes to the top of the flame trap. If the vac line on the PTC was torn, it would be possible for blow-by that would otherwise go back into the intake pipe to get escape out of the vac line since it is below the hose from the flame trip to the PTC.

[831t5r]

Have you serviced your PVC system, make sure it isn't clogged causing all these leaks except the loose oil pan bolt.

[BlackBrick]

ok, sorry, i meant the vac line from the intake manifold to the PTC has a tear in it.

Yes, I redid my entire PVC sytstem about 4 years ago. Unfortunately, I bought the URO parts version, back when I didn't know better. Hence the worn out part already.

I'm hoping the blow by is escaping and causing the oil leak, otherwise I'll be chasing down a 6th oil leak soon! If it is the blow by, at least I know the PCV system isn't clogged ;0)