XC70 Oil Leak

Post by **SniperCat** » 28 Sep 2010, 09:37

Okay.... I hope it's not the Rear Main Seal.... To help me narrow down the location of the leak in my 17 year old daughter's car....
1. It just started leaking 2-days ago.
2. It's not "shooting oil" so I do not think it's oil under pressure.
3. It does seem to be isolated to the back of the the engine.
4. When the engine is hot oil "smoke" is rising from the "exhaust" area
a. so it's either burning on the exhaust manifold or turbo housing

If you were here.... what locations would you suspect? Thanks so much. If you ever need to R&R a fuel pump.... I'll walk you through it. https://www.matthewsvolvosite.com/forums ... =1&t=20367

Post by **jblackburn** » 28 Sep 2010, 09:40

Clogged PCV system or bad oil cap seal. The rear cam seal (behind the dist cap) may be leaking too if there is lots of oil everywhere.

I'm pretty sure if you take off the spark plug cover on the top, the wells underneath will be covered in oil. That then runs off the back onto the turbo.

Post by **SniperCat** » 28 Sep 2010, 09:52

I'll inspect the area under the spark plug cover. If it's filled with oil.... I'll follow your PCV protocol. Thanks a bunch.

mindshadow · Post by **mindshadow** » 28 Sep 2010, 11:49

Which side of the engine is most of the oil coming from? I had a huge puddle on the passenger's side and it was a combination of the PCV and a few seals (camshaft and exhaust I believe). If it's the driver's side you may want to panic a tad.