Hi,
Yesterday, I removed my intake manifold to change it for a new one. I noticed some oil on the left intake port. Also, there was oil in the same head intake port. I put my finger in the port all the way to the valve and I could feel a little pool of oil on the valve. The intake piping was clean/dry so It's not coming from the turbo. What could it be? Valve seal?

Thanks for your help everyone

 

Valve seals are leaking.

If you have to ask your better off paying to have them replaced.

Well, you removed the intake so may be you'll want to tackle this. It's a big job.

 

wow thanks for your help sir!

I will have it done tomorow don't want to risk dropping a valve!

 

si is dead on. either its your valve seals or valve guides. just went through the same problem

 

Valve seal probably failed because the guide mushroomed out, allowing the valve to **** itself, disturbing the seal. replace the guides, seals, and inspect the valves.

Replacing the seal will stop it for a little while, but you have to also remember, boost is trying to push that seal open, so it will only function partially the way it was supposed to. Vacuum in the manifold helps keep them tight. Pressure will blow them open.