Blue smoke maybe oil leak?

[FilmerDude]

Under boost on my old turbo I used to have blue smoke but I have gotten a new turbo but haven't drove it yet. But something curious I have noticed is that the fuel injector area is pretty wet. Took the rail off and it looks to be oil and the injectors have some oil on them and even on the lower portion of them! So I'm thinking valve cover gasket? Looks somewhat wet on the back of it but not an obvious leak. Any ideas?

 

[Zorak]

I would say valve cover gasket, especially if it hasn't been replaced. Wipe down all around the VC really good and run it a bit then check it again. It won't always be an obvious leak but if left alone long enough it can make a huge mess. If you get a new gasket make sure you get a soft rubber or silicone one. The cheap hard rubber ones leak like crazy no matter what you do.

 

[FilmerDude]

Alright I'll throw one on there and see what happens.

 

[Zorak]

Just make sure not to over tighten the VC, Idk if you've changed a VC gasket yet but our covers are very prone to cracking if you over tighten the center bolts. I always snugg up the outer bolts first, then the inners just tight enough that they don't rattle out. I think the service manual only calls for 2-3ft lbs. I just use a socket with an extension, no handle.

 

[2fast2evo]

I had this exact set of problems as well. It was indeed the VC leaking. Make sure you tighten all of the bolts in a good order and don't over-tighten.

 

[JKart]

I agree over tightening the bolt may damage the gasket or even the nut and bolts. Make sure to use a torque wrench just to be sure.