Weird Smoke

[Neejay]

Background: RB25 into an s13. At first there was a lot of oil leaking between the turbo and turbo elbow. There was a lot of greyish smoke that smelt like gas. Replaced an injector's o-ring and MOST of the smoke disappeared as well as the smell. Once it was running for a while (idling) the oil leak stopped. Now there is a little blue-ish smoke only when I get to about 3k RPMs, come to a complete stop, then take off again. Regular driving = no smoke.

I recently saw that the PCV hose port on the intake manifold was loose (i.e. no vacuum) so I temporarily slightly hammered the port in snugly + black silicone so I can go back to the shop and get it welded or some other permanent fix.

Would the lack of PCV (since there wasn't any vacuum going to it) cause smoke?

I checked the turbo intake pipe and there wasn't any oil or oil residue. Also none in the cold pipe or in the turbo inlet/compressor wheel. Hardly any shaft play in/out and very little side to side + blades looked good.

There was a compression test done while the swap was going on and it was 149x5 and 140x1.

Any ideas? Does it just need to be driven to burn off any build up from sitting and/or when the injector o-ring was bad? I'm going to get another compression test done soon.

Stock RB25. I haven't driven it except from the shop to my home (about 15-20 miles) shifting around 3k rpms and only started it and revved it since.

Edited December 9, 2008 by Neejay

[Neejay]

I'll test out the newly sealed PCV valve hose shortly, after I get home from work.