The engine starts slightly hard in the cold (not a problem at the moment), initially runs very lumpy and produces quite a bit of blue smoke. Lots of oil in the air intake. I've read elsewhere that the seal between the rocker cover and the pipe that runs from the air filter to the turbo can be the cause of this. The O-ring seemed OK, but I had a vague recollection of, before I came across this problem, noticing the pipe had come loose and reconnecting it, so I hoped this would fix it. Recently, I sealed the pipe to the rocker cover with RTV to try and completely eliminate this as the source of the problem.
I also cleaned out the pipe mentioned above, the pipes to and from the intercooler, the intercooler itself (by taking the ends off and flushing with brake cleaner and compressed air - a really fun job
), the throttle body and the pipes to and from it. All were dripping oil. I didn't clean the intake manifold because it means taking off all the injector wiring and fuel pipes. I hoped that I had found the source of the oil and stopped it, and the remainder would burn off eventually.Now the air intake seems to be full of oil again, and (perhaps most worryingly) the intake pipe has blown off the turbo twice (this may be because the surfaces have been covered in oil and so slipped off easily, but presumably there shouldn't be so much pressure there.
I recently changed the oil and filter, as well as dropping the sump, cleaning it out, cleaning the turbo oil feed and filter, oil pickup gauze, and replacing the injector seals, to try and solve/prevent the common problems with these - the problem I'm describing existed before all this, so it's neither solved nor caused it.
Anyone any ideas?
Cheers,
Dave
