Volkswagen Repair: 1.8t Jetta oil leak, valve cover gasket, crankcase pressure

Question
Hi, Rocky
I replaced all the valves, timing chain, belt, rollers, and tensioner. Got it back together and it runs well; however the turbo oil supply line leaks at the oil filter adaptor. Also, there is oily air escaping from the valve cover and I get white/blue smoke from the exhaust, so I suspect the pressure in the crankcase is too high. Any idea what I might have screwed up?

Answer
Hi Paul;
The crankcase pressure is too high because the "suction jet pump" is clogged.  Check the "cam tensioner seal" too.  I'll bet it's seeping oil as well.  The intercooler has got oil in it now too.  Clean out the intercooler.  Change the suction jet pump. Replace the tensioner seal, and valve cover gasket, and do your best to clean out the turbo, and the pressure induction hose to, and from the intercooler.  It may already be too late for the turbo.  Sorry to say, but once they start to blow oil, the seal between the exhaust, and intake sides of the turbo is usually gone.  Clean it all up as best as possible and run it.  If there's still bluish smoke in the exhaust the turbo is a replacement candidate.  Has no one said anything, heretofore about the "suction jet pump?"  It's that plastic thing that uses engine vacuum (when it's clean) to help with brake boost.  I have replaced a bunch of them, and they are not fun to get to on Jetta's.  Under the intake, and that metal brace that holds all of those vacuum lines.  Sorry to hear about your plight!  You didn't screw anything up.  It was the engineering of this combination of parts.  If you keep the car, do yourself a favor, and switch to full synthetic oil, and change it often, with the filter of course.  It won't turn to "coke" nearly as fast, but do yourself an even bigger favor, and change the oil more often, even with synthetic, and the entire system will stay clean for a long time, and lots of pleasurable driving.  There are some things about this engine that are fabulous, like the power, and fuel economy, but there are other things about this engine that make me, and all of my fellow technicians where I work scratch our heads in wonder..."What were they thinking?"  Good luck, Paul.  I hope you get it handled, and make it fun to drive again.