Friday we got the new turbo on the 194,758 mile 1.8T Passat and I drove it home. It ran great and after about 50 moles of running it through its paces it stopped smoking. On saturday I drove another 175 miles again without issue. The car makes linear boost and gets 27-30mph at 75mph. All looks great so far right?
Nyet.
Sunday morning Mrs. Brown goes out and starts the car and it is billowing out smoke like the day before the turbo was repaired. I happen to pop the hood and can hear pressure whistling from the oil fill cap. As soon as I opened the cap the car stopped smoking. In a vain attempt to relieve the presuure I drilled a couple 1/8" vents in the oil cap and drove it in to work which really worked with the exception of the additional loss of oil.
Has anyone else seen the PCV system fail?
Is there a mole caught in the PCV valve? Sorry
PCV valves fail, take it out and if it doesn't rattle when you shake it, it's stuck or broken. The grassroots solution is to rinse it out with brake cleaner, they clog far more often than they break. They'll only open if they have both suction on the intake side and pressure on the crankcase side IIRC.
Woody wrote:
Bad rings?
Normally I would say yes but when vented this thing puts the power down very well, and if you have ever seen one of the turbos on these things it can't be actually adding too much power. TINY!
Replaced PCV and oil cap and it runs like new again.
NGTD
HalfDork
1/26/09 7:52 p.m.
Here is a link to the DIY on PassatWorld:
http://www.passatworld.com/forums/showthread.php?t=196909
Pretty good forum for DIYers!
Yeah, I am on PW and I forget about the search function ;)
