CaveVan Forum
VW T4 "Eurovans" => VR6 Engine tech => Topic started by: jnick on September 12, 2017, 05:01:31 pm
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I have a 2001 EVC with about 60k miles on it. It runs well and doesn't use oil. It recently threw a P0172 code so I cleared it, changed the air filter and cleaned the MAF sensor. The section of tube near the MAF sensor had a thin coating of engine oil in it. I assume that this is from the PCV system. Is this common or does it indicate a problem with the PCV system?
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I discovered a lot of oil in the air intake recently. I cleaned it out and cleaned the MAF sensor also. I had a lean running bank 1 code as well that I later discovered was caused by a leak at the junction where the PCV meets the air intake. I had to replace the intake pipe. No more codes but now I am trying to diagnose a serious loss in fuel economy. Down to 13 from 18. Nothing else with respect to my driving habits has changed.