2008–2014 VW P0171 or P119A With an Oil Leak? Smoke-Test the Crankcase Safely
Connect VW P0171/P119A and oil leakage through a known-good crankcase-vacuum comparison and a carefully limited rear-main-seal smoke test.
Tag VW rear main seal smoke test
Connect VW P0171/P119A and oil leakage through a known-good crankcase-vacuum comparison and a carefully limited rear-main-seal smoke test.