�Took my Vanagon in for diagnosis/repair after it failed emissions��. I'm not sure I can beleieve anything this shop says but they said it was running rich and they adjusted the timing. They said this fixed the CO levels but the NOX levels are still borderline.
They said because it had been running rich, I need to take the van away and drive it hard for around 50 miles to clean out the cat. Does this sound right? Sounded weird to me.
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David (1987 Wolfsburg)