Join Date: Sep 2006
Car: 2004 Facelift 75 Connoisseur 1.8 turbo with DD Pack. And remember, the troof is out there.
The orange clip can be only half of the FFS solution, it certainly was for me. So, I think I'd double-check the thin o-ring on the filter module cap. If it's still the original it may have distorted. If it was recently replaced, it may have twisted and displaced on tightening up. It's so thin and fragile it requires plently of lube and careful tightening.