Good Afternoon all,
I own a 98 2.0 petrol passat and have had almost 100K happy motoring.

However after a little rain i'm getting an acceleration problem. (not always) Approach roundabout, no worries 5th down to 1st and stopped. Then pull away.
Foot on accelerator, revs go up but the engine seems to fade go fade go, which can leave your heart in your mouth if you've decided to get out quick into busy traffic!!! then it's fine again, no worries!!

Any ideas what causes it? anybody had it happen to them, I can't believe it's the weather, surely not!