obviously you have a fuel leak.

see if you can trace the rubber fuel lines from the firewall area to the fuel rail. i suggest you follow the rubber lines with your fingers while squeezing the rubber as you go. any leaks in the rubber should be evident.

if not in the front, the leak might be in the rubber hoses above the fuel tank.

either case, finding the leak should be pretty easy.

I suggest you stop driving the car until you sort the problem out.

__________________
Ben
1987 190d 2.5Turbo