[T3] Leaking fuel pump

[matthew n stanfield]

I finally got around to taking the leaking fuel pump off my 1970 FI Fastback. Most of the fuel seemed to be coming out around the plug. I have a spare pump body, so i switched the pump head (which jim rebuilt for me some time ago) to the spare body. I was careful to make sure i reassembled it correctly (with the notch in the plate by the - terminal on the plug) and reinstalled it on the car. Put fuel in the tank and it started pouring out of the pump again from around the plug. Removed the pump and disassembled.

In looking at it, i am thinking maybe the O-rings are not quite right. One seems to fit in the grooves nicely and is flattened on two sides. Seemingly indicated that it is sealing properly. The other one, however, seems much skinnier. It is the correct outside diameter, but does not fill the groove. Furthermore,it is still perfectly round in section. So i am thinking i somehow got the wrong O-ring in the pump somehow. I searched around my stuff, and do not seem to have another one of even close to that size. 

My next step is to try and find an the correct size O-ring for the pump.

matthew Stanfield
1970 VWfastBack
mansfield, OHio