My 1980 with a 84 GTI motor wont start. When I turn the ignition on, the fuel pump runs but when I turn the ignition to start it cuts out. The PO has bypassed the fuel pump relay and it runs constantly when the ignition is on. So it not cutting out like a stock system when it gets up to pressure. As soon as turn the key to crank over the pump cuts out.
Any thoughts on this