if nothing is blocked this might help.the large screw that there talking about has two holes in it these holes have to line up with the grooves in the top of the pump jet,if they dont the fuel will not flow through the way to fix this is to get new washers or try putting two on.ive been experiencing the same problem its been driving me crazy,good luck
ok just bought a tacho im an absolute dummy with electricals have instuctions but still have no idea really on where to wire up power (red wire) & white wire ive read some old threds gave me bit of ideas but still not real confident on wat im doing can someone point in the right direction, please. if i post a picture of all the wires under my dash will it help to explain?