Pumping out fuel-- what am I missing?

[GN SBS]

I'm trying to pump out some fuel tonight using the method I've always used-- hose onto the fitting for my FP gauge that compresses the schrader valve on the rail; alternator power to lead that hot wire plugs into.

Once made, the above connection turns on the pump as normal, but I'm getting literally only a trickle worth of flow through the hose. Not even enough to flow over the fender into the can.

I didn't forget to reconnect connection at the tank, and some fuel is flowing, just a very very small amount. Once I got tired of fooling with it, FP gauge shows normal pressure and car runs fine. What am I missing?

This is the first time I've tried to pump out the fuel with a new double pumper, but I can't see how that would affect it.

thanks,
Scott

 

[John Larkin]

Take the schraeder valve out completely, then screw the dump hose back on. You'll get plenty then.

 

[GN SBS]

This technique has always worked before, but it did cross my mind that maybe the valve isn't being completely compressed-- enough to get a FP reading, but not enough to flow fuel.

Thanks. Other thoughts welcome!

-Scott

 

[V6POWER]

What John said.