So,

I  got a new Delphi mechanical fuel pump, and finally installed it. Drove about 20 miles, and the car died. Checked every thing, and found that there was no fuel.

I put the old fuel pump in, which has been in the car for years, and the car started up after the carbs got fuel.

Checked the pump, and it looks identical to the GMB fuel pump, and the Delphi looks identical except for the Delphi written on it.

I checked to see if there was any suction after removing it, and there was none.

 

Just a heads up, kinda of a bummer........

 

That's why i bought the last 3 pumps here in the netherlands in the original box.. many years ago..   i hate those junk fake parts (what you get on ebay..) most are cheap but also worth nothing.

https://www.classiczcars.com/forums/topic/64113-weakness-revealed-in-the-gmb-and-spectra-mechanic-fuel-pumps/