Hi All,
I just installed a Mallory 4070M on my 79 Rx7.
My gas lines to the carb are currently disconnected going into a jar.
When I first tested the fuel pump I could hear it whirring and it indeed pumped fuel into the container I had waiting under the hood.
Unfortunately the second time I turned it on it did not work. The unit gets warm/hot after a few minutes but I cannot hear any internal whirring.

Any ideas where to start? Could the pump simply have failed?

 

Sounds like a bad ground or a bad pump.

 

Well I just disconnected my beautiful wiring job and tested the pump directly on a 12V lantern battery and it didn't turn on.
I'm a junior mechanic so bear with me but putting the pump + and - directly on the 12V should turn it on right?

 

Let me ask another basic question. I mounted this fuel pump in a "lying down position" i.e. not vertically. Was this a mistake?

 

https://www.rx7club.com/1st-generati...issue-1095849/