Testing fuel pump

gmc
1500

#1

I have a non running fuel pump. Is it ok to use test leads to troubleshoot the fuel pump with 12v from the battery? I have never tried it before and I’m worried about the amps coming from the battery.


#2

Is the voltage requirement and current draw maked on the pump housing?


#3

Look at the fuel pump fuse rating. This determines the amount of amps the fuel pump can draw. So for example if the fuse is rated for 10 amps, and for the length between the battery and fuel pump, a 14 gauge test lead wire should be used. If it’s a 15 amp fuse, a 12 gauge test lead wire should be used. And so on.

Tester