I was having trouble with my injector pump so I try one a guy I know let me borrow until I can decide whether to get one rebuilt or not. Anyways, he said it came off a running truck, been sitting on a shelf for a few months. Anyways, put it on and it sure seems like its taking a long time to shoot any fuel out of the slight cracked open connections at the injectors. I'm far from a diesel expert, but is there a way to check to see if the fuel solenoid is working? I'm getting 12 V at it.