Tech question on fuel system

[craigztoyz]

Does the fuel system need to be pressurized to make the injectors fire? Some manufactures do, some don't. In the wiring I do not see anything that would do that, but trying to figure why I have no injectors firing.

[Jeff Taylor]

No. There is no pressure sensor on the fuel system that disables the injectors when no fuel pressure is present.

Make sure you are getting switched +12V to one side of the injectors.

Also, the injectors may be stuck shut. My VH45 had sat around for years without running and 6 of my injectors would not fire. To fix them, I applied 12V directly to each failed injector for a half a second. This freed them up for some reason.

[craigztoyz]

Thanx Jeff. Bad computer ground on something in the ecu system. redid grounds, and it works!! thanx again