[Diy_efi] Injectors Not Firing...

[Clair Davis]

DOH... perhaps I should mention that this is using a GM '7730 ECM...


----- Original Message ----- 
From: "Clair Davis" <clair.davis at charter.net>
To: "diy_efi" <diy_efi at diy-efi.org>
Sent: Sunday, October 08, 2006 8:47 PM
Subject: [Diy_efi] Injectors Not Firing...


> Got everything to the point that I could try to fire the old Plymouth up
> today.  Everything SEEMS to work, except the injectors.  No gas smell in
the
> tail pipes or intake, no flashing on the noid light, I'm guessing the
> injectors aren't injecting.
>
> Here's what I know:
> - #1 plug is firing on the early side of TDC
> - spark is nice and regular (according to the timing light)
> - there's over 40psi of fuel pressure at the regulator
> - there's fuel in the rails
> - the fuel pump relay is doing it's thing
> - no fuses appear to be blown
> - ECM is grounded to the engine block, and engine/chassis grounds are good
>
> Here's what I don't know:
> - does the ECM case need to be grounded? (assuming not)
>
> I haven't hit my 1990 Camaro FSM yet, but I figured I'd better throw this
> out to the masses anyway.  Anyone have a clue as to what's going on?  I
> really think everything is pretty solid, from a wiring standpoint, and
fuel
> is obviously not an issue (other than the small leak at the pump, and the
> fact that it's not getting in to the combustion chambers).
>
> Any help would be greatly appreciated!
>
> Clair
>
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