[Gmecm] Re: Gmecm Digest, Vol 29, Issue 3

[Dan and Deanna Jones]

Mike,
Forgive this question if it seems dumb, but I have run into the same kind of 
starting problems in the past on stock setups on direent brands of engines, 
that were cured by replacing the injectors or having them cleaned. In the 
cases I experienced, the injesctors were leaking slightly, slowly flooding 
the engine. I wonder if there would be some value in installing a fuel guage 
and monitoring the pressure after shutoff. In most efi systems if the fuel 
pump check valve is good and the injectors are good, the system will hold 
full pressure for a couple of days.

Dan

> Message: 1
> Date: Wed, 11 Jul 2007 18:28:14 -0600 (GMT-06:00)
> From: Mike Frels <mfrels at ix.netcom.com>
> Subject: [Gmecm] Warm start problem...
> To: diy_efi at diy-efi.org, gmecm at diy-efi.org
> Message-ID:
> <29180054.1184200095220.JavaMail.root at elwamui-milano.atl.sa.earthlink.net>
>
> Content-Type: text/plain; charset=UTF-8
>
> I am trying to diagnose a hot or warm start problem. I've got a gm TPI 350 
> running $8D for a 305 that has been modded to work with my setup. Morning 
> starts she fires right up. Hot starts if she's only been sitting for less 
> than 10-15 minutes also fine. A restart between 15 minutes to 5 hours 
> sitting takes some cranking. Looking through my tables I've got various 
> Start Up Enrichment and Crank Fuel Pulse Width settings that I am thinking 
> I need to adjust. Can someone enlighten me on what the differences between 
> Start Up Enrichment and Crank Fuel Pulse Width? BTW I have acquired this 
> summer time problem since I switched to LS1 injectors last year.
>
> Mike
>
>
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> End of Gmecm Digest, Vol 29, Issue 3
> ************************************