[Diy_efi] Fuel pump run time with key on

[Gianmarco Rizzo (BE/EAS)]

as  someone else already pointed out, there should be a one-way valve in =
the fuel pump, and the fuel pressure regulator on the other side of the =
rail. these should keep the pressure in the rail. if fuel drains back to =
the tank, then either the valve or the fuel pressure regulator are not =
working properly. or there is a leak somewhere else.


gm

> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org=20
> [mailto:diy_efi-bounces at diy-efi.org]On
> Behalf Of Ben
> Sent: Montag, 22. August 2005 09:25
> To: diy_efi at diy-efi.org
> Subject: [Diy_efi] Fuel pump run time with key on
>=20
>=20
> When I turn the key on, my fuel pump runs for 2 seconds to prime the=20
> system.  Unfortunately, my fuel drains back to the tank almost=20
> immediately and I have to turn the key off and on 5 times to=20
> start it up=20
> without having to crank it forever.  Is there a setting in=20
> the computer=20
> to make it run longer?  91 grand prix SE 3.4 DOHC 5 speed=20
> using DF code.
>=20
> Ben
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> Diy_efi mailing list
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>=20
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