Fuel rail vaporization

[Programmer]

Fuel volatility problem ?
Have you scoped your fuel pump ?
When pump rpm drops, this usually occurs--
especially on Ford products.
Lyndon.
-----Original Message-----
From: Daniel Collins <bossute at one.net.au>
To: gmecm at diy-efi.org <gmecm at diy-efi.org>
Date: November 5, 2000 4:07 AM
Subject: Fuel rail vaporization


>Howdy everyone , the weathers starting to warm up here Downunder  , I took
>the Ponty for a drive yesterday and now in traffic I am getting fuel
>vaporization problems at idle and part throttle. Outside ambient temp is
>about 35 deg , soon to rise to 40 deg as summer hits and the problem shows
>up when the intake air temp rises above 85 deg.
>I have already blocked off exhaust crossover in manifold , added auto trans
>cooler to fuel line , moved the pressure regulator so that it is above the
>fuel rail. When it starts I can hear the fuel pump "groaning" and the
engine
>runs lean. Would raising the fuel pressure help or would it be better to
>have a bleed off to keep the vapor bubble out ( I assumed the pressure
>regulator would perform this function). has anyone experienced this and
>overcome it ? any help would be appreciated.
>
>Daniel Collins
>Hot Downunder
>Days like this makes yah want to fit aircon ! ,maybe I am getting spoilt
>driving a late model car during the week .
>
>---------------------------------------------------------------------------
-
>To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
>in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
>

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org