fuel temperature and regulator

[Robert Gallant]

Are you using an isolated or direct reading fuel pressure gauge.

I'm running an Autometer high pressure isolator and find that when the
gauge is indicating a fuel pressure problem, the isolator needs bleeding
(happens approx once per year)


> Can the temperature of gasoline affect the fuel pressure on a tbi
> system?  I have an in-tank pump (brand new).  I used to run 18 psi and
> the fuel pressure was stable in all weather.  Now, with the 7730 ECM i
> run 11 psi and it varies from 12 psi down to 10 (which makes a
> difference in performance).  I used to have an external electric fuel
> pump, and the pressure went from 14 psi down to 9.5 or so.  When its
> nice and cool outside (les than 65 degrees), its stable.  All filters
> are new and there are no leaks.  Could my pressure regulator (TBI
> mounted) be bad?  Should the temp. affect pressure?  Thanks in
> advance.  Also, is there anybody actively playing with a 7730 ECM?  I
> am about ready to purchase an eprom emulator and start on mine.

-- 
Rob
MailTo:gallant at oasys.dt.navy.mil