In this particular case it is doing its job.  The main difficulty is timing
from numerous tech articles that have been written dating back to type ones
and old carburated fords etc at mountain elevations.  I forget how much it
is but I used to have it marked on the side of my distributor (when I had
one of those)  computer controlled timing adjusts for it.  Unplugging the
fuel pump will run the engine lean but then it will also be warm enough to
start up when you put the fuel pump back into the system.

There was a time when I would start up generators at altitude with a shot of
ether only and then hook up the fuel lines.  Amazing the difference a warm
cylinder makes.

jimt

On 5/12/05 7:12 PM, "Karl Wolz" <wolzphoto@WORLDNET.ATT.NET> wrote:

> A shot in the dark, but shouldn't the fuel pressure regulator tend to
> compensate for altitude?  After all, pressure is relative to the ambient
> air pressure - I think?!
>
> Karl Wolz