Greetings All,

The red glow could be from raw fuel hitting the catalytic convertor.
The raw fuel could be low fuel system pressure, or faulty long fuel
pulse.  Verify system pressure first.

I feel that it is imperitive to connect a fuel pressure guage at the
bleeder tee when diagnosing the fuel injection system. The symptoms can
be confirmed or denied in a positve mannor.

The Pressure Regulator can be restored to use by  applying  a pair of
needle nose pliers over the return hose, watch the fuel pressure gauge,
have an assistant cylcle the pump on via the ingiton switch to run
postion, clamp the line until 50-75 psi is reached then release. Repeat
2 or 3 times. This may restore function to the pressure regulator.

Sincerely,

Mark Keller
91 Carat