Thermo Time Switch for '87 5ktq? [was Fuel Pressure Testing - 5ktq - where to tap?]

[Huw Powell]

> Yeah, I got the guages hooked up, and so far don't see anything out of spec.
>
> I have not done warmup tests, only cold with fuel pump running, engine off.
>
> System Pressure = 88-90 PSI
> Control Pressure = 30 PSI

I *think* that control pressure should be lower when cold, more like 15
psi or so. (goes to 45-50 or so when warm)

So your warm up reg might be at fault.

--
Huw Powell

http://www.humanspeakers.com/

http://www.humanthoughts.org/