Fred :
The Haynes manual lists fuel pressure as 1.25 to 2.5 psi. IMO you
should be able to go as high as 4 psi without problems. Your fuel line
sizes sound fine (original was 5/16" to the pump inlet, 1/4" from the
pump to the carbs).
If you continue to have problems, get a vacuum test gauge at your local
auto supplier (be sure it also reads positive pressure to at least 4
psi), and temporarily tee it in right at the carbs (or even between the
carbs). The hose supplied with the gauge should be long enough that you
can lead it out under the hood, and place it under the RHS windscreen
wiper, so that you can observe it while driving. You may find that, for
whatever reason, your pump/regulator cannot keep up under load.
JC Whitney sells an 'economy' vacuum test gauge for $12.99.
Randall
Fred Thomas wrote:
>
> O/K the fuel pump is installed and operating, this is a NAPA 4/6 lbs pump, I
> also installed a NAPA pressure regulator, one book calls for 1 lb of
> pressure another calls for 1 1/2 lbs., I set it at 1 1/2 lbs. and have a
> miss when I get into the accelerator, and also at high speed, this is a fuel
> miss and not elec. should I set the pressure up to 2 lbs. or has anyone have
> a elec. pump on their T/R and if so what pressure are you running. I have a
> 5/16" line from the fuel shut off valve to the pump & 5/16" to the pressure
> regulator, then 1/4" around to the carbs, always been this way, just
> wondering if this may have some effect on it, is 1/4" the correct size fuel
> line for a T/R 3 ?? Thanks "FT"
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