Jay :
The pressure is effectively regulated by the spring in the fuel pump.
The linkage to the camshaft only lifts the diaphragm (sucking gas from
the tank), the spring is what develops the pressure to the carbs.
Most automotive vacuum test gauges will read fuel pump pressure.
Randall
Jay Snavely wrote:
>
> I was wondering what controls the fuel pressure on a TR6 with carbs.
> Looking at the fuel system, I do not see any pressure control device. Do
> the flow valves in the fuel pump control/limit the pressure?
>
> The manual says the pressure is to be 1.5 to 2.5 PSI. Any suggestions on a
> gauge to measure this small pressure?
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