I would never try to connect a FP gauge to an engine that was already
running, gas will squirt all over the place and the engine will stall.
Connect the gauge first, then cycle the key a few times to build
pressure. Check for leaks, if all ok, start the engine.

Mark

Scott Daniel wrote:
> it's always a good idea to know that the fuel pressure is within spec.
>
> the normal way is, engine running,
> connect your FP gaue to the testing port, on that triple T by the
> distributor.
> 7mm hex nut there.  Connect FP gauge hose there.
>
>