Fuel pressure
 

94 Coupe w/150k on it, recent tune-up including optispark and fuel filter. Car won't start, was no fuel pressure. I was advised to disconnect the vacuum line to the regulator to eliminate that as a possible problem early on and it made no difference. Checked the fuel pump relay, removed fuel pump and applied 12 volts to it and it ran. Interestingly the pump would not run on a battery I hooked up to it that was putting out 10 volts but did at 12 volts. Put it back in, still won't start but there appears to be more pressure than before because a lot more fuel comes out of the Schrader valve. For some reason I can't get my pressure gauge to thread onto the valve though so I can't measure it. It worked in the past and I can't figure out why it won't thread on now.
Any ideas?

A fuel pump can run but if the impellers are worn it may not be delivering the required pressure. I've also got the problem of reading the Schrader valve. Bought a new FP Kit with all the bells and whistles but it will not read the pressure. Guess I have to replace the port and the valve since putting a new valve in made no di.fference.