If you had good pressure and it held, you didn't need a regulator.
You said you had weak spark so that is ignition. You also said it would start on starter fluid but quit when it ran out. Your weak spark and lack of fuel flow are probably coming from the same culprit.
Take out the ignition module (it is under the rotor in the distributor) Ad take it to an auto partsstore, they will check it for free. Have them run the test several times to get it good and warmed up. If it fails even once, replace the module. Now the important part. ONLY use an AC Delco module. If you use an after market (wells, GP, etc) you will be back for another one in a month or less
The reason that the no fuel condition is caused by the ignition module is that the computer is looking for a reference pulse from the module, then it will fire the injectors. No reference pulse, no fuel.
Wednesday, December 30th, 2009 AT 8:15 AM