1990 Dodge Dakota No start

I have a 1990 Dodge Dakota with the 2.9 v6. I brought it into the garage to replace the feed and return lines and fuel filter from the tank to motor and back. Drove it in now it has the 2 second injector pulse and nothing else. It won't stay running. I checked the ASD Relay I replaced the distributer module and the computer. I am at a loss here. I checked the injector pulse and it shows none I checked the wiring and it is ok. I can ground the injectors and do a scratch test and it will run that way. I have done everything I know to do, what else should I look at.