19934.3 with vortec blazerwas running fine went out to start and would not start let sit and started up changed fuel pump started ran for a few minutes and dies letit sit and it well start back up changed fuel filter alsohavent checked fuel pressure but dont think its it. any other ideas would be appreciated

 

Test the fuel pressure... You may have a leak internal to the plenum. This is common for the CPI motors.

 

well try. had to change fuel pressure regulator already. i dont think it has any fuel leaks and it seems to keep pressure fires right up when it well start just wont stay running long.could it be the fuel relay??im out of ideas. its got me stumped! thanks for the help