Q: Starting Problem on 1995 Chevrolet G Series Van (G20)

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
First thing in morning van always starts easily. Once engine is warm wont start. Engine turns over however just keeps cranking. If I hold accelerator to the floor as if engine were flooded it will start. Cold engine starts warm engine wont. What should I look for?
(1) Answer
This may be a fuel pressure issue. When you turn off the engine after it is warm, it is important that pressure remains in the fuel system to prevent the fuel in the lines/injectors from vaporizing. So check the fuel pressure with a warm engine, and when you turn off the engine fuel pressure should remain in the system. If the pressure drops, then you have a bad injector (leaking) or a bad fuel pressure check valve in the.