Hard to start hot. Problem started after 3 hour drive to Las Vegas. Starts fine cold. Runs good
Fuel pressure 35psi at idle. Fuel pressure regulator working. New fuel filter. Pressure drops to 0 when motor turned off. Bad check valve in pump. Will loose about 10psi with fuel line pinched off at filter. Waiting for in line check valve. Mas air flow sensor clean and looks good. Intake temp sensor checks good with ohm meter. Coolent temp guage working. Holds no pressure in the tank! Bad fuel tank vent valve allowing tank to vent into intake ?