When it does that you turn key on and off i hear the fuel pump but it wont start till you let it sit a couple hours. The van also did not come with a fuse panel cover for under hood so i don't have fuse location
Not enough fuel pressure check filter could be bad pump
SOURCE: hard to start chevy 350 vortec
You will need to do a fuel pump pressure leak-down test, the pump must not loose more than 5 PSI overnight, u will need a cheap fuel pressure test guage, the test port is on the fuel supply rail to the injectors on the intake manifold, it looks like a tire valve but metal with a plastic cap on it, u may be able to borrow this guage from Kragen, Autozone or a parts store like them, if not they are very cheap, less than $20 US. Run the engine with the test guage hooked up, turn off the engine and then check it in an hour or so, if it drops more than 5 PSI then u will need to replace the fuel pump in the gas tank. One note make sure the connection for the guage is tight with no leakage or the test is invalid
SOURCE: fuel pump wiring diagram for 1998 chevy express
Well if theres power going to the relay but not out, then you need a new relay. If theres power in and out of the relay, you might need a new fuel pump. The electric fuel pumps inside the tank are actually lubricated by the fuel as it pumps it, and if it runs dry long enough, it can burn out the pump
SOURCE: Chevy 3500 Express truck. fuel problem?
IF YOU GOT CYLINDER MISFIRE.OR OPEN FUEL INJECTOR.THAT WILL CAUSE THE PCM TO ENRICHEN FUEL MIXTURE.TO ADJUST TO DEAD CYLINDER.WHICH ACT AS A LARGE VACUUM LEAK.THATS WHY YOUR EXHAUST TAIL PIPES HAS A RAW FUEL SMELL AND WHITE SMOKES.
SOURCE: 2001 chevy 3500 van Fuel pump out?
1st ensure the fuses are all good and there is fuel in the vehicle and your not getting a false reading by tapping on the tank ..does it sound Hollow oe Empty / another way is turn on the key and listen for the pump to work a slight humming should be heard ...if so locate the fuel bar and cap screw depress the valve shielding your eyes with say a towell and see if gas dispurses make sure the key is on while doing this if no gas is there or fuel pump is heard then it may be either a bad ground to the unit or the fuel pump itself corroded connections will contribute to this as well unclipping and reclipping the connection togeather should allow a better connection
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