I have a 2000 Chevy express 1500 with the 5.7 vortec. This problem has been going on for a couple years now, it started when my dad had the van and couldn’t figure it out after many stops by different mechanics so I bought it thinking I could figure it out and about a year later still nothing. So the problem is that one day the van wouldn’t start and he sprayed it with starter fluid and it started right up, once you get it started it will run until you shut it off and boom same thing, (I don’t use ether I just pour gas in the cold air intake) it started out where it would start when it was cooled down but after that needed a boost, but now it won’t start at all without some help. over the time we have changed the fuel pump, fuel filter, fuel pressure regulator, distributor rotor, distributor cap, spark plugs and wires, camshaft position sensor, upper intake manifold gasket, throttle body gasket, oil pressure sensor, temp sensor, map sensor, maf sensor, checked all fuses and relays, and there is more but I just can’t remember all of it. Any help would be greatly appreciated. Also I forgot that when I have my fuel pressure tester connected and I release the pressure from the fuel rail it would start right up but without releasing it, no luck

 

What do we win if we guessed what fixed it?
Glad that it is behind you and welcome to the forum none the less.

 

You would be considered the best mechanic in my eyes.. it’s not behind me tho I’m still trying to figure it out that’s why I’m asking lol
thanks for the welcoming

 

Umm, don't think it's fixed yet! I am anticipating this will be an interesting thread
Welcome!

 

I think you need to read again. He is asking for our help.

I would test the fuel injectors.

 

how would I go about testing them? There’s really no way to try it with the key on. Is there a way to test them with the spider out of the car?

 

https://troubleshootmyvehicle.com/gm...uel-injector-1

https://www.instructables.com/id/Poo...Vortec-Fuel-I/

 

those were actually really well done articles. Thank you, but I did a leak down test and it held up pretty nicely

 

Silly me read it wrong. I thought it was posted, then was edited as it was fixed. Poor comprehension on my part!

 

No big deal, it happens lol. But if you have any ideas on what it could be I’d love to hear your thoughts