Q: Cranks but won't start on 1998 Chevrolet Express 1500

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The car started then stalled now won't start, just cranks doesn't seem to fire at all. I have spark and can here the fuel pump. There is pressure at the relief valve. If I spray starter fluid in, it will fire over but not start. What can I check next?
(2) Answers
(3) Comments
what is fire over??? what was the fuel pressure. you need 58 lbs to start but 60 is the desired pressure. how do you know it has spark??? i suggest a shop to check it and give you a bid.

Thanks Roy. I don't have a fuel pressure gauge but if I open the relief valve it squirts out with some pressure, don't know what the true pressure is. I put a dummy plug on one of the plug wires and can see the spark. Fire over means I get some combustion if I spray starter fluid down the throttle body, but once the starter fluid is used up, it just cranks. I can't see the pressure regulator on this design nor can I see the fuel injectors - I'm not even sure if it is ported or throttle body fuel injection.
could be the gear on the bottom of the distributor or timing chain &gears
Probably too late, but my 96 van was doing the same thing. I could hear the fuel pump running, however, checking the pressure on the fuel rail with a guage, I only had 45 lbs. I replaced the fuel pump and it now starts better than ever.
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