The pump is working normally the reason it stops before you start the engine is it has built up enough preasure and cuts out. When you turn over the engine it starts up again as the preasure goes down when the carburator open's. The pump only helps the fuel from the tank. It seem's like dirt in your carburator. The reason it wont start after 3 minutes is the excess petrol in the carburator has evaporated hence need to pour more in. Check all pipes filters and carburator for dirt.
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I have checked the fuel pressure all the way up to the intake manifold plenty of pressure but the car still won't start or run. I even used a test ecm. have anyone have any other remendies that might work? I don't see this as clogged injectors, it seems as if the injectors is not being turned on and there isn't a check engine light on.
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