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Sounds like it could be the EGR Valve.If you can drive it and get up to 45-55 mph and it runs smooth then its the EGR valve that is stuck in the open position.I would take the EGR Valve off and clean the carbon out of it using a non-chlronated brake cleaner.
you need to check see if it is getting fuel sounds like a clogged fuel filter and when you pump the fuel peddle you are puttting it clear flood mood which may also be leaking fuel injectors and flooding the cylinders with fuel but most likely is a clogged fuel filter try spraying starter fluid in throttle body and if starts its clogged fuel filter
Have you checked the temp sender? If the computer does not know the engine is cold it won't put enough fuel into the mixture to get it started. If after starting it by priming, if you can get it to run, I'd look there. Also on most systems the crank sensor will play a part in there as well...If the computer does not see a signal from there it will often shut down the fuel pulses to the injectors. If simple testing does not show you anything, have a code test done and see at least which systems are showing faults and work from there. Chiltons and Haynes list individual component tests you can do to isolate a single component.