Originally Posted by Bitsobrits
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BTW-I cycle the key 2-3 times with 2-3 second pauses between cycles before cranking if the car has been standing for some days, and that really seems to help starting. My conjecture, as yet unproven, is that the fuel system provides an extra amount of fuel on power up, and the multiple key cycles provide multiple enrichments.


Indeed. I believe each time the key is turned to on, the fuel pump runs for a few seconds then shuts-off. As far as I can tell, this is ECU timer-driven and has nothing to do with fuel rail pressure. If you leave the ignition on, engine not running, the pump will not run again that key cycle. Had a devil of a time sorting an electrical problem to my pump until someone mentioned this behavior to me! By the time I could get my meter on the pump leads, the ECU had turned off the power...