There's two things to consider. Most commonly fuel pressure is bleeding off overnight. It can take a few seconds of cranking the engine before the pressure builds up enough to get through the injectors. To verify that, turn the ignition switch to "run", wait a few seconds, turn it off, turn it to run again, turn it off, then try to start the engine. Each time you turn the switch on the fuel pump will run for one second. Two or three seconds is enough for the pressure to build up.
If the battery was recently disconnected or run dead the Engine Computer lost its memory and has to relearn "minimum throttle" before it will know when it must be in control of idle speed. The engine will be hard to start unless you hold the gas pedal down 1/4". It also might not give you the normal "idle flare-up" to 1500 rpm when you start the engine, and the engine will want to stall when coming to stop. To meet the conditions for the relearn to take place, drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the brake or gas pedals.
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Thursday, June 27th, 2013 AT 3:48 PM
