Originally posted by Bob Blaylock:
Is there really a good reason not to pump the gas pedal before you start a fuel-injected car?
Bob,
During the early 80s when fuel injection was coming online, the PCMs
that monitored your engine management controls were slow.
Pumping the gas and then cranking the engine would set the bandwidth of the injectors to FULL TIME,
because the last thing the PCM saw as you turned the key from on to start,
was a TPS setting close to Wide Open Throttle.
This in-turn would FLOOD your engine very easily.
In today's PCMs I doubt that pumping the gas would do any harm, since the speeds of today's PCMs are
quickly approaching real time calculations and adjustments.
But what do I know ?
Go out to your car, turn the ignition to ON and give the accelerator pedal
a few quick stomps and then crank her up !!!
Let us know what color your exhaust is...
