Can you flood a fuel injected car? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-29-2004, 12:17 AM   #1
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Default Can you flood a fuel injected car?

My car might be flooded. If so how long do you have to wait until you can try to start it again?
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Old 09-29-2004, 12:44 AM   #2
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YESS!!!!!! Wait for about 30min to an hour. Never pump the gas of a fuel injected car. That is what the fuel pump is for, to pump gas to the motor before you start it. Wait 3-5 seconds after the humming goes off before starting car.
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Old 09-29-2004, 12:50 AM   #3
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Try pulling the spark plugs if you think you've flooded it.
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Old 09-29-2004, 12:55 AM   #4
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Put the gas pedal to the floor and crank. It turns off the injectors. Don't kill your battery.
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Old 09-29-2004, 01:28 AM   #5
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YUP, sure can happen. (mine happened because I had ruined my MAP sensor, and the system couldn't tell when engine vacuum came up, thus leaving the injectors in the "over-rich/startup" condition.)

I had to remove the plugs, and dry them off. -Also, just like has been said, holding the throttle to the full open postion does shut off the injectors, -at least somewhat. I think the system still pulses them on, but only for short periods.
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Old 09-29-2004, 07:55 AM   #6
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Foot past 75% throttle, turns off injector pulses thus, no fuel reaches the combustion chamber, other than what is there. I use that trick to pre oil when she'* cold, so I don't have as bad of a dry start.


-justin
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Old 09-29-2004, 01:17 PM   #7
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When you start your car, you can push the accelerator past 75% and "prime" the oil system in the engine? Doesn't this cause any complications?
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Old 09-29-2004, 04:15 PM   #8
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It doesn't cause complications from the perspective of engine damage. I do it everytime I start the car, just for a second if the engine had been run that day, or 2+ seconds if she hadn't. If your battery is a POS, you may not be able to do this, but if your ignition is weak, or your fuel system is like mine, it may take an extra 2-3 seconds when cold to start after you let off the trottle. You won't see any changes on the oil pressure gauge, and once it starts, you won't see a difference then either. But I KNOW its working, just because the oil pump was still moving.


-justin
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Old 11-28-2004, 06:13 PM   #9
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Quote:
Originally Posted by 57chevythunder
YUP, sure can happen. (mine happened because I had ruined my MAP sensor, and the system couldn't tell when engine vacuum came up, thus leaving the injectors in the "over-rich/startup" condition.)

I had to remove the plugs, and dry them off. -Also, just like has been said, holding the throttle to the full open postion does shut off the injectors, -at least somewhat. I think the system still pulses them on, but only for short periods.

What happens in the over rich startup position? do the injectors keep pumping even when no gas is needed? does it even do it when the car has went dead and the switch is still on?
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Old 11-28-2004, 06:36 PM   #10
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Quote:
Originally Posted by opensourceguy
Foot past 75% throttle, turns off injector pulses thus, no fuel reaches the combustion chamber, other than what is there. I use that trick to pre oil when she'* cold, so I don't have as bad of a dry start.


-justin
Whoa, no no... You want your car STARTED as fast as possible, cranking the car you turn what 400ish rpm? Thats not fast enough to get the oil pump spinning to get the oil circulated around the engine. I doubt at that speed you could even build the pressure necessary to push the oil between the crank and caps.
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