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View Poll Results: Do you wait for your fuel pump to prime before starting?
Yes 11 37.93%
No 15 51.72%
Huh? 3 10.34%
Voters: 29. You may not vote on this poll

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Old 04-22-2011, 09:35 PM   #1
Alexotronic
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Do you wait for your fuel pump to prime?

When starting our cars. When key position 2 (one before ignition) is reached you can hear the fuel pump "prime" - sounds like a mechanical buzz/hum. The sound only lasts for a few moments.

Lately I've been finding myself waiting until the noise stops to crank the engine. Wondering if I should break the habit and start the car immediately.

Can anyone enlighten me as to what exactly the fuel pump is doing.
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Old 04-22-2011, 10:07 PM   #2
ryanwhite74115
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I get in the car and start it immediately. I don't, however, drive it at full redline pulling out of the parking lot and do wait around 10 seconds to 2 minutes (depending on temp) to drive it.
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Old 04-22-2011, 10:12 PM   #3
darkapollo
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It's priming, but your fuel system stays pressurized so no need to wait.
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Old 04-22-2011, 10:34 PM   #4
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Unless your fuel system is losing pressure while sitting, there is no need to wait for the priming.
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Old 04-22-2011, 10:37 PM   #5
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Originally Posted by ryanwhite74115 View Post
I get in the car and start it immediately. I don't, however, drive it at full redline pulling out of the parking lot and do wait around 10 seconds to 2 minutes (depending on temp) to drive it.
This.
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Old 04-22-2011, 10:48 PM   #6
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I wait until temp is on normal lvl before going about 4k rpm

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Old 04-22-2011, 10:51 PM   #7
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Do you have OCD?
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Old 04-22-2011, 10:56 PM   #8
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i always wait
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Old 04-22-2011, 11:05 PM   #9
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Quote:
Originally Posted by ryanwhite74115 View Post
i get in the car and start it immediately. I don't, however, drive it at full redline pulling out of the parking lot and do wait around 10 seconds to 2 minutes (depending on temp) to drive it.
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Old 04-23-2011, 12:42 AM   #10
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Do you have OCD?
I always heard the engine will last longer if you do that, idk if it's true I guess it just stuck
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Old 04-23-2011, 12:46 AM   #11
albarran9
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I do this unconsciously. I always insert the key and turn it into the 2 position to let my HID's get fully bright and situate myself before turning the key all the way.
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Old 04-23-2011, 01:32 AM   #12
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I do this unconsciously. I always insert the key and turn it into the 2 position to let my HID's get fully bright and situate myself before turning the key all the way.
Same. Not because I wait for it to prime, but because I have some rituals to complete.

Every ride in the E46 is a special one, hehe.

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Old 04-23-2011, 01:45 AM   #13
new//M3fan
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I just get in it, start it up and drive away and use common sense...
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Old 04-23-2011, 01:50 AM   #14
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I wait, when im in a hurry i dont, plus i wait for the rpms to drop when its cold or anytime they have to drop to normal which on mine is around 800
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Old 04-23-2011, 02:19 AM   #15
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Nope.
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