Why do I have a choke??? - TwoWheelForum: Motorcycle and Sportbike forums
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post #1 of 24 (permalink) Old 11-14-2005, 09:58 PM Thread Starter
 
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Why do I have a choke???

I have a 00 gsxr 750, Its fuel injected. If I am FI why do i have a choke on the bike. Remember I come from the car word, and we only have choke on carbs
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post #2 of 24 (permalink) Old 11-14-2005, 10:00 PM
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Its not a choke. Its a fast idle.

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post #3 of 24 (permalink) Old 11-14-2005, 10:03 PM Thread Starter
 
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Why do I have a fast idle. Are the stock cam specs that lopey that it needs some extra air when cold???
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post #4 of 24 (permalink) Old 11-14-2005, 10:12 PM
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Like any motor, It is expected to run a little sloppy (fuel air atomization) till the heads and intake warm a bit. The FI compensates for the air fuel ratio but, that is not always enough.

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post #5 of 24 (permalink) Old 11-14-2005, 10:59 PM
 
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Quote:
Originally Posted by jeeps84
Like any motor, It is expected to run a little sloppy (fuel air atomization) till the heads and intake warm a bit. The FI compensates for the air fuel ratio but, that is not always enough.
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post #6 of 24 (permalink) Old 11-15-2005, 10:07 AM
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Not too mention it sure does speed up the warm up process!




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post #7 of 24 (permalink) Old 11-15-2005, 10:15 AM
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Quote:
Originally Posted by Gas Man
Not too mention it sure does speed up the warm up process!
Don't get carried away with it. I'm dought it would do any damage but, I don't like to raise the RPM's over what it needs to stay running.

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post #8 of 24 (permalink) Old 11-15-2005, 10:16 AM
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and you see that most people don't use it... as a matter of fact... most newer FI bikes don't come with it anymore...




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post #9 of 24 (permalink) Old 11-15-2005, 11:13 AM Thread Starter
 
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Quote:
Originally Posted by Gas Man
and you see that most people don't use it... as a matter of fact... most newer FI bikes don't come with it anymore...
Thats what I thought
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post #10 of 24 (permalink) Old 11-15-2005, 07:27 PM
 
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No idea but speaking of choking yo mammy doesn't have a gag reflex - I can personally atest to that fact..
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post #11 of 24 (permalink) Old 11-15-2005, 07:30 PM
 
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i dont bother with all that choke silliness. i just bump it off the rev limiter till its warm.

good question though, i didnt know some FI bikes even had that.
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post #12 of 24 (permalink) Old 11-15-2005, 09:32 PM Thread Starter
 
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Originally Posted by Mudpuppy
No idea but speaking of choking yo mammy doesn't have a gag reflex - I can personally atest to that fact..
ahhhhhhhhh .... a simple joke from a simple man..
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post #13 of 24 (permalink) Old 11-16-2005, 02:27 AM
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Quote:
Originally Posted by JK_DILLA
i dont bother with all that choke silliness. i just bump it off the rev limiter till its warm.

good question though, i didnt know some FI bikes even had that.
I didn't either 'till I saw my buddy's '03 GSX-R 600. He needs to use his until it warms otherwise it stalls.

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post #14 of 24 (permalink) Old 11-16-2005, 03:40 AM
 
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It's probable due to the fact that the ECU is set to automaticly enrichen the mixture on cold start up. Carb bikes naturaly still have to have choke but FI bikes can be just take a few sensor readings and adjust accordingly
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post #15 of 24 (permalink) Old 11-16-2005, 09:47 AM
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While this is true... the bikes don't have the adjustability that cars do. They don't have all the sensors like O2 to have the adjustability of cars. Just ask anybody that has rode the Skyway in NC!

Then the question is "do you really want that or would it be too much technology"?




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post #16 of 24 (permalink) Old 11-16-2005, 10:35 AM
 
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It shouldn't really be all that much technology. Just a reading from the oil temp sensor (for my bike at least it's in the heads. Don't know about your bikes.) with the computer set to enrichen the mix by a certin % till an ideal temp.

I don't know. At this point I'm just taking a shot in the dark. But it seems to make sence to me. Please someone let me know if I'm just talking out of my a$$

Z
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post #17 of 24 (permalink) Old 11-16-2005, 11:13 AM
 
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Quote:
Originally Posted by Monster231
Why do I have a fast idle. Are the stock cam specs that lopey that it needs some extra air when cold???

Buy a Honda and it isn't an issue...
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post #18 of 24 (permalink) Old 11-16-2005, 01:30 PM
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I could be wrong but I don't think they tie the oil temp into the FI on bikes....




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post #19 of 24 (permalink) Old 11-17-2005, 03:08 AM
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Quote:
Originally Posted by Gas Man
Just ask anybody that has rode the Skyway in NC!

Then the question is "do you really want that or would it be too much technology"?
What's the SkyWay got to do with FI. If your talking about lose of power. It doesn't matter what you have. The altitude will robe your power.

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post #20 of 24 (permalink) Old 11-17-2005, 08:00 AM
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That's what I'm saying... but do you expierence the same effect in your car? You car should have the ability to adjust more to the altitude...




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