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Old 03-08-2007, 11:01 PM   #1
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F4i wont hold idle... any thoughts?

Starts and runs fine but as long as i have been riding it, it has had this issue.

I can idle it up but i have to twist the throttle for it to react to the changes.
once it is idled up it will only hold the idle for about 1 minute.
and it has a hard time holding it at all if it is in gear.

any thoughts, suggestions?
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Old 03-08-2007, 11:04 PM   #2
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lol

burn it marcus would lol :laughing6 jk

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Old 03-08-2007, 11:09 PM   #3
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oh.. BTW

i also put new throttle bodies on it today with new vacume hoses and injectors and fuel rail and the sensor on the end of the and the thing that holds the wax unit dilly wapper.. and ... i think thats it.

issues i am aware of..

cheap spark plugs and cheap gas...

but i dont knwo why either of those would make the idle come down on its own. ??
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Old 03-08-2007, 11:11 PM   #4
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My 250 had a simular problem. Run a new tank of gas through it, that might fix it like it fixed mine
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Old 03-08-2007, 11:14 PM   #5
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Quote:
Originally Posted by Clayton9698
oh.. BTW

i also put new throttle bodies on it today with new vacume hoses and injectors and fuel rail and the sensor on the end of the and the thing that holds the wax unit dilly wapper.. and ... i think thats it.

issues i am aware of..

cheap spark plugs and cheap gas...

but i dont knwo why either of those would make the idle come down on its own. ??
try some good plugs it is your daily stunter after all
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Old 03-08-2007, 11:35 PM   #6
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double check your vacuum lines
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Old 03-08-2007, 11:36 PM   #7
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Old 03-08-2007, 11:37 PM   #8
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Clayton,
Give me a shout tomorrow and I'll go over a couple of things for you to check.
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Old 03-08-2007, 11:57 PM   #9
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Quote:
Originally Posted by c0rey
double check your vacuum lines
done.. i have the owners manual right here. all on right. 1 questionable because it never says where it goes.. but there is only 1 spot to put it.
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Old 03-09-2007, 10:25 AM   #10
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sooooooooo... anyone else?
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Old 03-09-2007, 10:48 AM   #11
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Do you have good throttle response??
YOu might need to sync your TBs, butterflys might be closing too much???
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Old 03-09-2007, 10:56 AM   #12
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throttle response if fine.. it runs good, just wont hold the idle.
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Old 03-09-2007, 03:38 PM   #13
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Old 03-09-2007, 03:39 PM   #14
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MSF?
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Old 03-09-2007, 03:41 PM   #15
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Old 03-09-2007, 03:42 PM   #16
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my r6 had kinda the same problem but i ran a fuel injector cleaner and a new tank of gas through it and it was fixed
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Old 03-09-2007, 03:57 PM   #17
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new plugs and some good gas and we will see
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Old 03-09-2007, 04:30 PM   #18
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I would say +1 to synching your throttle bodies. and double checking all screws and lines. Even a slight vacuum leak at an injector will cause problems. Try squirting some wd40 around possible leak points while running to find any leaks.
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Old 03-09-2007, 04:54 PM   #19
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Old 03-09-2007, 04:56 PM   #20
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theres actually a method you can do for idle up on your f4i. theres a how to on stuntlife....and i believe it fixes this problem.
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