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Old 03-10-2013, 02:08 AM   #1
plasm800
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F4i Idle Issue

I'm not sure what forum to post this under, but since it's a stunt bike, I figured this would be appropriate. So I took my 2001 F4i to the lot today, and it was acting weird from the start. It was idling low and the idle wouldn't turn up at all. If I pulled in the clutch all the way, the bike would often die if I wasn't giving it gas. When I tried to clutch it up into a wheelie it had basically no low end power whatsoever. What could be causing this?
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Old 03-10-2013, 02:57 AM   #2
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Quote:
Originally Posted by plasm800 View Post
I'm not sure what forum to post this under, but since it's a stunt bike, I figured this would be appropriate. So I took my 2001 F4i to the lot today, and it was acting weird from the start. It was idling low and the idle wouldn't turn up at all. If I pulled in the clutch all the way, the bike would often die if I wasn't giving it gas. When I tried to clutch it up into a wheelie it had basically no low end power whatsoever. What could be causing this?
This part was wrong, it was running fine until it warmed up, after riding for about 5 minutes it started having issues with the idle.
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Old 03-10-2013, 05:14 AM   #3
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Have you worked in it in the past few days, where you might have left something unplugged?

How does your air filter look? What rpms are you idleing at?
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Old 03-10-2013, 09:04 AM   #4
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Fuel pressure regulator possibly.
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Old 03-10-2013, 11:12 AM   #5
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maybe you have the idel set too low?
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Old 03-10-2013, 12:22 PM   #6
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maybe you or somebody turned the idle screw out a little too much and it came out of the threads. Does the bike have second idle cable? I would address the adjustability issue then look into fpr. If you pull the vacuum line on the fpr and see gas in the line, you need to replace fpr. at idle speed the air intake would have to be almost completely blocked off to affect idle.
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Old 03-10-2013, 03:07 PM   #7
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Quote:
Originally Posted by jakeg View Post
Have you worked in it in the past few days, where you might have left something unplugged?
I have not, I think I am just going to take it into the shop since I have minimal experience with mechanics.

Quote:
How does your air filter look? What rpms are you idleing at?
The bike doesn't have a gauge cluster but after I rode for a while and the bike warmed up I would guess it was idling under 1k.

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maybe you have the idel set too low?
I tried changing the idle but nothing happened whatsoever. It wouldn't go up or down.
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Old 03-11-2013, 06:18 PM   #8
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check your FPR.. and if your stunting i would dive into it yourself cus this stuff is going to happen all the time..
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Old 03-12-2013, 10:53 AM   #9
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I still think you unscrewed the idle cable.
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Old 03-12-2013, 11:10 AM   #10
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Quote:
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I still think you unscrewed the idle cable.
I agree. Check that first. You can check it easy.
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Old 03-12-2013, 09:57 PM   #11
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Quote:
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I agree. Check that first. You can check it easy.
Would that cause me to lose tons of low end power and make the throttle unresponsive?
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Old 03-13-2013, 01:41 PM   #12
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I wouldn't think so.
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