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-   -   Unusually High Idle RPM (https://www.superhawkforum.com/forums/technical-discussion-28/unusually-high-idle-rpm-23789/)

amhsraptor 09-16-2010 05:33 AM

Unusually High Idle RPM
 
Last night I went for a ride and my bike started up fine and was running normal except I noticed the idle was around 1500-1600 RPMs. I believe that is the normal idle range but my bike was idling from 1000 to 1100 on Tuesday. I tried pulling the choke to see if it had gotten caught and it didn't do anything and I am not sure what it could be. Bare in mind I am not a carburetor guy so I am still learning, and when I did a search I didn't see that many relevant topics.

For a little background information, I was using my bike to commute about 50 miles, both ways, a day since August 16th until yesterday when my truck was fixed.

Thanks in advance,

-BA

nath981 09-16-2010 05:56 AM

well reach under the tank from the right side and turn the plastic handled idle screw counterclockwise and get your idling back to 1000.

Tweety 09-16-2010 06:00 AM

Usually a high isle like that is the result of an airleak somewhere... Check all vacuum lines...

amhsraptor 09-16-2010 06:04 AM

Will do, what normally causes the idle screw to move/an airleak to occur? I am just curious because the other day it was running just fine. Could my bike is jealous of my truck?

Tweety 09-16-2010 06:08 AM

Nothing causes the screw to spontaneously move... Airleaks are mostly caused by dried out old hoses...

nath981 09-16-2010 06:09 AM


Originally Posted by amhsraptor (Post 281367)
Will do, what normally causes the idle screw to move/an airleak to occur? I am just curious because the other day it was running just fine. Could my bike is jealous of my truck?


i think you may have hit on something here. :D

inderocker 09-16-2010 07:55 PM

Could also be sticky, kinked, or misadjusted throttle cables. be sure they have the proper slack when turning the bars lock to lock.

8541Hawk 09-16-2010 08:21 PM

As it just happened overnight I would also have to believe it was a hose that split and caused a vacuum leak.

VTRsurfer 09-16-2010 08:24 PM

Or a carb fart blew it off.

loserbaby 09-17-2010 04:19 AM

air leak, failed hose IS most likely.

trinc 09-17-2010 06:25 AM

choke has no effect when pulled, i'd start by looking there.
maybe the tension adjustment... ?


tim


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