High Idle! Need Help Quickly! - Sportbike Forum: Sportbike Motorcycle Forums
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post #1 of 5 (permalink) Old 09-03-2005, 08:29 AM Thread Starter
Join Date: Aug 2005
Posts: 980
High Idle! Need Help Quickly!

First off let me apologize for posting this in the wrong forum but this forum gets the most viewers so I figured this was probably the best place for a quick response.

When I first bought my bike (94 katana 750) it would idle at a reasonable rpm when you first started it up, around 1500 or 2k. However after a little riding it would quickly start idleing at 5k at stop lights and in traffic. I heard from a few different people that the problem was most definatly the carborator. A buddy of mine just got done rebuilding the carborator, changing the oil, and changing the spark plugs. However when he started it up yesterday it was idling at about 3500 he said. He shut it off and messed with the idle switch, turned it about a quarter turn I believe, however now the bike doesnt want to start up according to him, and he cant seem to get to it start after messing with the idle (I believe the idle screw only works when it wants to). He said that the problem is not with the spark plugs because it gets a great arc. Hopefully the idle and throttle cable just need a little finese to get to the right place but anyone else have any ideas about where another problem could be occuring?

I am in such a rush becuase my road test is on thursday and I am afraid my bike wont even be running. I dont have anyone elses bike to use either. Please please help, I am in much distress.
slick1537 is offline  
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post #2 of 5 (permalink) Old 09-03-2005, 09:04 AM
Join Date: Jul 2005
Posts: 12
I had a bike that was hard to control the idle and it turned out ot be the choke cable. It was corroded and would hold the choke open. You might want to try lubing the cable. You can use a pressure luber bought at any automotive store along with a good can of lubricant/break free. I don't know for sure if that is what it is but it is a quick and easy check.
Hvtr1000cg01 is offline  
post #3 of 5 (permalink) Old 09-03-2005, 09:20 AM
Join Date: Mar 2005
Posts: 624
I dunno, but make sure none of the throttle cables are "sticking". If you do get it to start, turn the handlebars all the way to the left, then right, and see if the idle changes in any way. My first reaction is "throttle cable"...
Mystery Squid is offline  
post #4 of 5 (permalink) Old 09-03-2005, 01:43 PM Thread Starter
Join Date: Aug 2005
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I don't think its either of those but I will tell my buddy so he can rule them out. Just because the rpms will go down when you turn the choke off in the morning, but again, maybe it is still getting stuck somewhere. For the throttle cable sticking I never had a problem when I was riding it around, but ill get it checked out. Thanks guys, keep the suggestions comming.
slick1537 is offline  
post #5 of 5 (permalink) Old 09-04-2005, 04:08 AM Thread Starter
Join Date: Aug 2005
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Bump, probably against the rules but I need help . Where is vash when you need him, he is my hero...
slick1537 is offline  
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