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Main Area => General GS500 Discussion => Topic started by: numnutz on June 23, 2010, 05:34:42 PM

Title: Runs fine above 2500 RPMs won't run below
Post by: numnutz on June 23, 2010, 05:34:42 PM
Making progress but the bike still won't idle but runs great above 2500 RPMs. It doesn't help if the choke is on or off. I've been told to check the idle circuit in the carbs? I will definitely do that but any other ideas?
Title: Re: Runs fine above 2500 RPMs won't run below
Post by: 007brendan on June 23, 2010, 05:49:35 PM
Does adjusting the choke do anything?  How long have you let it warm up before trying to brink it below 2500 RPM?  I'm wondering if your choke is simply not working.
Title: Re: Runs fine above 2500 RPMs won't run below
Post by: Jabilli on June 23, 2010, 06:03:01 PM
Not exactly sure if these guys have them or not, but I remember my old aircooled VW wouldn't idle properly- There was an electric solenoid in the carb that wasn't hooked up properly... Maybe something similar on these things?
Title: Re: Runs fine above 2500 RPMs won't run below
Post by: numnutz on June 23, 2010, 06:42:03 PM
Choke works well. I let it warm up for probably around 5 mins.
Title: Re: Runs fine above 2500 RPMs won't run below
Post by: xanthras on June 23, 2010, 06:56:57 PM
Sounds like a plugged pilot jet to me. Its the tiny one. They are he first ones to clog. I would start there.
Title: Re: Runs fine above 2500 RPMs won't run below
Post by: 007brendan on June 23, 2010, 06:59:58 PM
I think you're original diagnosis of clogged idle jets is probably right.  Might as well just give the carbs a good cleaning anyway.
Title: Re: Runs fine above 2500 RPMs won't run below
Post by: tt_four on June 23, 2010, 07:17:37 PM
I would just set the idle at 2600 rpm and call it a day  :cookoo:
Title: Re: Runs fine above 2500 RPMs won't run below
Post by: The Buddha on June 23, 2010, 08:50:59 PM
2500 ... you may have a vacuum leak.
You got the new jets installed by jared dont you ... you have the issue before that too ?
Cool.
Buddha.
Title: Re: Runs fine above 2500 RPMs won't run below
Post by: Jared on June 24, 2010, 03:00:06 PM
I suggested a vacuum leak  or something still in the ports in the carbs.Yeah new pilots,  mains and washers under the needles....3 turns out on mixture screws and a cleaning...No bike- just the carbs on the bench so no test run here at my place ...   

Go over everything again installation wise...double check all your lines (there are a lot of them compared to the older bikes..).

We'll figure out a way to get your bike here  soon if you can't get it straight.