while on the track of a surgeing Idle


Information and questions on GL1500 Goldwings (1988-2000)
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Rob98801
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Location: Wenatchee,WA
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while on the track of a surgeing Idle

Postby Rob98801 » Thu Oct 10, 2013 5:15 pm



First the facts:
96 1500SE with 74000+ miles, runs great but has the surge problem at idle. Compression 150psi on all six, great color on all spark plugs. :D

From the tests I done looks like I'll be pulling the carb. :(

on visual inspection I see a loose connector (pic 1) which I assume should be hooked up as circled in Pic 2.? :?:


Also in the third picture can someone tell me where this pipe runs to or its purpose?


Any hints for pulling the carbs? Don't do's, Be sure to do's

Sorry for the long winded post.

Rob
North Central Washington State



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ct1500
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Re: while on the track of a surgeing Idle

Postby ct1500 » Thu Oct 10, 2013 5:44 pm

You now know why your cruise control did not work, that is the cable from the actuator.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

Rob98801
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Re: while on the track of a surgeing Idle

Postby Rob98801 » Thu Oct 10, 2013 5:52 pm

ct1500 wrote:You now know why your cruise control did not work, that is the cable from the actuator.



Thanks! That's more Item off the list of todo's :D

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dingdong
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Re: while on the track of a surgeing Idle

Postby dingdong » Fri Oct 11, 2013 7:04 am

Under the carbs and under the rubber mat there is a vacuum hose with a 90 degree elbow. That is probably the cause of your surging idle.
Tom

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virgilmobile
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Re: while on the track of a surgeing Idle

Postby virgilmobile » Fri Oct 11, 2013 7:09 am

Usually surging is associated with a vacuum leak or a partially open "choke".
Every 25 year old hose is suspect.Especially the ones with the sharp 90* bend.There are 7 of them,at least.
There is also one UNDER the rubber mat under the carbs.
The little brass piece is a air control port.you won't see any gas there.

Rob98801
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Re: while on the track of a surgeing Idle

Postby Rob98801 » Fri Oct 11, 2013 9:59 am

virgilmobile wrote:The little brass piece is a air control port.you won't see any gas there.


Thanks I note that if I plug these two ports the surge stops and the idle levels out.

So today I pull the carbs :( :(


Rob
North central Washington state

Rob98801
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Joined: Fri Aug 30, 2013 7:36 pm
Location: Wenatchee,WA
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Re: while on the track of a surgeing Idle

Postby Rob98801 » Fri Oct 11, 2013 4:45 pm

So this is what they call fun? :o

Finally got the carbs out. Now to dig deeper.
For those that haven't been there here is a picture of the top of the manifold less the grey cover.


Rob
North Central Washington State

Rob98801
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Re: while on the track of a surgeing Idle

Postby Rob98801 » Sun Oct 13, 2013 3:53 pm

Does anyone have a drawing of the rubber mat that goes on top of the manifold? Starting to put everything back together and can not get the mat to lay right. I need a picture or a drawing of the correct way to install the little *&^&**%!

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WingAdmin
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Re: while on the track of a surgeing Idle

Postby WingAdmin » Mon Oct 14, 2013 11:08 am

Rob98801 wrote:Does anyone have a drawing of the rubber mat that goes on top of the manifold? Starting to put everything back together and can not get the mat to lay right. I need a picture or a drawing of the correct way to install the little *&^&**%!


Closest thing I could find is the drawing in the service manual. Doesn't show much, as it's an exploded diagram.


Rob98801
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Re: while on the track of a surgeing Idle

Postby Rob98801 » Mon Oct 14, 2013 1:21 pm

Yep, I have the same drawing, Like you say not much for details. I guess I'll just take my best shot and see what happens.

Rob
North Central Washington State

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m2102
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Re: while on the track of a surgeing Idle

Postby m2102 » Mon Oct 14, 2013 3:30 pm

I had a surge In the idle 2years ago and I know you are way into your search at the carb level but suggested to me, and can't remember by who, with engine off, under the fuel door is the idle adjustment knob,twist the throttle all the way and remembering where the knob is positioned, turn the knob to the right, then all the way to the left,doesn't matter which is first, then back to were it was. I did that to mine and haven't had that surge since

Rob98801
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Re: while on the track of a surgeing Idle UPDATE

Postby Rob98801 » Wed Oct 16, 2013 8:43 pm

On the down hill putting the plastic back on. Man what a job, never going that deep again!

Found one vacuum hose cracked and replaced. It wasn't in the idle circuit and the other hoses were as new.
The one item that did show up was the choke which was way out of adjustment.
Idles at 800 with no surge, I am going to set the idle to 1000 after a few days of driving around.

Rob
North Central Washington State

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virgilmobile
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83 GL1100 standard
84 GL 1200 I

Re: while on the track of a surgeing Idle

Postby virgilmobile » Thu Oct 17, 2013 6:50 am

The 1500 doesn't mind idling at 800.Its about normal.
The 1000-1100 & 1200 needed the 950 to keep charging the battery.
My 83 would idle smooth down to 400 rpm.
You could hear every cylinder thumping.

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m2102
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Re: while on the track of a surgeing Idle

Postby m2102 » Thu Oct 17, 2013 7:55 am

+1 virgilmobile. I believe the norm is 800-850 idle rpm on the 1500

Rob98801
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Re: while on the track of a surgeing Idle

Postby Rob98801 » Thu Oct 17, 2013 11:12 am

Sorry, thinking got behind fingers :oops: , should have said "idles at 1000 rpm with no surge, I am going to set the idle to 800 after a few days of driving around.


Rob
North Central Washington State




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