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Old 02-22-2007, 03:43 PM   #1
tommcbride OP
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Airhead Idle/Air Screw...passing on what I learned

Hey gang~ In the interest of future problem solving and the power of this forum and using it for diagnostics I thought I would share this info:

The Bike: 1985 R80G/S
The Problem: Unable to sync carbs and very lazy to get engine to idle down with throttle closed.



The remedy: The tip of the idle air screw broke off in the oriface and occluded the opening.
Causing the above symptoms.

I hope all find this useful.
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Old 02-22-2007, 03:52 PM   #2
SOLO LOBO
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Thanks Tom !


btw, know anyone with an R80G/S for sale?
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your bike is suitably dirty. Well done.
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Old 02-22-2007, 04:54 PM   #3
opposedcyljunkie
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Quote:
Originally Posted by tommcbride
I hope all find this useful.

hey tom, is that you? the guy who bought a pair of /2 mufflers from me in manila? that's an impressive list of bikes you have there!

rico c.
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Old 02-22-2007, 05:16 PM   #4
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I hope you put a new O-ring on those things.

Good call, though. I'd never heard of that happening.
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Old 02-22-2007, 05:29 PM   #5
tommcbride OP
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SoloLobo~ Sorry no I dont know anyone with one for sale, I've always got my 's on though.
OCJ~ RICO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!
Yes it's me, welcome to this forum buddy.
I LOVE the silencers you made me and they are excellent!!!!!
Kbase~ Yes the Orings were replaced, thanks, I took the photo before I replaced them.
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Old 02-22-2007, 06:38 PM   #6
opposedcyljunkie
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Quote:
Originally Posted by tommcbride
I LOVE the silencers you made me and they are excellent!!!!!

Glad to know they're holding up pretty well, and also that you're doing great! I just got a 92 R100GSPD last Saturday so I must warn everyone that I have a ton of questions forthcoming...

Catch you later...
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Old 02-22-2007, 08:09 PM   #7
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Quote:
Originally Posted by opposedcyljunkie
Glad to know they're holding up pretty well, and also that you're doing great! I just got a 92 R100GSPD last Saturday so I must warn everyone that I have a ton of questions forthcoming...

Catch you later...
That's GREAT to hear!
This forum has excellent resources and very knowlegable persons.
Be forewarned that I'll need an expereinced guide when I come to visit!
So you'd better get familiar with the backroads.
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Old 02-22-2007, 08:15 PM   #8
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Quote:
Originally Posted by SOLO LOBO
Thanks Tom !


btw, know anyone with an R80G/S for sale?
http://www.advrider.com/forums/showthread.php?t=206951

You probably already saw this one but here it is anyway~
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Old 02-23-2007, 12:12 AM   #9
opposedcyljunkie
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Quote:
Originally Posted by tommcbride
That's GREAT to hear!
This forum has excellent resources and very knowlegable persons.
Be forewarned that I'll need an expereinced guide when I come to visit!
So you'd better get familiar with the backroads.

give me a holler when you do. i'll take you to places where only a GS can get to
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Old 02-23-2007, 01:43 AM   #10
Flood
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Quote:
Originally Posted by kbasa
Good call, though. I'd never heard of that happening.
I saw this happening on 3 of 4 carbs on a '78 Suzuki GS750. That's why every service manual advises you to seat the air screws only slightly before turning them out again.
There are a lot of guerilla mechanics out there who like to screw everything in as hard as possible- this is exactly what happens then.

BTW, it's a royal PITA to remove the broken tips from the carb body.
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Old 02-23-2007, 07:39 AM   #11
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Quote:
Originally Posted by Flood
BTW, it's a royal PITA to remove the broken tips from the carb body.
The one I removed took a bit of force, but with the correct tools and the correct application of force it popped out.

I used a right angle scribe/pick (with a pin point tip) and Medium sized channel locks, slid the rubber boot on the outer flange/lip of the carb and squeezed the pick with the channel lock and used the rubber on the outer side of the carb to apply just enough force to persuade it to stop occupying the space that it was not intended to completely occlude.

I do believe I had just a bit of luck as well
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Old 02-23-2007, 07:40 AM   #12
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Quote:
Originally Posted by opposedcyljunkie
give me a holler when you do. i'll take you to places where only a GS can get to
You have PM
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