REBUILD CARBS WON'T IDLE RIGHT DOWN


Information and questions on GL1100 Goldwings (1980-1983)
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auctioneeral
Posts: 300
Joined: Thu Sep 25, 2014 8:05 pm
Location: shamong, New Jersey
Motorcycle: 1981 GL1100 nake
1981 GL1100 full dresser
Both getting restored

REBUILD CARBS WON'T IDLE RIGHT DOWN

Postby auctioneeral » Sun Aug 16, 2015 11:29 am



Ok guy's, pulled the single off and mounted the 4 carbs and a deep cleaning and new air cut offs, idle jets cleaned. When I rev it up, it takes a while to return to idle. I have sprayed carb cleaner all over the carb intake and around vaccum hose and no change in the sound of motor.
Could that be in the vaccum piston not sliding.
I have the carbs syn.
Here's a short video of it.





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RBGERSON
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Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: REBUILD CARBS WON'T IDLE RIGHT DOWN

Postby RBGERSON » Sun Aug 16, 2015 12:08 pm

Does the throttle cable SNAP back??? Clean and lube check routing?? Slides sticking too..but others say that won't do it I disagree...
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

indianakid
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Joined: Sun Sep 26, 2010 5:28 pm
Location: long beach, ca
Motorcycle: 83 GL1100 I

Re: REBUILD CARBS WON'T IDLE RIGHT DOWN

Postby indianakid » Sun Aug 16, 2015 1:52 pm

OK....... the problem is not all cylinders are firing. by listening to the video sounds like only one is hitting. by the vacuum gauges it can be seen that the throttle plates are open more than they should be at an idle. the vacuum reading at an idle on a GL1100 should be around 10 inches. in the video it appears to be around 2 to 3 inches. which would make sense if only one (or two) cylinders are firing. as that cylinder is doing all the work it will take a greater throttle opening. the slides would not cause this condition. they control the rich / lean fuel mixture and keeps the velocity / vacuum in the venturi constant (not to be confused with the vacuum in the intake that is controlled by the throttle plate). the condition you have is cause by the idle circuits not functioning properly. you have an 81 that would have pressed in idle jets. these will have to be removed (being careful not to damage them) in order to clean them. there are air bleed holes along the sides (idle emulsion tube) that cant be cleaned and inspected with out removal.

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auctioneeral
Posts: 300
Joined: Thu Sep 25, 2014 8:05 pm
Location: shamong, New Jersey
Motorcycle: 1981 GL1100 nake
1981 GL1100 full dresser
Both getting restored

Re: REBUILD CARBS WON'T IDLE RIGHT DOWN

Postby auctioneeral » Sun Aug 16, 2015 3:01 pm

#2 cylinder is just warm to touch. All other 3 hot to touch. So its got to be in #2 carb. Vaccum reading is 1-2 lbs. as show in picture.
So I guess I will pulll carbs again which will be my very last time be going up for sale.
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auctioneeral
Posts: 300
Joined: Thu Sep 25, 2014 8:05 pm
Location: shamong, New Jersey
Motorcycle: 1981 GL1100 nake
1981 GL1100 full dresser
Both getting restored

Re: REBUILD CARBS WON'T IDLE RIGHT DOWN

Postby auctioneeral » Sun Aug 16, 2015 7:35 pm

#2 plug is white. #1,3,4 plugs are black rich. I pulled carbs again. All the jets are cleaned. I'm going to readjust all the floats, because #2 was like 10.25mm and #4 is 17.50mm.

User avatar
auctioneeral
Posts: 300
Joined: Thu Sep 25, 2014 8:05 pm
Location: shamong, New Jersey
Motorcycle: 1981 GL1100 nake
1981 GL1100 full dresser
Both getting restored

Re: REBUILD CARBS WON'T IDLE RIGHT DOWN

Postby auctioneeral » Wed Aug 19, 2015 12:40 pm

Well i got to do electric work. I only got about 10.5v at coils. Only 11v at fuse box. So I'm starting at battery and checking all wiring. Only check electrical because bike is not firing on all cylinders.
Looking at drawing from battery plus to key switch 12v and from same plug 12v going into regulator.




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