Carb Synch Jumping Needles ??


Information and questions on GL1100 Goldwings (1980-1983)
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gdhubert
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Location: Charles Town, WV
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Carb Synch Jumping Needles ??

Post by gdhubert »



I want to synchronize my carburetors on my 1982 GL1100. Got the gauges hooked up and all. Idle is a bit rough and the needles are not very steady when idling. The needles shake and are not steady. Haven't touched carbs and don't really want to do a tear down/rebuild of them. I feel that is slightly outside of my skill level. Any suggestions?

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gdhubert
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Re: Carb Synch Jumping Needles ?? - update

Post by gdhubert »

Duh! RTFM - I didn't. Once I put in the little adjuster valves and adjusted them the shaking needles settled down.

My bad.
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WingAdmin
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Re: Carb Synch Jumping Needles ?? - update

Post by WingAdmin »

gdhubert wrote: Tue Sep 21, 2021 6:32 pm Duh! RTFM - I didn't. Once I put in the little adjuster valves and adjusted them the shaking needles settled down.

My bad.
You got it. The idea is to allow the engine pulses to smooth out by only letting a small amount through at a time. The larger the space in between the valves and the gauges, the better damping you get.

That's one of the reasons why I use a Carbtune Pro - its weighted, damped rods eliminate those vibrations and make it super easy to balance carbs.
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WingAdmin
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Posts: 23781
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (sold)
1998 XV250 Virago (sold)
2012 Suzuki Burgman 400 (wife's!)
2007 Aspen Sentry Trailer
Contact:

Re: Carb Synch Jumping Needles ??

Post by WingAdmin »

I actually covered the Carbtune Pro in this year's gift guide:



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gdhubert
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Joined: Sun Aug 08, 2021 10:16 pm
Location: Charles Town, WV
Motorcycle: 1982 Goldwing - Barn find rebuild

Re: Carb Synch Jumping Needles ??

Post by gdhubert »

Carbtune Pro is a great tool and I can see how it is probably easier to read and use - however $140 vs $54 - Guess I'm a cheapo!


Thanks,

Greg.
1982 GL1100 Barn find rebuild
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Dirtrack650
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Re: Carb Synch Jumping Needles ??

Post by Dirtrack650 »

I use the Mercury sticks. Very accurate.
Jumperdumper
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2005 Goldwing

Re: Carb Synch Jumping Needles ??

Post by Jumperdumper »

I tried the same type of gauges that you pictured but they were not accurate. They would not read the same so I bought 4 from McMaster that are oil dampened. I used the valves to help in the needle jumping
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