Knocking again !!


Information and questions on GL1100 Goldwings (1980-1983)
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knockdolian
Posts: 15
Joined: Sun Oct 04, 2015 3:36 pm
Location: somerset
Motorcycle: 1982 Gl1100

Knocking again !!

Post by knockdolian » Sun Oct 04, 2015 3:54 pm



Hi all, new to this forum so be nice !!! I have a knocking at idle but it goes as I reach 1500 revs. I have balanced the carb but still there. My question is, if the idle jet is blocked or slightly blocked will it still idle. if yes but poorly would I still be able to sync the carbs and still have the knock. This bike has been stood for about 5 years.
Cheers



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Aussie81Interstate
Posts: 834
Joined: Thu Nov 27, 2014 2:34 am
Location: Penrith Australia
Motorcycle: 1982 CX500 Turbo (restoration project)
1981 GL1100 Interstate (sold)
1988 GL1500

Re: Knocking again !!

Post by Aussie81Interstate » Sun Oct 04, 2015 5:12 pm

The bike will still idle- but there will be a knock if the carbs are not balanced. When the carbs are cleaned thoroughly then when you re-set the balance, the knock will quickly disappear.

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dingdong
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Knocking again !!

Post by dingdong » Mon Oct 05, 2015 7:35 am

If the idle circuits are clogged the carbs can't be synced properly.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

knockdolian
Posts: 15
Joined: Sun Oct 04, 2015 3:36 pm
Location: somerset
Motorcycle: 1982 Gl1100

Re: Knocking again !!

Post by knockdolian » Mon Oct 05, 2015 8:26 am

dingdong wrote:If the idle circuits are clogged the carbs can't be synced properly.
I agree with what you say in part. The way I see it. sync measures the amount of air being drawn in on the downward stroke which is regulated by the butterfly valve. It will still sync if no fuel is being collected on the way through ?? Or am I wrong. I'm

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dingdong
Posts: 3121
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Knocking again !!

Post by dingdong » Tue Oct 06, 2015 8:13 am

That's true so the keyword here is "properly".
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

knockdolian
Posts: 15
Joined: Sun Oct 04, 2015 3:36 pm
Location: somerset
Motorcycle: 1982 Gl1100

Re: Knocking again !!

Post by knockdolian » Tue Oct 06, 2015 3:40 pm

dingdong wrote:That's true so the keyword here is "properly".
Point taken :oops:
Thanks



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