knocking noice when reving gl 1100


Information and questions on GL1100 Goldwings (1980-1983)
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knocking noice when reving gl 1100

Postby webber » Tue Jul 24, 2012 10:39 pm



hello just got a gl 1100 that sat for a few year becouse the guys coult not get it to go so after putting the pluge wires back on the bike started right up things are still a little stiff but slowing working the pproblen is when the bike sits at idel there is a knocking sound witch shem to becoming from trany shaft area it will go a way when you get the rpm up over 3-4 thou any ideas



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littlebeaver
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Re: knocking noice when reving gl 1100

Postby littlebeaver » Tue Jul 24, 2012 10:57 pm

I would say to pull the carbs and remove the main jets and clean them then unscrew the idle jets and do the same. Try that but you really need to sync. the carbs, too..

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Re: knocking noice when reving gl 1100

Postby seabee_ » Wed Jul 25, 2012 12:00 pm

Yep. Needs a carb sync. Should probably rebuild them if it has never been done. If the carbs are unbalanced you will get a knock.
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Wingsconsin
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Re: knocking noice when reving gl 1100

Postby Wingsconsin » Fri Jul 27, 2012 9:56 am

Our new-to-us 1980 GL1100 Interstate has a slight "knock" when the revs just start..
Crack the throttle, hear the quick rattle/knock and then the revs go up and all is well and quiet...
Carb synch in the future...but need to build/acquire the tool...
Reading the how to sections has been very helpful, and it seems the 2 guage method would work fine to sync carbs, but is a 4 guage way to go better - if I have to create or buy one anyway why not just do the 4 place ..?
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hockeystuff54
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Re: knocking noice when reving gl 1100

Postby hockeystuff54 » Sat Jul 28, 2012 12:08 pm

does it do it in first gear ,mine does so let me know what ya find ,tks

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Re: knocking noice when reving gl 1100

Postby bbells » Sat Jul 28, 2012 8:17 pm

I bought 4 gauges, but when i tried the 2 gauge method it was all i needed.

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Wingsconsin
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Re: knocking noice when reving gl 1100

Postby Wingsconsin » Sat Jul 28, 2012 10:33 pm

Today we did a couple of things that helped a lot...

Changed oil
Synced carbs
Raised Idle from about 650 to 950

The carb sync did the most to "cure" the problem. The #4 was WAY out and that was where I was hearing the noise...Next week or so I will do a valve adjustment and re-sync the carbs again..
I bet that will about take care of it...

Sync'ed carbs seem to make a great performance difference on these 1100's...! ;)



Postings are my opinions based on experience and acquired knowledge.
Your results may vary. Universal disclaimers apply.


Motorcycle Adventure Storys writen by me
http://neverlost-justexploring.blogspot.com/


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