Engine Clunking: Carb or Clutch??


Information and questions on GL1100 Goldwings (1980-1983)
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Ol'Toyo
Posts: 5
Joined: Sun Sep 09, 2012 12:37 am
Location: Kelowna, British Columbia, Canada
Motorcycle: 1981 Gl1100

Engine Clunking: Carb or Clutch??

Postby Ol'Toyo » Wed Sep 19, 2012 5:02 pm



I have a 1981 gl1100. The bike has 46,xxx KM's. I know the bike has had extended periods of sitting.

When I'm taking off from a standstill, unless I rev the engine up to at least 2000rpm's, the engine makes a horrible clunking sound and almost seems to stall. Starting on slight hills(my driveway) exacerbates the problem even more. I thought for sure that you'd almost be able to let the clutch out with minimal throttle and it should roll away fine.

I've run 2 1/2 tanks of 94 octane chevron gas with a half can of sea foam to see if the carbs needed to be loosened up. It seams to have made a small improvement if any. My front right cylinder was running way too rich before the seafoam and now it's a bit better but still needs to be addressed.

Im starting to wonder if this could be a clutch issue. How long are clutch's supposed to last? If the speedo has been rolled over I'm sure it probably is near it's end.

I'm still thinking it is a carb issue as clutch's are beyond my scope of practice as a mechanic. Any ideas as to what this could be???
Thanks guys!



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scotterichmond
Posts: 613
Joined: Fri May 06, 2011 3:49 pm
Location: Marblemount,wa
Motorcycle: 1975 GL1000
[img]http://images.goldwingdocs.com/scotterichmond_32376/Modestly_restored_1975_GL1000_750/engine_repainted_even_new_embl_3919.jpg[/img]

Re: Engine Clunking: Carb or Clutch??

Postby scotterichmond » Wed Sep 19, 2012 5:05 pm

sitting is the worst possible thing for these bikes. do the carbs ( they will need it)

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seabee_
Posts: 494
Joined: Sun May 29, 2011 8:17 pm
Location: sterling heights, mi
Motorcycle: 1985 Honda Goldwing GL1200
117k miles
1977 Kawasaki kz400
1978 Suzuki GSXr750
1980 Kawasaki GPZ400
1975 Honda CB360T

Re: Engine Clunking: Carb or Clutch??

Postby seabee_ » Thu Sep 20, 2012 2:23 am

Yes, do the carbs and then do a carb sync. Unbalanced carbs will cause this issue.
Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic

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dnehasert
Posts: 132
Joined: Sun Sep 27, 2009 11:25 pm
Location: Mesa AZ.
Motorcycle: 1982 GL1100 with Watsonian sidecar

Re: Engine Clunking: Carb or Clutch??

Postby dnehasert » Tue Sep 25, 2012 9:44 am

That is fairly normal on the 1100's, slowly let out the clutch as you give it gas.I have had 3 1100's with a sidecar and it will always chatter under heavy load such as a hill.

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Ol'Toyo
Posts: 5
Joined: Sun Sep 09, 2012 12:37 am
Location: Kelowna, British Columbia, Canada
Motorcycle: 1981 Gl1100

Re: Engine Clunking: Carb or Clutch??

Postby Ol'Toyo » Tue Sep 25, 2012 5:21 pm

Thank you all for the suggestions of my goldwings poor performance upon acceleration.
After realizing that some carb work was a bit daunting for me(I've never opened a carb up in my life) I took it in to "Keep Riding Motorsports" in Kelowna, British Columbia,Canada.

Apparently one cylinder was firing intermittently(from a bad spark plug cap). The carb synchronisation was the worst he's ever seen, so he synched the carbs too. He then adjusted the air mixture and set the idle.

Now my baby purrs like a sewing machine, I barely have to give it gas to let go of the clutch and it FLYS!!!

BEST TWO HUNDRED BUCKS I EVER SPENT. BRAKES ARE NEXT!

User avatar
seabee_
Posts: 494
Joined: Sun May 29, 2011 8:17 pm
Location: sterling heights, mi
Motorcycle: 1985 Honda Goldwing GL1200
117k miles
1977 Kawasaki kz400
1978 Suzuki GSXr750
1980 Kawasaki GPZ400
1975 Honda CB360T

Re: Engine Clunking: Carb or Clutch??

Postby seabee_ » Tue Sep 25, 2012 6:21 pm

Glad to hear you fixed the problem. Now you can start having fun. Enjoy the riding.


Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic


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