Groaning 89' 1500


Information and questions on GL1500 Goldwings (1988-2000)
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bobilldo
Posts: 5
Joined: Sat Dec 01, 2012 4:53 pm
Location: Fremont, Ca.
Motorcycle: 1989 Gl1500/sidecar
2002 Silverwing FSC 600/sidecar
2008 Can-Am Spyder

Groaning 89' 1500

Postby bobilldo » Thu Mar 14, 2013 2:34 am



Hi all,
I have 89' 1500, 27k on the clock, that groans after I shut it off. It runs at normal temps. It has all new belts, air filter, fuel filter, service just done. It runs strong. ... (Also, I notice that when I open the gas cap, there is a "vacuum-sucking air" sound.) My hearing ain't what it used to be, so I can't tell exactly where the low, pressurised groan, is coming from. Any hints ?
Thx,
Bobilldo



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Sempai
Posts: 295
Joined: Wed Mar 10, 2010 12:30 am
Location: Wichita, KS
Motorcycle: '94 GL1500SE
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Re: Groaning 89' 1500

Postby Sempai » Thu Mar 14, 2013 7:47 am

I have a suspicion. You may have found your groan and just not noticed you've found it.
Kawasaki sportbikes are notorious for 'groaning' after a ride. Park the bike, shut the engine off, and sometime afterwards, it begins to groan a whisper-quiet creeking noise? The noise is air seeping back into the gas tank through the vented cap...opening the fuel cap results in a quick vaccuum puff (as you describe when you remover your cap,) and the termination of the groan.
Question for you: have you ever heard your groan and then opened the fuel cap? Or, perhaps is that when you've noticed the groaning most?...right when you've opened the fuel door to access the cap?...thereby removing all the barriers muffling the noise?
Keep the rubber side down.

bobilldo
Posts: 5
Joined: Sat Dec 01, 2012 4:53 pm
Location: Fremont, Ca.
Motorcycle: 1989 Gl1500/sidecar
2002 Silverwing FSC 600/sidecar
2008 Can-Am Spyder

Re: Groaning 89' 1500

Postby bobilldo » Thu Mar 14, 2013 11:58 am

Thanks for your suggstion Sempai. I'll take it for a ride today, and if I experience the groaning sound again, I will remove the gas cap, and see if that is the problem. ... My bike has a 265 lb. Hannigan sidecar attached. I'm only getting 21 mpg. I've asked the Honda dealer to balance the carbs, etc, but they say it doesn't need it. I've already got over 17k invested in this old 89. (New to me.) I've had a 4 degree trigger wheel installed. It idles at about 1,100 rpm. :(

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Sempai
Posts: 295
Joined: Wed Mar 10, 2010 12:30 am
Location: Wichita, KS
Motorcycle: '94 GL1500SE
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Re: Groaning 89' 1500

Postby Sempai » Thu Mar 14, 2013 12:07 pm

You can balance them yourself with 2 or 4 cheap vacuum gauges from any auto parts store and 2 or 4 home made vacuum ports made from a single piece of 5/16? Steel brake line that u can also get at the aforementioned store.
Keep the rubber side down.

bobilldo
Posts: 5
Joined: Sat Dec 01, 2012 4:53 pm
Location: Fremont, Ca.
Motorcycle: 1989 Gl1500/sidecar
2002 Silverwing FSC 600/sidecar
2008 Can-Am Spyder

Re: Groaning 89' 1500

Postby bobilldo » Thu Mar 14, 2013 1:12 pm

Sempai,
I, er,, uh, don't even know how to access the carbs. I'm not mechanically inclined, plus, I have no tools. I was told when I bought the GW, that it wouldn't need anything for a long time, except for the occasional tune-up, and oil changes. ( Yeah, right.) ... Maybe I should take a look at the "How-To" articles. ... When I first recieved the bike, I had all of the fluids changed, all new filters, trigger wheel, etc. just in case. Too bad they don't offer services-for-dummies. ... Well, I'm off for my daily "shake-down" cruise. :lol:

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Sempai
Posts: 295
Joined: Wed Mar 10, 2010 12:30 am
Location: Wichita, KS
Motorcycle: '94 GL1500SE
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Re: Groaning 89' 1500

Postby Sempai » Thu Mar 14, 2013 3:21 pm

Bobilldo
Please totally disregard my previous post...I was brainfarting when I posted that for you.
I totally missed that you're referring to a 1500, which only has 2 carbs on it...which means, you COULD balance them yourself with just 2 cheapo gauges from any parts store and 2 homemade fittings....
BUT, the 1500's are not nearly so easy to access as the 4 cylinder models. I apologize.


Keep the rubber side down.


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