knocking noise


Information and questions on GL1500 Goldwings (1988-2000)
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hutch5788
Posts: 2
Joined: Thu Oct 10, 2013 9:19 am
Location: coldwater,mich
Motorcycle: 1989 gl1500se

knocking noise

Postby hutch5788 » Thu Oct 10, 2013 9:33 am



I have a 1990 with 56000 miles it has a knocking noise when you first let out clutch under load and when in high gear at lower speed and adding throttle. it has new belts ,carbs rebuilt and sync.,new alt. it also makes the same noise when choke is on full . I had a 1200 that made same noise somewhat. any ideas out there ? thank you



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WingAdmin
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Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: knocking noise

Postby WingAdmin » Fri Oct 11, 2013 1:10 pm

It could be primary chain slap, which is normally an indication of poor carburetor synchronization.

hutch5788
Posts: 2
Joined: Thu Oct 10, 2013 9:19 am
Location: coldwater,mich
Motorcycle: 1989 gl1500se

Re: knocking noise

Postby hutch5788 » Fri Oct 11, 2013 5:12 pm

thank you for reply . the carbs are in sync. I have been told main chain slap before .this is the first 1500 I have heard it on and between the 2 I have and I have friends that have one also probably about 8-11 total only this one does it . but I had to replace all rubber gaskets very brittle like this got really really hot. thank you again


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