Gas cap

Information and questions on GL1100 Goldwings (1980-1983)
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Joined: Sun Jan 25, 2015 8:37 am
Location: knoxville tn
Motorcycle: 1983 GL1100a & 2000 Sportster 1200

Gas cap

Postby T-Rat » Thu Nov 12, 2015 5:57 am

My bike, 83 GL1100, seems to have too much vacuum in the fuel tank after a ride. If I open the fuel cap at idle after the engine has run for a while the engine seems to actually idle smother and the idle speed increases slightly and there is a noticeable whoosh sound from the tank. I went to Honda to get a new cap because I figured the vent in the cap isn't working correctly. The cap is no longer available from Honda (thanks Honda). Does anyone know of a good aftermarket cap?

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Re: Gas cap

Postby dingdong » Thu Nov 12, 2015 7:30 am

There is a vent in the cap that gets plugged. Soak it in Seafoam or some other solvent and blow it out. Very common complaint and easily remedied.


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Location: Mooresville, North Carolina
Motorcycle: 1983 GL1100 Interstate

Re: Gas cap

Postby velvetrider » Mon Nov 16, 2015 12:08 pm

I soaked my gas cap in white vinegar overnight. Blew it out let it dry completely. Works great.
Put Aluminum foil over filler while you do this,,,

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