single loud POP on deceleration.


Information and questions on GL1100 Goldwings (1980-1983)
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winguyjo
Posts: 627
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing 8 : 1982 gl1100 standard.

single loud POP on deceleration.

Post by winguyjo »



took my latest resurrection, a 1981 gl1100 interstate, out for it's first real road test; previous road tests had been "just around the block". needs a few issues to be addressed but the one that has me a bit puzzled is this ... if i bring the speed up to around 80mph or more, then instantly release the throttle, after 3 seconds there will be a single, loud 'pop' from the exhaust. it doesn't ALWAYS do it, but it USUALLY does, and when it does there's always a 3 second lag, and there's always just one 'pop'. at first i thought it was only coming from the right exhaust but i am pretty sure the last one came out the left.

i welcome your thoughts on this.


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Rambozo
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Re: single loud POP on deceleration.

Post by Rambozo »

I believe there is a secondary air system to prevent that. I suspect yours isn't working. Search for air cutoff valve for more info.
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winguyjo
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Location: b.c. Canada
Motorcycle: wing 8 : 1982 gl1100 standard.

Re: single loud POP on deceleration.

Post by winguyjo »

thanks, that was definitely my first thought. just fishing around for other possibilities before i pull the carbs out again. at least i am getting good at that.
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Maz
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Re: single loud POP on deceleration.

Post by Maz »

If the 1100 setup is the same as the 1000, you can access the air cutoff valve without removing the carbs. Pull the air filter box and you can get straight on it. Of course, if the 1100's are different, I've been no help at all!

Maz
Ironically, Common Sense is the LEAST common of all senses!
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winguyjo
Posts: 627
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing 8 : 1982 gl1100 standard.

Re: single loud POP on deceleration.

Post by winguyjo »

thanks, maz. the 1100 is different, unless i am mistaken, each carb has it's own ACV and if i recall correctly, 2 of them can only be accessed by removing and splitting the carbs.
JoBoy68
Posts: 185
Joined: Tue Jun 11, 2019 10:28 am
Location: Pawtucket Rhode Island
Motorcycle: 1983 Honda GoldWing GL 1100 Interstate

Re: single loud POP on deceleration.

Post by JoBoy68 »

I changed my air cut off valves with the Carbs on the bike. I used a small flat ratchet that is made for bits . I got the kit at Loews , 83 GL 1100
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winguyjo
Posts: 627
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing 8 : 1982 gl1100 standard.

Re: single loud POP on deceleration.

Post by winguyjo »

thanks, joboy ... will definitely look at doing it that way.


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