Idle Surge

Information and questions on GL1500 Goldwings (1988-2000)
Post Reply
User avatar
Posts: 8
Joined: Tue Dec 01, 2015 11:24 pm
Location: San Francisco, CA
Motorcycle: 1994 Honda Goldwing GL 1500 SE - Light/Dark Pearl Teal

Idle Surge

Post by john.amato1 »

Good evening

I have a 1994 GL1500SE. What causes an idle surge when in neutral?
Is it easy to fix?


User avatar
Posts: 1608
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500

Re: Idle Surge

Post by ct1500 »

The most likely culprit are plugged idle jets but like everything needs to be diagnosed to a component(s). Not exactly a job for the novice with the diagnosis involved and successful repair with idle mixture adjustments that need to be done afterwards. Has the machine has been setting unused for a period of time?
Local and need repair help with your 1500, Valkyrie or ST please click contact
Nothing leaves my shop till its' perfect
This is what I do
User avatar
Posts: 134
Joined: Thu Mar 31, 2022 8:03 am
Location: Middlesex, NC
Motorcycle: 1993 GL1500 Goldwing Aspencad

Re: Idle Surge

Post by Nlmman47 »

i had the same problem with mine. and yes you can have rebuilt or do it yourself which would be the proper way. but i did this and it fixes the surge. they left over ports from factory i believe that hasd some sort of caps on it. but this works. just be careful not to let anything fall into the carbs. and make sure they are in there good. i ran mine like this for a long time.
this is the youtube link

   Never miss a video: Subscribe to the GoldwingDocs YouTube channel today!
User avatar
Posts: 784
Joined: Sun May 17, 2020 5:47 pm
Location: Katy, Republic of Texas
Motorcycle: 2013 BMW K1600GT

Re: Idle Surge

Post by blupupher »

Toothpick repair is a temporary coverup of the real problem.

It is probably a vacuum leak somewhere in the the miles of lines in the intake system.

I did the toothpick repair and it worked for about 18 months, but started coming back. I had actually bought all the replacement tubing for my bike, but got rid of the bike before I fixed it.
Still have the rolls of tubing.
Current ride: 2013 BMW K1600GT

Former rides: 2002 GL1800A, 2001 CB750, 1994 GL1500 SE, 1994 VT1100C , 1984 VF500F, 1982 CB750C, 1982 GS250T, 1981 CB900C, 1978 CB125s, 1976 TS185
User avatar
Posts: 455
Joined: Sat Mar 31, 2018 9:39 pm
Location: Rockport Texas
Motorcycle: 1999 GL1500 SE
Previous bikes:
1969 Honda CL90 “bobbed” before it was cool
1981 Yamaha 850 Triple w/Windjammer
1981 GL1100 Interstate
1985 GL1200 LTD
1988 GL1500
1988 GL1500

Re: Idle Surge

Post by RockportDave »

Check the No. 1 (orange tape on it) vacuum hose. It will usually get a hole in it at the factory bend.

1999 GL1500SE 5th Goldwing through the years
Post Reply