Rebuilding carbs on 1993 Wing; need help!


Information and questions on GL1500 Goldwings (1988-2000)
  • Sponsored Links
User avatar
Ricvannatta
Posts: 5
Joined: Sun Apr 13, 2014 12:24 pm
Location: Beulaville, NC
Motorcycle: 1993 GL1500A Aspencade

Rebuilding carbs on 1993 Wing; need help!

Postby Ricvannatta » Sun Jul 06, 2014 6:02 pm



Been awhile since my last post. Had started with a surging idle problem. After applying the advice I got from fellow forum members, i.e., Seafoam and run it, my wing was again rideable. Thank you to all who helped. I still have a minor surge problem but nothing too serious. Took the wing in for front fork work due to leaky seals. While she was in for that service, I told the techs to give her a good going over and see if they could figure out why the surge continues. They balanced carbs, replaced fork seals, serviced brakes, changed plugs, filters and fluids, charged me $1700.00 and called me to pick up the wing. I finish settling up the bill and then the tech tells me that the only way to end the surge and smooth the idle is to rebuild the carbs. I was pretty disappointed that more work was needed after dropping that much money. I've got a new garage so I thought I would try to do my own carbs. Figured out all the Tupperware had to come off, hoses, connectors, etc. Now I'm stuck for trying to figure out how to get to the clamp screws on the carbs. Thought maybe getting the upper fairing off and out of the way, but now wondering if the radiators and coolant hoses also have to come off to get a visual on these screw clamps. 1993 Aspencade. HELP!!!!!



User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Rebuilding carbs on 1993 Wing; need help!

Postby virgilmobile » Sun Jul 06, 2014 6:57 pm

I'm able to loosen the clamps using a 18" phillips screwdriver.access is from each side.You'll need a keen eye and a flashlight you see them.
You will have you drain the coolant too.There's a couple if hoses attached to the bottom of the carbs.
I have a extra long set of needle nose pliers you get the hoses loose.
Now you the surging problem possiblities.
I have had a partially plugged slow speed jet,misadjusted idle jet....this should be checked first
Any vacuum leaks,especially where a vacuum line connects you the engine.I think there's 4 of them.
Any vacuum line with a sharp 90° bend....I think there's at least 3 of them.
Look at the throat of the carbs...they should be equally marked...as in traces of fuel flow and discoloration.
One bike had a clean carb and One dirty One....airflow was different...the slide diaphragm was torn.

User avatar
dingdong
Posts: 2863
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Rebuilding carbs on 1993 Wing; need help!

Postby dingdong » Mon Jul 07, 2014 6:50 am

What Virgil said. Harbor Freight has a set of long needle nose and hose clamp pliers. They also have sets of extra long Phillips screw drivers.
It is also a good idea to get a new set of "carb to manifold" mounting boots. The old ones will be hard and may not reseal.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

User avatar
Ricvannatta
Posts: 5
Joined: Sun Apr 13, 2014 12:24 pm
Location: Beulaville, NC
Motorcycle: 1993 GL1500A Aspencade

Re: Rebuilding carbs on 1993 Wing; need help!

Postby Ricvannatta » Mon Jul 07, 2014 9:15 pm

Great help VirgilMobile and DingDong. Went to Harbor Freight today and picked up screwdrivers and pliers. Came home about 7:00 PM and had carbs in my hands by 8:00 PM. I plan to take your advice again, Virgil, and replace all hoses while the carbs are out of the way. I suspect by the symptoms that the slow speed jet may be partially blocked...Seafoam is great but can't dissolve everything that gets into a carburator. I'm also anxious to see what the inside of the float bowls looks like. After three years up on blocks with the same fuel, albeit treated with Stabil, I am expecting to find some buildup to remove while rebuilding the carbs with new parts. Again, thanks to both of you and Jim Martino for the help and informative pictures.

User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Rebuilding carbs on 1993 Wing; need help!

Postby virgilmobile » Mon Jul 07, 2014 9:52 pm

Under the carbs is a black thermal mat...Lift it..replace the vacuum line with the sharp 90*

User avatar
Ricvannatta
Posts: 5
Joined: Sun Apr 13, 2014 12:24 pm
Location: Beulaville, NC
Motorcycle: 1993 GL1500A Aspencade

Re: Rebuilding carbs on 1993 Wing; need help!

Postby Ricvannatta » Sat Jul 12, 2014 7:22 pm

Hello again Virgil. Saw a couple different 90 degree hoses...a couple vacuum lines 1/4" diameter and a 1/2" hose running to the PAIR valve. The 1/2" hose appeared to be compressed in the 90 degree bend part of the hose. No discernible holes or cracks in any of the hoses. Started tearing down the carbs and looking for cause. Have you ever heard of the surging symptom being caused by restricted air flow thru the PAIR control valve?

User avatar
virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Rebuilding carbs on 1993 Wing; need help!

Postby virgilmobile » Sun Jul 13, 2014 8:56 am

I'll believe anything now days.If the sharp 90* is not sturdy,replace it.
Vacuum can seal a soft spot shut.

User avatar
Ricvannatta
Posts: 5
Joined: Sun Apr 13, 2014 12:24 pm
Location: Beulaville, NC
Motorcycle: 1993 GL1500A Aspencade

Re: Rebuilding carbs on 1993 Wing; need help!

Postby Ricvannatta » Sun Dec 04, 2016 9:41 am

With help from Virgil, was able to rebuild carbs, replaced all hoses and tube under the mat and replaced the mat (was so dry-rotted that it came out in pieces). Turned the key, hit the starter and the Wing screamed to life...I mean literally screamed. Traced the sound to the IAT check valve. Obtained an online .pdf download of the GL 1500 service manual and performed a pressure test on the valve which failed. Started looking for a replacement and lo and behold, Honda says the part is "obsolete". What does that mean? Does it mean the part is no longer needed...or the part has an after market substitute....or the part is simply no longer made and the bike needs to be scrapped? Say it isn't so!

User avatar
RBGERSON
Posts: 2617
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: Rebuilding carbs on 1993 Wing; need help!

Postby RBGERSON » Sun Dec 04, 2016 9:59 am

Usually means discontinued..have a part number???
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

User avatar
Ricvannatta
Posts: 5
Joined: Sun Apr 13, 2014 12:24 pm
Location: Beulaville, NC
Motorcycle: 1993 GL1500A Aspencade

Re: Rebuilding carbs on 1993 Wing; need help!

Postby Ricvannatta » Sun Dec 04, 2016 10:13 am

I do indeed. 17155-MN5-003.




Return to “GL1500 Information & Questions”




Who is online

Users browsing this forum: MSNbot Media [Bot] and 3 guests