Carburetor Leaking Fuel


Information and questions on GL1100 Goldwings (1980-1983)
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Delport79
Posts: 10
Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Carburetor Leaking Fuel

Post by Delport79 » Mon Jan 27, 2020 2:21 pm



Hi All.
This is my first time posting, but I have learned a lot so far from the how to articles.
I have a 1983 Gl1100 that I bought recently, but I am struggling with my carburetor that is leaking fuel and lots of it.
Would appreciate any help or advise of where to start with troubleshooting.



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newday777
Posts: 1540
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Carburetor Leaking Fuel

Post by newday777 » Mon Jan 27, 2020 10:21 pm

Remove the carburators and totally strip them apart, ultrasonic clean them and put in a Randakks Master carb rebuild kit in, properly set up.
If it's beyond your capabilities send them to Pistol Pete's carb shop

Delport79
Posts: 10
Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Tue Jan 28, 2020 1:28 am

Thank you for the suggestion.
Will see if I can get my hands on a rebuild kit. The big problem is that I'm in South Africa, with very little parts available and very little expertise. Most of the bike shops refuse to work on the old bikes, but that gives me an opportunity to learn and get to know my bike better.

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OldguyGlen
Posts: 169
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Location: Mound,MN
Motorcycle: 1980 GL1100 STD/Vetters
1966 Honda 90

Re: Carburetor Leaking Fuel

Post by OldguyGlen » Tue Jan 28, 2020 11:25 am

I can appreciate the challenges of service and parts difficulties in South Africa. The carbs on these bikes do need attention periodically. But most DIYers can handle it OK. This website has lots of help.
The leaking is due to the float itself, or float needle valve. An instantaneous fix is to rap on the offending carb bowl (gently) to see if the needle is just temporarily stuck. But probably you will have to remove the carb rack and investigate further. How thoroughly does the carb set need rebuilt ??? Depends on how long ago it was serviced. Was the bike unused and in storage for extend time (years ??)
Once the carb rack is out, do as much rebuild as possible to ward off future problem, and enhance the performance. A bike will "run" with some clogged ports, but will purr like a kitten with good clean carbs. You don't want to pull the carbs again to finish a half done job.
Good luck, and keep us posted.

Delport79
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Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Wed Jan 29, 2020 1:49 am

Thank you for the advice. I pulled the Carbs off the bike last night and noticed that there are fuel in the air chamber. Not sure why yet, but will start opening her up tonight.

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Maz
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Re: Carburetor Leaking Fuel

Post by Maz » Wed Jan 29, 2020 12:12 pm

Delport79 wrote:
Wed Jan 29, 2020 1:49 am
Thank you for the advice. I pulled the Carbs off the bike last night and noticed that there are fuel in the air chamber. Not sure why yet, but will start opening her up tonight.
This is a sure sign of a flooding carb (due to stuck/dirty float needle or sticking float), or failed seals/gasket between carbs.
No overflow on these carbs so excess fuel builds up and floods. Be aware that it doesn't take too much excess fuel in a cylinder to hydrolock the engine. Spin it over on the starter with plugs out. Any excess will spray out of plug holes.
FIRE RISK.
Maz
Ironically, Common Sense is the LEAST common of all senses!

Delport79
Posts: 10
Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Wed Jan 29, 2020 1:20 pm

Thanks Maz. I am busy stripping the cards to look at the floats, seals etc. Will keep you guys posted.

Delport79
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Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Wed Jan 29, 2020 2:24 pm

If Opened up the cards and I do think my floats are not set right. I have read that the measurement should be 15.5mm, but from where do I measure the 15.5mm. I know this must sound like a bumbass question, but if someone can send me some guidance on on how and where to measure that would be great.

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OldguyGlen
Posts: 169
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Location: Mound,MN
Motorcycle: 1980 GL1100 STD/Vetters
1966 Honda 90

Re: Carburetor Leaking Fuel

Post by OldguyGlen » Thu Jan 30, 2020 12:10 pm

Can't locate a rebuild guide article on-line that I have paper copies of. Thought I got it off a Saunders site? Here is a link to a good info article, but it's just an "extra details" type of article and not a total rebuild guide, but helpful in many ways:
https://www.randakksblog.com/gl1100-carb-details/
Pic would be better, but here's a verbal guide:
Tilt the carb (whole rack usually) up on its edge, propping it into a position where the float is swinging from open to closed, but the tang has just touched the flexible tip of the needle (not actually depressing the springy tip). Then measure 15.5 mm from the bottom of the float to the carb body (gasket surface for the bowl). Check dimension to all 4 corners of the float bottom, so the float is level, and free of any twist.
Another member might offer a pic, or link to a guide. I recommend Randakk's kits and info.
Be thorough and patient. there are many tiny ports and passages in these carbs.

Delport79
Posts: 10
Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Thu Jan 30, 2020 12:29 pm

Thanks Glen it's a great help!!

winguyjo
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next up : 1977 gl1000. resurrection underway.

Re: Carburetor Leaking Fuel

Post by winguyjo » Thu Jan 30, 2020 6:37 pm

while you are in there, put a q-tip in your drill, dip it in valve lapping compound, hand cleaner that contains pumice, toothpaste or carb cleaner and give that brass float needle seat a nice cleaning. rinse off any residue and it will be bright, shiny brass.

Delport79
Posts: 10
Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Sat Feb 01, 2020 6:43 am

So my carburetor is back on and no more fuel leaks, which is a win!
However she now backfires the moment I open the throttle and the reves starts climbing.
When looking into the air intake chamber it looks like the number 3 card is "spitting" back into the chamber.
Any suggestions of what might cause this?

Delport79
Posts: 10
Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Sat Feb 01, 2020 9:03 am

Sorry for all the questions guys, but I'm a real novice at this. I've noticed that fuel is flowing to the cards even when the bike is switched off, it then collects in the air intake chamber.
Must the fuel pump be letting fuel through even when the bike is switched off?
Is it a float issue or fuel pump issue?
I'm totally stumped. Hope someone can assist.

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newday777
Posts: 1540
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Carburetor Leaking Fuel

Post by newday777 » Sat Feb 01, 2020 9:11 am

No. You have not rebuilt the carburators correctly.
Delport79 wrote:
Sat Feb 01, 2020 9:03 am
Sorry for all the questions guys, but I'm a real novice at this. I've noticed that fuel is flowing to the cards even when the bike is switched off, it then collects in the air intake chamber.
Must the fuel pump be letting fuel through even when the bike is switched off?
Is it a float issue or fuel pump issue?
I'm totally stumped. Hope someone can assist.

User avatar
newday777
Posts: 1540
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Carburetor Leaking Fuel

Post by newday777 » Sat Feb 01, 2020 9:15 am

Yes it could be float settings....
But more is possible....

1. What did you use for kits and what parts did you replace?
2. How far did you strip the carburators before cleaning?
3. How did you clean the carburators?
newday777 wrote:
Sat Feb 01, 2020 9:11 am
No. You have not rebuilt the carburators correctly.
Delport79 wrote:
Sat Feb 01, 2020 9:03 am
Sorry for all the questions guys, but I'm a real novice at this. I've noticed that fuel is flowing to the cards even when the bike is switched off, it then collects in the air intake chamber.
Must the fuel pump be letting fuel through even when the bike is switched off?
Is it a float issue or fuel pump issue?
I'm totally stumped. Hope someone can assist.

User avatar
OldguyGlen
Posts: 169
Joined: Sat Nov 24, 2018 10:55 am
Location: Mound,MN
Motorcycle: 1980 GL1100 STD/Vetters
1966 Honda 90

Re: Carburetor Leaking Fuel

Post by OldguyGlen » Sat Feb 01, 2020 9:29 am

Newday777 is correct... More work to do.
Fuel can flow thru the petcock, and thru the pump, to possibly flood the carbs with the bike not running. Always turn the petcock off.
To save repeated carb rack installing /removing, bench test the assembled carbs with a temporary fuel line about 4 feet long (high) to verify no leaks.
Thoroughness and patience!!!

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pidjones
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Location: Clinton, Tennessee
Motorcycle: 2006 GL1800A
1978 GL1000 w/'75 engine (project)

Re: Carburetor Leaking Fuel

Post by pidjones » Sat Feb 01, 2020 10:31 am

Backfire is usually caused by excess air. Check that your intake runner o-ring on that cylinder did not come out, and the runner is sealed well to the carb. Also check the diaphragm properly fitted and not torn. Also, CV carbs need the air cleaner in place to function properly.

Delport79
Posts: 10
Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Sat Feb 01, 2020 1:04 pm

The cards were rebuilt by someone that was refurred to me by our Honda dealership, I got the
MOTOALL
MOTOALL 4 Carburetor Carb Rebuild Repair Kit for Honda GL1100 Goldwing 1100 1980-1983. It seemed fairly complete when I checked it online.
Not sure what he did, but my troubles started after he did the rebuild.
I will take the Carbs off again and go through the whole process again.
Does anyone maybe have a link to a "How To Do it yourself guide"?
And once again thank you for all the advise and guidance. Really appreciate it!
I am determined to get this right!

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Overdog
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Location: Pittsburgh, Pennsylvania
Motorcycle: 83 Goldwing Interstate

Re: Carburetor Leaking Fuel

Post by Overdog » Sat Feb 01, 2020 10:53 pm


Delport79
Posts: 10
Joined: Sat Oct 12, 2019 1:01 pm
Location: South Africa
Motorcycle: 1983gl1100A

Re: Carburetor Leaking Fuel

Post by Delport79 » Sun Mar 08, 2020 11:04 am

Hi All, so after I had all the issues with the leaking card I ordered a carb rebuild kit, rebuilt the card, installed it and no leaks.
I fired her up and she was running smoothly.
I took her for a test drive, but she died on me and the red light in the middle of the control panel came on.
If I press the starter button, there is a clicking sound on the starter relay, but the starter motor won't turn.
If I'm correct the red light is the oil pressure warning light, but I'm not sure.
What could cause the red light from coming on? I have checked the oil level and all seems fine?
Any suggestions?

winguyjo
Posts: 221
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing1 : 1982 gl1100 interstate; resurrection complete. SOLD
wing2 : 1980 gl1100 interstate; resurrection complete. SOLD.
wing3 : 81 gl1100i frame / 82 gl1100a engine/ 81cb900 odds & ends; resurrection complete. it's naked. SOLD.
next up : 1977 gl1000. resurrection underway.

Re: Carburetor Leaking Fuel

Post by winguyjo » Sun Mar 08, 2020 12:57 pm

perfectly normal for the oil pressure light to come on when an engine stalls.
since the engine is not cranking i would move over to the battery; check all connection and cables to the battery and starter for cleanliness, physical condition and tightness.
the battery should be load tested ... a reading of 12.6 volts with a voltmeter doesnt not tell the whole story. i have scrapped dozens of batteries that show 12+ volts but couldnt light up a 12v lamp. if all is good there, try wiggling the ignition switch and the kill switch while you attempt to crank.



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