Carburetor Rant


Information and questions on GL1100 Goldwings (1980-1983)
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DenverWinger
Posts: 2436
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
'80 GL1100 STD Vetter (2005-)
'93 GL1500 Aspencade (2017-)
'83 Trav-Lite Camper (2010-)
Past rides
'72 CL350 (1980-1988) sold
'78 Suzuki GS550 (1985-2005) sold
'77 GL1000 (2002-2006) sold

Carburetor Rant

Post by DenverWinger »



Well, after 17 years of having the 1100 start right up with slightest push of starter button (barring dead battery for whatever reason or starter going bad, or failed start relay) I had to argue with it a couple weeks ago.

If the starter would turn the engine over it always started right up. OK - I'll add in a couple hydrolocks from overflowing carb, and even from cylinder full of coolant from head gasket. But even in those cases after I unscrewed the plugs, turned it over, then screwed them back in it always started.

I had it out on the road back in January, as usual it started right up, idled fine, I warmed it up some and drove around the neighborhood a good half hour, temp gauge up to normal range and everything before I parked it in the garage again. It was running as well as it did all last summer.

Well, a few weeks ago like early March I went to take it out on the road again. Un co-operative. Cranking just fine, firing some, but not hitting on enough cylinders to actually start. Fuel isn't horribly old, it is fuel from last fall.

So I refused to be defeated by a Goldwing, added the 2/10/50 amp charger on the 50 amp "boost" setting to the battery and proceeded to crank, fiddle the choke and throttle until it was running on its own, feathering the throttle to keep it running. It was clear that only cyl 2&4 (left bank) were hitting on idle, I could rev the engine, but it totally refused to settle into an idle unless I cracked the throttle enough to keep it running on the left cyl's only. Kinda sounded like a Hardley with the Vee-Twin lope. I even unscrewed the right side sparkplugs to take a look-see. Not fuel-fouled. They aren't exactly new, but were perfectly OK in January, should have been fine in March, too.... :D

I ran it like that in the garage (yes, overhead door open) for a good long time, rev'ing the engine and getting things all nicely warmed up for a good half hour hoping cyl 1 & 3 would kick in and let it idle on four cylinders. No Joy. Pretty sure 1 & 3 were hitting when I grabbed some throttle, but no idle joy at all. Temp gauge was well into the normal range when I gave up on this effort.

When I put this bike on the road in 2005 I paid a local mechanic $300 to rebuild the carbs. He did a nice job, the carbs have been fine up 'til now. I'll qualify that by saying in the past couple years if I really got on the throttle sounded like a couple cylinders cutting out at high revs and WOT. I had been thinking weak ignition since it otherwise ran and idled fine on 4 cylinders. But now thinking this was the start of carb issues.

I'm not scared of opening a carburetor, rebuilt many for automobiles, but looks like I hafta pull the carburetor rack off the 1100 to get it to run correctly again. Pulled the rack several times for stators, leaky coolant tubes, head gaskets etc, but never to open up a failed carburetor. Before I do that, I may try to start it again and if it has enough power to drive around the neighborhood on missing cylinders I'll drive it hard and warm it up real good to see what it does.

However, expectations are low.

Hoping I can pull carb bowls and find passages or jets or something else I can easily clean out and make it run good again without full disassembly. But even if full disassembly is needed, I can likely save most of the o-rings etc as the 42 year old carburetor rack was rebuilt "only" 17 yrs ago.

Not 'scared of the job, just wanted to rant. :D Was hoping the 1100 would be running OK so I could ride it while doing some work on the 1500 this spring before good riding season is in full-force. 1500 is running and ready for the season except I want to take the dashboard apart to fix some broken plastic, and maybe disassemble a couple handlebar switches for a good cleaning. I don't like working in a cold unheated garage. 1100 has always been reliable-running in the spring until now.

I'll make a point of taking pictures to share with the team.... :)


A local inventor has figured a way to turn a sausage grinder backward to manufacture pigs. :lol:

♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:
~Mark
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winguyjo
Posts: 599
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Location: b.c. Canada
Motorcycle: wing7 : 1983 aspencade candy wineberry (?). current rider.

Re: Carburetor Rant

Post by winguyjo »

hope the fix goes smoothly for you. on the last gl1000 i had, i took the carbs out so many times i now consider it therapeutic. ;)
joecoolsuncle
Posts: 549
Joined: Sun Sep 26, 2021 6:10 am
Location: oxford, ar
Motorcycle: 1984 gl1200a

Re: Carburetor Rant

Post by joecoolsuncle »

winguyjo wrote: Wed Apr 13, 2022 12:45 am hope the fix goes smoothly for you. on the last gl1000 i had, i took the carbs out so many times i now consider it therapeutic. ;)
very therapeutic if you mix in a few beers! it almost becomes fun. lol
JoBoy68
Posts: 137
Joined: Tue Jun 11, 2019 10:28 am
Location: Pawtucket Rhode Island
Motorcycle: 1983 Honda GoldWing GL 1100 Interstate

Re: Carburetor Rant

Post by JoBoy68 »

did you check the 2 dead cylinders for spark , it sounds like what happened when one of my coils died
User avatar
DenverWinger
Posts: 2436
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
'80 GL1100 STD Vetter (2005-)
'93 GL1500 Aspencade (2017-)
'83 Trav-Lite Camper (2010-)
Past rides
'72 CL350 (1980-1988) sold
'78 Suzuki GS550 (1985-2005) sold
'77 GL1000 (2002-2006) sold

Re: Carburetor Rant

Post by DenverWinger »

Since both dead cyl are on the same side would have to be a problem with both coils. I didn't check spark per se, but I did unscrew the plugs and look at them. If it was spark issue they'd have been wet with fuel, but they were dry, that's why I'm sure its carbs. Just the idle circuits I suspect, I think those two cylinders were firing when I gave it some throttle. This was only on the center stand in the garage.

Will know more when it warms back up some outside and I try to drive it around, will know then if it can accelerate on four cylinders, but only idle on the left two.
A local inventor has figured a way to turn a sausage grinder backward to manufacture pigs. :lol:

♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:
~Mark
User avatar
DenverWinger
Posts: 2436
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
'80 GL1100 STD Vetter (2005-)
'93 GL1500 Aspencade (2017-)
'83 Trav-Lite Camper (2010-)
Past rides
'72 CL350 (1980-1988) sold
'78 Suzuki GS550 (1985-2005) sold
'77 GL1000 (2002-2006) sold

Re: Carburetor Rant

Post by DenverWinger »

Well, an update...

Nice and warm out today, so I fired up the 1100, still running on just the Left cylinders, and drove it around the neighborhood. If I give it some throttle, the right side kicks in and we have plenty of power, hitting on all four. :)

So that confirms ignition is ok, there's fuel getting to the right side carbs and I have plugged idle circuits in the right-side carbs.

The carb rack will have to come out, and hopefully I can find/clear the blockage just removing the bowls and idle mix screws, cleaning jets and as many passages I can with fine wires and carb cleaner spray without having to do a complete disassembly of the carb rack. Will try easy fixes first.

We'll keep you posted.
A local inventor has figured a way to turn a sausage grinder backward to manufacture pigs. :lol:

♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:
~Mark
User avatar
gdhubert
Posts: 27
Joined: Sun Aug 08, 2021 10:16 pm
Location: Charles Town, WV
Motorcycle: 1982 Goldwing - Barn find rebuild

Re: Carburetor Rant

Post by gdhubert »

My favorite part of doing the carbs on my GL1100 was getting the *&^%! throttle cable re-connected!
User avatar
DenverWinger
Posts: 2436
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
'80 GL1100 STD Vetter (2005-)
'93 GL1500 Aspencade (2017-)
'83 Trav-Lite Camper (2010-)
Past rides
'72 CL350 (1980-1988) sold
'78 Suzuki GS550 (1985-2005) sold
'77 GL1000 (2002-2006) sold

Re: Carburetor Rant

Post by DenverWinger »

Y - not looking forward to that. They are a #*!)&$# to work on. Beer required :lol:

Been cold again so haven't done anything except swap the 1500 and 1100 parking spots so 1100 is in center of garage.

Sposed to be warm weekend, but I got a dead tree that needs to come down. Prolly do that Saturday. Maybe the carbs Sunday.

Sound like I'm procrastinating?
A local inventor has figured a way to turn a sausage grinder backward to manufacture pigs. :lol:

♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:
~Mark
User avatar
DenverWinger
Posts: 2436
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
'80 GL1100 STD Vetter (2005-)
'93 GL1500 Aspencade (2017-)
'83 Trav-Lite Camper (2010-)
Past rides
'72 CL350 (1980-1988) sold
'78 Suzuki GS550 (1985-2005) sold
'77 GL1000 (2002-2006) sold

Re: Carburetor Rant

Post by DenverWinger »

Got the carb rack off today. took maybe 45 mins. Throttle cables weren't so bad this time as it appears the "Push" cable is broke. They usually don't break. Or is somehow disconnected in the handgrip end- but I doubt that. I replaced the "Pull" cable about 10 yrs ago after it broke, that was fun.

To get the rack out have to remove the right side carb caps and intake runners. It appears the two CV slides on the right side are fine, I pulled them out, looked, and put them back in.

Set the rack on a cinder block and drained the bowls. No water noted. By smell the fuel in it is clearly not as fresh as it could be, I hardly drove the bike at all last year due to bald front tire, which I replaced last fall. Then the bike got driven some in the fall, ran fine then. Fuel gauge shows just above E so probably less than quarter full of last year's E10 fuel, probably from last spring. This is a perfect example of what can happen when a bike doesn't get ridden as often as it should be.

I removed #1 carb bowl. Inside is still basically clean. So I think if I poke out thru the Idle jets with fine wire (not removable on the '80 wing), and clean out the passages for the pilot screws it should be able to idle on four cylinders again.

I checked the settings of the pilot screws and wrote it down before I taking them out. #1,#3 were screwed in all the way!!! #2 was out 1 1/2 turn. #4 was just cracked open. Huh??? Tempted to put them back that way when I reassemble (not doing complete disassemble, only touching what can be accessed from inside the bowl and under the slider caps), The bike idled fine the way the pilot screws were up until this spring. I noted absence of the washer and o-ring that's supposed to be under the pilot screw on #1 carb when I removed the screw. This is the only one I removed so far. We'll see how the others are... Might explain it running good with screw all the way in.

I am out of carb cleaner spray, and it was dinner time, so that's where I left the project for today. Will continue thru the weekend.
A local inventor has figured a way to turn a sausage grinder backward to manufacture pigs. :lol:

♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:
~Mark
User avatar
winguyjo
Posts: 599
Joined: Sat Aug 11, 2018 9:26 pm
Location: b.c. Canada
Motorcycle: wing7 : 1983 aspencade candy wineberry (?). current rider.

Re: Carburetor Rant

Post by winguyjo »

actually, there is a technique for removing the idle jets. if i recall, there's a youtube video on it but basically all you do is thread a drywall screw into it. if you are lucky you will feel/hear it break free and just lift it out, if it doesnt, you can extract the screw and jet together, with pliers and a judicious use of leverage.

full disclosure : i am 2 for 2 on this , so a total of 8 idle jets. when you hear that first one break free you will think you have broken something but i have never heard of anyone having trouble with this method. they have to come out because there are 8 tiny holes in the side of each that can get clogged.
User avatar
DenverWinger
Posts: 2436
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
'80 GL1100 STD Vetter (2005-)
'93 GL1500 Aspencade (2017-)
'83 Trav-Lite Camper (2010-)
Past rides
'72 CL350 (1980-1988) sold
'78 Suzuki GS550 (1985-2005) sold
'77 GL1000 (2002-2006) sold

Re: Carburetor Rant

Post by DenverWinger »

Got the idle jets out, the side holes were clear but the jet itself was indeed plugged. I know your not supposed to do this but a little fine wire fixed that.

All four of the carb internals besides these two idle jets were surprisingly clean, so I didn't take any scary pictures. Sprayed out the insides of all four carb bowels, and really didn't do much more than that. Set the pilot screws at 1 1/4 turn out (remember I found them fully seated!)

I put the carb rack back on the engine with a new fuel filter and some O-rings from Ace Hardware for between the intake headers and head. Took a header with me to the store. They had some Viton rings that fit perfect. Got out the deep-cycle camping battery and jumpered the bike, figured I'd be cranking a while to get fuel in the empty carbs. Maybe 20 seconds of cranking it was idling on all four cylinders. Haven't adjusted anything yet, don't really have anything useful as a tool to twiddle the pilot screws, it's idling about 700RPM right now and sounds like one cylinder is hitting a little harder than the rest of them while idling. Probably need a re-sync but don't have gauges. I'll tweek the idle back to 1000 and maybe try to twiddle the pilot screws to see if I can even out the idle a little. I didn't touch the throttle linkages any, so shouldn't have disturbed that aspect of the sync, Idle mixture adjust should get it back to where it always has been. Ran good going down the road though. Happy Winger. :)

Found the throttle "Push" cable is indeed broken. I replaced the "Pull" cable about 10 yrs ago. Not too worried about the "push" cable at this moment, the throttle return spring on the Carb rack is robust and everything is working smooth without the other cable. Made it easier to reconnect the throttle. I'll probably look for another "Push" cable at some point because it prevents you inadvertently turning the throttle handgrip too far in the "idle" direction and stressing the pull cable, trying to make it "push". This can lead to premature cable fail.

So the "OldWing" is back on the road..... END OF RANT! :)


A local inventor has figured a way to turn a sausage grinder backward to manufacture pigs. :lol:

♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:
~Mark
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