Carb Problems?


Information and questions on GL1200 Goldwings (1984-1987)
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Poohman
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Location: Deltona, FL
Motorcycle: 1985 GL1200A Apsencade
1998 GL1500 SE

Carb Problems?

Postby Poohman » Tue Nov 01, 2011 7:43 pm



Just wanted to know if anyone knows if I have carborater Problems or something else is wrong. I have a 85 gl1200 and it spits and spudders in 1rst then 2nd and clears up when shifting up in the rest of the 3 gears. I have changed the following; plugs, fuel filter, air filter. Could the carbs need to be rebuild or cleaned? Thanks for any advise that anyone could give me.



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virgilmobile
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84 GL 1200 I

Re: Carb Problems?

Postby virgilmobile » Tue Nov 01, 2011 8:35 pm

My 1200 sounds a little like that too.I already checked everything else,so it's off with the carbs for a full restore.
Now,on mine,it idles OK and pulls fine but I find it pops from 2000rpm through 3000 rpm and generally runs poorly in that range.

It cruises at 3200 rpm OK.It just feels like the fuel mixture is off in the 2500 rpm range,so I ran it at 2500 rpm in 3rd gear and started to operate the choke lever.

Well it smoothed out and quit popping.This "choke" is actually a fuel enrich valve to allow more fuel during warm-up.
With this test,I determined that It's running a bit lean,at least in the mid-range.So I suspect that the mid jets(if it has them)are plugged or the mid fuel passages are.
I need to look at a cutaway to determine the fuel flow.
I'm still riding so it will have to wait till I park it.

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virgilmobile
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Re: Carb Problems?

Postby virgilmobile » Tue Nov 01, 2011 8:46 pm

Oh and one other side note.I found that it sputters a bit at 2500 rpm in gears 1,2,and 3.When I get to 4th at 2500 rpm it's seems to clear up.When I thought about that,I realized that the 1200 starts using the vacuum advance system in 4th and 5th gear.In a lean fuel condition,advancing the ignition 10 degrees will compensate somewhat for a lean mixture.
Just a thought process,not a cure,just a mental process note to self of WHY?

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Poohman
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Motorcycle: 1985 GL1200A Apsencade
1998 GL1500 SE

Re: Carb Problems?

Postby Poohman » Wed Nov 02, 2011 4:51 am

Thanks for the Advise. I am also still riding mine. I live in Flordia so I get to pretty much ride it all the time. You are right when i put my choke on it seems to run a little better. I will have to see about getting the Carb's worked on then. I guess if I do that then everything should be fine. :)

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virgilmobile
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84 GL 1200 I

Re: Carb Problems?

Postby virgilmobile » Wed Nov 02, 2011 7:06 am

I'll keep you posted as to what I find.It may be a easy fix.The bike did set up a long while and I believe that the ethanol has created a problem.It seems carb problems are abundant around here.Talking to the parts guy,he says he has sold a record number of rebuild kits for bikes and 4 wheelers this year.

kwalsh
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Location: apache junction,az
Motorcycle: 1984 gl1200 aspencade

Re: Carb Problems?

Postby kwalsh » Wed Nov 02, 2011 2:50 pm

Have a 1984 wing 1200. After running for awhile and then parking the one carb will pour out gas when restarting. Any suggestions? Only happens when warmed up not any other time.

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virgilmobile
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83 GL1100 I
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84 GL 1200 I

Re: Carb Problems?

Postby virgilmobile » Wed Nov 02, 2011 3:40 pm

It sounds like the float needle sometimes doesn't seat.It may be related to everybody's ethanol problem.You may,when you can spare a day,remove the carbs and clean everything.Including the float pivot pin,needle valve,fuel seat and bore.

In the mean time,when you turn off the key,turn off the gas.
I've made this a habit on both bikes as I have been caught by...HYDRO LOCK.
Oh,by the way,if you don't turn the fuel back on...the bike won't go very far.Trust me..been there heard about that for a week.

Hey honey.....didja turn the gas on ???? :roll:

kwalsh
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Location: apache junction,az
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Re: Carb Problems?

Postby kwalsh » Thu Nov 03, 2011 8:40 am

tHANKS FOR THE INFO. i RAN A CAN OF sEAFOAM THRU AND HAVE BEEN SHUTTING OFF THE GAS. sO FAR SEEMS TO WORK. tHANKS AGAIN FOR THE ADVISE.

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mr.ngs
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Location: Friendswood, Texas
Motorcycle: 84 Aspencade
78 550 Four

Re: Carb Problems?

Postby mr.ngs » Fri Nov 04, 2011 7:19 pm

Mine was doing that. My mechanic friend told me to go buy a bottle of NOS. It's racing fuel additive and you can buy it at the local corporate auto part chain. It raises the octane level six points. Use 1/3 of a bottle per tank of the highest octane fuel you can buy and do that 3 tanks worth. It should help you immensely. It did me. And for 10 bucks, you can't beat that for an easy fix. Be patient and remember to ride it often and give it a bottle's worth. Also, make sure you warm it up for 5 minutes before you head out.
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Poohman
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Motorcycle: 1985 GL1200A Apsencade
1998 GL1500 SE

Re: Carb Problems?

Postby Poohman » Fri Nov 04, 2011 9:37 pm

I have just used a Can of Sea Foam and it has started making a difference, a Good Difference. I will try another can once I refuel. I Live in Florida so I can ride most of the year. So, its great. Does anyone know how to fix or what would be the problem with the odometer, it has seemed to stopped at 87,214 miles.

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virgilmobile
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84 GL 1200 I

Re: Carb Problems?

Postby virgilmobile » Fri Nov 04, 2011 10:41 pm

A plastic gear that drives the odometer has probably cracked and now is slipping on the shaft. Fixable?yes.also very difficult.

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Poohman
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1998 GL1500 SE

Re: Carb Problems?

Postby Poohman » Sat Nov 12, 2011 6:44 pm

Ok I have tried to run the Wing out of gas and then restarting he bike and it helps maybe a little but then it goes right back to the same thing. Is it possibel that the two front carbs need to be cleaned or rebuilt? If I could just know for sure what the problem was It would ease my mind but I thought it was the coil Packs but When I look at the coil packs (which are 2 of them) One pack goes to leftside front and righside back. And the other Coil Pack does the other side. So, if I can't figure this thing out then off to the bike shop I go, regreetfully. :x

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virgilmobile
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Location: Denham Springs,La.
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82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Carb Problems?

Postby virgilmobile » Mon Nov 14, 2011 5:19 pm

I'm in the middle of this problem.
Much info on the web,so I'm guessing were not the only ones.
It' hinted that it's a common problem in the 2500 rpm range.
Some say to lift and add a spacer under the main jet needle,others say to increase the pilot jet size and re-adjust the pilot screw.
I don't have a solution just yet,just digging around.
I have stripped my carbs to the casting and found NO restrictions anywhere.
I'm gonna look close at the slides for binding tonight and then use a vacuum cleaner on them to see if they move OK.
I'll post the results ASAP

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mr.ngs
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Motorcycle: 84 Aspencade
78 550 Four

Re: Carb Problems?

Postby mr.ngs » Mon Nov 14, 2011 6:38 pm

virgilmobile wrote:I'm in the middle of this problem.
Much info on the web,so I'm guessing were not the only ones.
It' hinted that it's a common problem in the 2500 rpm range.
Some say to lift and add a spacer under the main jet needle,others say to increase the pilot jet size and re-adjust the pilot screw.
I don't have a solution just yet,just digging around.
I have stripped my carbs to the casting and found NO restrictions anywhere.
I'm gonna look close at the slides for binding tonight and then use a vacuum cleaner on them to see if they move OK.
I'll post the results ASAP



in the 80's i believe honda new they had a problem and came out with a fix with resized jets / needles kit to resolve these issues. i believe when you do a carb overhaul they will come with the updated ^^^.

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virgilmobile
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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: Carb Problems?

Postby virgilmobile » Tue Nov 15, 2011 4:11 pm

Here's the most common info across the board about the 1200 carb problem.
I got the stuff to try it....http://www.goldwingfacts.com/forums/forum1/50239-1.html.

I'll know in a day or so and I'll post my pix of the work.

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Poohman
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Motorcycle: 1985 GL1200A Apsencade
1998 GL1500 SE

Re: Carb Problems?

Postby Poohman » Tue Nov 15, 2011 6:55 pm

I am not sure now if it is my carbs or something else. I can not get spark to the front two spark plugs. I have taken them out plugged the holes and reconnected the wires to the plugs and grounded them and I see now spark. I have a hard time believing that it would be both coils. I am wondering if it could be the pulse generator or..... If someone could tell me where to check the pulse generator and what the readings should be with the enging running or not running would really help. Thanks to everyone with suggestions. I really want to learn to work on it myself and not spend hundered of $. :D

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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: Carb Problems?

Postby virgilmobile » Wed Nov 16, 2011 10:13 am

Here's a link for info on the pulse generator...http://www.goldwingfacts.com/forums/vie ... forum_id=1.

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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: Carb Problems?

Postby virgilmobile » Fri Nov 18, 2011 10:17 am

Here's the final on the carbs.Turned out really good.viewtopic.php?f=5&t=9179




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