Idle issue


Information and questions on GL1100 Goldwings (1980-1983)
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rocketdog
Posts: 1
Joined: Fri Jul 27, 2012 12:19 pm
Location: Williston ND
Motorcycle: 82
GL1100
Interstate

Idle issue

Postby rocketdog » Tue Jul 31, 2012 8:36 am



Good day and greetings to all fellow goldwing owners. I acquired my 1982 GL1100 Honda Interstate about 2 weeks ago from a trade (no cash involved) and have been cleaning her up.

I'm getting an engine knock at low RPM so I decided to follow the advice of this forum on how to reset my low idle. Every time I reset the idle my RPMs don't fall off between shifting. If I adjust the idle too high, around 1200, the bike will race the RPMs up to near 3000 and stay there.

Im still running sea foam in old gas, partially mixed with 91 octane fresh fuel. There is more fresh fuel than old gas in my tank at this point.....but didn't want to rule out tarnished fuel as a problem to my idle woes.

I currently run the bike by keeping the throttle open just a hair when I stop. As most of you know this can be annoying. I'm somewhat of a perfectionist and want things to run correctly by having adjustments made and done correctly.

ANY advice, insight would be greatly appreciated. I live in Williston ND. My riding season is short.

Thanks in advance,

Robert.



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virgilmobile
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Re: Idle issue

Postby virgilmobile » Tue Jul 31, 2012 9:23 am

Sea Foam has it's place,but sometimes it ends up just spending a day with the carbs torn apart to get them to behave right.It's tedious.when there right, it will idle at 900 rpm all day and pull to red line at any moment.

bustedwing
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Re: Idle issue

Postby bustedwing » Tue Jul 31, 2012 2:51 pm

If you are still running Sea Foam more than likely it wil not run right. Sea Foam carries the gunk with it but also changes the firing properties of the fuel that is running thru the engine so until you get some good clean fuel in it there are going to be slight differences . Sea Foam is good, but there is a sacrifice when you use it.I think if the carbs are not too bad once you get clean fuel thru them you will be good. If the carbs are too dirty then once you get clean fuel thru themyou will find out that it is going to take rebuilding them to cure the problem.
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bbells
Posts: 42
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Location: Minneapolis, Minnesota
Motorcycle: 1982 GL1100 Aspencade

Re: Idle issue

Postby bbells » Tue Jul 31, 2012 9:42 pm

You will also need to sync the carbs if they are way off before it will idle right.

Riffjunkie
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Joined: Tue Jul 17, 2012 4:48 pm
Location: Carrollton, Ohio
Motorcycle: 1983 Honda Goldwing

Re: Idle issue

Postby Riffjunkie » Wed Aug 01, 2012 8:54 pm

I have a 83 Aspencade and just delt with the same problem, exactly as you stated. Mine turned out to be a coil, only running on two cylinders. Pull the plugs and see if you have spark. The new ( used) coils fixed mine right up. Hope this helps.

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littlebeaver
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Re: Idle issue

Postby littlebeaver » Sat Aug 04, 2012 4:53 pm

If this was my problem and I owned a 82 model, I would remove and clean the idle jets, these are not pressed in like the 80-81's I don't think, but they still get clogged, these idle circuits are kinda important and must be cleaned if you ever want your bike to idle proper...I think they unscrew on the 82's.. You will never know unless you try it and see..Seafoam is great for maintainance maybe not so good for unclogging jets though.. Use compressed air and a small firm wire, or some enjoy guitar stings, whatever.. :D Good luck with your idle issue...Oh and I'm not disagreeing with anyone here but, you really must have clean idle jets before you even think about a sync. job...I think.... :lol: :lol:

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patbrandon1
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1981 Honda CM400C

Re: Idle issue

Postby patbrandon1 » Sun Aug 05, 2012 12:02 am

Just my two cents worth. Start with the easiest to do solution first. (1) Get that gas out and start with fresh regular gas from a high quality gas station. If that doesn't change anything, (2) change the fuel filter. If you still have idle problems, then (3) start looking in the plenum (remove the air filter, and the vacuum chamber and pistons will be visible) With a mirror borrowed from a female friend, compact or such, or a large mechanics mirror, look into the vacuum chamber while the bike is running, rap the throttle quickly, and see if all of the pistons, (cans) are moving evenly. If not moving freely, these can be removed and polished slightly. Just to clean, not to remove any material. The tolerances will not allow for any removal of material on these, but they can be cleaned, in order to get them moving freely. (4) Then sync the carbs.

I like to try simple easy things first. Check, Check, Check, then check some more. In my thirty plus years fixing plastic molding machines, this method of checking before changing, has proved very efficient. Good luck, and keep us posted please.

goldminerusa
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Re: Idle issue

Postby goldminerusa » Sun Aug 05, 2012 8:39 am

Ditto Patbrandon1. Siphon all that gas mixture out, drain the lines and bowls and add fresh 91+ octane gas. I use Mobil. Establish a base line and work from there. Change the oil/filter too. Combustion by products contaminate the oil. I think most wingers will agree with using Delo 400LE, 15/40.

cowhead8863
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Location: Omaha, Nebraska
Motorcycle: 1982 GL1100 Interstate

Re: Idle issue

Postby cowhead8863 » Mon Mar 07, 2016 9:10 pm

Hello from Offutt AFB my fellow Goldwingers. I have a beautiful 1982 GW Interstate that needs my love. I had her running great last year, and "winterized" her for the big freeze this winter. Well I have replaced the gas, and the battery in her, but now when I start her up she instantly idles at 4-5 thousand rpm. Not only that if I don't shut her down she will climb until I'm sure she explode. I am not very mechanically inclined. I was hoping that maybe there is something simple I am just missing because it ran so well last season. At this point I feel hopeless because I can't even ride her to a repair shop. Any help would be greatly appreciated!

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patbrandon1
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Re: Idle issue

Postby patbrandon1 » Tue Mar 08, 2016 12:43 am

cowhead8863 wrote:Hello from Offutt AFB my fellow Goldwingers. I have a beautiful 1982 GW Interstate that needs my love. I had her running great last year, and "winterized" her for the big freeze this winter. Well I have replaced the gas, and the battery in her, but now when I start her up she instantly idles at 4-5 thousand rpm. Not only that if I don't shut her down she will climb until I'm sure she explode. I am not very mechanically inclined. I was hoping that maybe there is something simple I am just missing because it ran so well last season. At this point I feel hopeless because I can't even ride her to a repair shop. Any help would be greatly appreciated!


Hi Cowhead,
Sounds like the throttle is stuck somewhere. Does the throttle move freely all the way forward and backward? Does there seem to be the same amount of resistance the throttle had last year? Sounds to me as if something is either stuck or broken or both. As you are self admittedly not very mechanically inclined it is hard for me to direct you as to what to look for. But I would first check the throttle cables. There are two of them, one pushes, and one pulls. That is done by opening up the housing in front of the throttle handle. Check to see that both are in tact. Then I would check where those cables meet the carburetors. I have a feeling that something is stuck there. If you aren't confident in checking these things out maybe you can find someone that could help you.

I'm sure someone with a better ability to guide you will chime in here but this is just a bit of what I can think of that you might be able to check. Good luck, keep us posted, and remember to breathe and stay positive. You'll find the answers on here.

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RBGERSON
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Re: Idle issue

Postby RBGERSON » Tue Mar 08, 2016 9:34 am

Knock at low idle = carb synch issue 90% of the time, then idle jet issues, then cables binding, then slides sticking..So do a synch, then clean and lube your cables and check the routing..then if you still have an issue pull the carbs..clean or rebuild.

Vacuum leak could be an issue too if synch can't leveled out..but do above first.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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WingAdmin
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Re: Idle issue

Postby WingAdmin » Tue Mar 08, 2016 10:04 am

First thing I would check is the throttle. When you twist open the throttle grip, watch the throttle itself, to see it rotating (look on the back end of it). When you close the throttle twist grip, make sure the throttle closes. Push it gently with your finger to make sure it is closed all of the way.

cowhead8863
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Location: Omaha, Nebraska
Motorcycle: 1982 GL1100 Interstate

Re: Idle issue

Postby cowhead8863 » Tue Mar 08, 2016 1:23 pm

Ok, so throttle cable is operating like it should. Choke cable is also operating like it should. I am at a loss.

cowhead8863
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Re: Idle issue

Postby cowhead8863 » Tue Mar 08, 2016 1:24 pm

A sync can be done even if the Bike wants to explode?

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littlebeaver
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Re: Idle issue

Postby littlebeaver » Tue Mar 08, 2016 4:09 pm

Accelerator pump might be bad... sounds like it's sticking and not closing, or something odd with it...

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WingAdmin
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Re: Idle issue

Postby WingAdmin » Tue Mar 08, 2016 4:28 pm

OK, next I would check for a vacuum leak. Spray some carb cleaner, or if you have a propane torch, put the tip of the torch (unlit!!!) and let the propane come out in various places - around the carburetor, intake runners, etc. If you find a spot that causes the engine RPM to rise when you get near it, investigate it for a vacuum leak.

cowhead8863
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Re: Idle issue

Postby cowhead8863 » Tue Mar 08, 2016 9:02 pm

To check for a Vacuum leak the bike would have to be running? The bike will climb RPM's very rapidly (matter of secs before 8-9K)... is there danger in "hurting" my engine?

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spiralout
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Re: Idle issue

Postby spiralout » Tue Mar 08, 2016 9:31 pm

RBGERSON wrote:Knock at low idle = carb synch issue 90% of the time, then idle jet issues, then cables binding, then slides sticking..So do a synch, then clean and lube your cables and check the routing..then if you still have an issue pull the carbs..clean or rebuild.

Vacuum leak could be an issue too if synch can't leveled out..but do above first.

The guy with the knock problem was 4 years ago.
cowhead8863 wrote:A sync can be done even if the Bike wants to explode?

See above
Try backing the idle screw out until it's just barely making contact with the bellcrank. Possible some monkey saw a screw and turned it over the winter ;)

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WingAdmin
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Re: Idle issue

Postby WingAdmin » Wed Mar 09, 2016 11:37 am

cowhead8863 wrote:To check for a Vacuum leak the bike would have to be running? The bike will climb RPM's very rapidly (matter of secs before 8-9K)... is there danger in "hurting" my engine?


The bike does not make vacuum if it is not running.

If the RPM's are climbing to 8,000-9,000 then no, you don't want that. Like Spiralout said, back out the idle screw all the way back (careful you don't back it out so far that it falls out completely) and see if it makes any difference. I can't believe that with the throttle closed entirely that the bike would be doing 8-9K in revs. There simply isn't the ability to get that much air through a closed set of throttles.

cowhead8863
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Re: Idle issue

Postby cowhead8863 » Wed Mar 09, 2016 6:10 pm

Anyone have a picture of what this screw looks like?

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spiralout
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Re: Idle issue

Postby spiralout » Wed Mar 09, 2016 6:22 pm

Flat head screw here

cowhead8863
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Re: Idle issue

Postby cowhead8863 » Wed Mar 09, 2016 7:48 pm

Thanks guys!!! I backed that out and she is running right for once. I ran her for like 15-20m to get the juices flowing. I will let her rest tonight and start it again tomorrow and see if nothing changes

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littlebeaver
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Re: Idle issue

Postby littlebeaver » Wed Mar 09, 2016 8:02 pm

Ha ha ha cables, accelerator pump hahahah .. just the idle adjustment screw.... :lol: :lol: :lol:

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patbrandon1
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Re: Idle issue

Postby patbrandon1 » Thu Mar 10, 2016 12:40 am

cowhead8863 wrote:Thanks guys!!! I backed that out and she is running right for once. I ran her for like 15-20m to get the juices flowing. I will let her rest tonight and start it again tomorrow and see if nothing changes


Sure is a mystery that it was running right last year, then you simply winterized the bike, and just the idle adjustment screw was the problem. :?:

Had you adjusted that screw at all last year? I just like to know what the causes of problems are. :idea:

That screw cannot move that much by itself, especially since it wasn't being ridden. Did anyone else work on the bike at all since you rode last year? Is it possible that somehow the throttle mechanism that hits the idle screw got hit with something and bend it, causing the idle to be high?

I'm only asking because somehow something went wrong. Being a trouble shooter and machine mechanic in the production field, it is important to figure out what was wrong so it can be properly repaired, and perhaps avoided in the future.

If something got bent in that mechanism, it should be repaired. But I am happy for you that it got solved.

Ride safe.

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spiralout
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Re: Idle issue

Postby spiralout » Thu Mar 10, 2016 12:51 am

patbrandon1 wrote:
cowhead8863 wrote:Thanks guys!!! I backed that out and she is running right for once. I ran her for like 15-20m to get the juices flowing. I will let her rest tonight and start it again tomorrow and see if nothing changes


Sure is a mystery that it was running right last year, then you simply winterized the bike, and just the idle adjustment screw was the problem. :?:

Had you adjusted that screw at all last year? I just like to know what the causes of problems are. :idea:

That screw cannot move that much by itself, especially since it wasn't being ridden. Did anyone else work on the bike at all since you rode last year? Is it possible that somehow the throttle mechanism that hits the idle screw got hit with something and bend it, causing the idle to be high?

I'm only asking because somehow something went wrong. Being a trouble shooter and machine mechanic in the production field, it is important to figure out what was wrong so it can be properly repaired, and perhaps avoided in the future.

If something got bent in that mechanism, it should be repaired. But I am happy for you that it got solved.

Ride safe.

Wandering monkeys with screwdrivers, man. I've seen em do it.




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