loose cable and i dont know where it belongs and a dead misfire at idle


Information and questions on GL1100 Goldwings (1980-1983)
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roadwanderer2
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loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Mon Mar 02, 2015 3:52 pm



ok, here's 2 new problems, 1st, pictured below is a cable that runs from somewhere in the middle of the motor (pic 1) and goes down to the front of the bike (pic 2 and 3). it came loose and I don't know where it was connected to or what it does.

2nd when I started my bike up to take it out for a run, it has a dead miss at idle, but when I give it throttle, it goes away and the bike is totally responsive. I removed the s/plugs, cleaned and re gapped them, put them back in, took the air filter out, cleaned that out with a blow gun, I did find that in the bottom of the air filter housing a lot of white junk that looked like bird crap, so I cleaned all that out before I put the filter back in. buttoned everything back up and started it back up again, and its still has that dead miss when it idles. anyone have any ideas? could some of that crap that I found in the air filter housing make its way down into the carbs via the plenum? and will it eventually pass thru and stop the dead miss at idle. im going out for a ride on the interstate to open it up to see if I cant get it to go away, i'll be back in about an hour or so.

stuart.
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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby WingAdmin » Mon Mar 02, 2015 4:39 pm

That cable does not look factory. Did your bike have an aftermarket cruise control installed?

roadwanderer2 wrote:ok, here's 2 new problems, 1st, pictured below is a cable that runs from somewhere in the middle of the motor (pic 1) and goes down to the front of the bike (pic 2 and 3). it came loose and I don't know where it was connected to or what it does.

2nd when I started my bike up to take it out for a run, it has a dead miss at idle, but when I give it throttle, it goes away and the bike is totally responsive. I removed the s/plugs, cleaned and re gapped them, put them back in, took the air filter out, cleaned that out with a blow gun, I did find that in the bottom of the air filter housing a lot of white junk that looked like bird crap, so I cleaned all that out before I put the filter back in. buttoned everything back up and started it back up again, and its still has that dead miss when it idles. anyone have any ideas? could some of that crap that I found in the air filter housing make its way down into the carbs via the plenum? and will it eventually pass thru and stop the dead miss at idle. im going out for a ride on the interstate to open it up to see if I cant get it to go away, i'll be back in about an hour or so.

stuart.

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roadwanderer2
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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Mon Mar 02, 2015 5:42 pm

WingAdmin wrote:That cable does not look factory. Did your bike have an aftermarket cruise control installed?

roadwanderer2 wrote:ok, here's 2 new problems, 1st, pictured below is a cable that runs from somewhere in the middle of the motor (pic 1) and goes down to the front of the bike (pic 2 and 3). it came loose and I don't know where it was connected to or what it does.

2nd when I started my bike up to take it out for a run, it has a dead miss at idle, but when I give it throttle, it goes away and the bike is totally responsive. I removed the s/plugs, cleaned and re gapped them, put them back in, took the air filter out, cleaned that out with a blow gun, I did find that in the bottom of the air filter housing a lot of white junk that looked like bird crap, so I cleaned all that out before I put the filter back in. buttoned everything back up and started it back up again, and its still has that dead miss when it idles. anyone have any ideas? could some of that crap that I found in the air filter housing make its way down into the carbs via the plenum? and will it eventually pass thru and stop the dead miss at idle. im going out for a ride on the interstate to open it up to see if I cant get it to go away, i'll be back in about an hour or so.

stuart.


wing, I haven't the slightest idea, but when I push and pull on the cable, I can hear something down in the front of the bike. could this cable be from an engine heat vent that opens and closes with the throttle? what ever it is, I have to raise the front of the bike up and look under the front.

stuart.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Mon Mar 02, 2015 6:00 pm

wing, I took my bike out on the interstate, ran it up to 90mph for about 30 miles, it ran great, instant throttle response thru all the gears, but once I stopped and let it idle, it still has that dead misfire. I bought 2 cans of Seafoam, im going to take the air filter back out and run some of it directly down the plenum to see if that makes any difference. I THINK what ever was in the filter housing got down into the carbs via the plenum and its clogging up the jets. I will also do a "finger to the cylinder hole" to see maybe one of the cylinders has lost any compression, and take off the fuel filter and see if its got any "junk" in it.

stuart.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Mon Mar 02, 2015 6:35 pm

well, the Seafoam didn't work, all it did was fill my garage up with white smoke, and the bike is still running and still has a dead miss at idle, although the smoking as decreased, its still smoking. it sounds like a 6 cylinder running on 5 cylinders, but only at an idle. I cant pull each plug wire off individually, because of those stupid connected boot covers. now im starting to wonder if there's something more serious going on here.

I don't have a real compression tester so I cant take any readings. I might be able to borrow or rent one from my local O'reillys auto parts store, but its gonna have to wait until I get back from the hospital. tomorrow I go for my eye surgery and I wont be back until Wednesday evening. I have to leave here at 4am est to be there by 7am cst. its a 2 1/2 hour plus drive thru 2 times zones.

stuart.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby squirrel » Mon Mar 02, 2015 7:09 pm

Hi can't help with the cable but the connected boot covers I sliced the underside of mine with no ill effects . It helps enormously when removing the plugs/caps saves time and hassle now I just push them out

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Mon Mar 02, 2015 8:15 pm

squirrel wrote:Hi can't help with the cable but the connected boot covers I sliced the underside of mine with no ill effects . It helps enormously when removing the plugs/caps saves time and hassle now I just push them out


can they be cut off completely without doing any harm to the plug cap covers?. I guess I could try that, but like I said in my last posting, its gonna have to wait until I come home from the hospital on Wednesday. that also depends on if they have to cut my left hand open to remove a piece of metal that's logged inside of it. :cry:. if they have to do surgery on my hand, everything is gonna be on hold.

stuart.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Mon Mar 02, 2015 8:42 pm

ok, let me ask this......if worse came to worse, can a 84 GL1200 motor fit onto an 83 1100 frame without too many problems or major modifications?

stuart.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby Earl43P » Tue Mar 03, 2015 10:54 am

Interesting and good luck with your hand.

The goop at the bottom of your air cleaner housing is moisture laden oil residue from the crankcase vent. What you saw is completely normal, but may be an indication for you to remove and empty the catch can located by the swingarm on the leftish side. It looks like a plastic container clamped on, with a single large diameter tube connected to it (other end is to your air filter housing).

As for your dead miss at idle, I wouldn't suspect an ENGINE problem so much as a carburetor problem, since it runs well at higher speed/rpm. Could be as simple as a clogged idle jet on that cylinder's carb. I wouldn't mess with that first though....

Certainly nothing about your problem indicates replacing the engine! The 84 1200 engine does lend itself to installation onto your 83, since they share their basic design. Later 1200's put the spark pickups on the front, but the 84 was just about identical to the 83 and earlier 1100s vacuum advancer. So, if you had to pick an engine to transplant, the 84 is THE one to use so that you don't have to "modify" the frame (and wiring) to make it fit. (Pretty sure Joe Drum did this swap, among others)

Before getting to deep into this engine transplant idea, may I suggest taking a really good look at your coils, the HT leads, the plug caps and the resistors inside those caps? I say this because I too had a miss quite a while ago (on my 82 with its 83 engine) when riding in the rain. I was able to trace that down to poorly attached HT lead at the coil and a loose plug cap. Not sure which fixed the miss, but it's gone. If they are original, your 83 HT leads should unscrew from the coils. Earlier versions did not detach.

I've never seen a cable end like the one you found, but my 82 is naked rather than dressed, so who knows! I'm pretty certain it has no bearing on your misfire.
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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby WingAdmin » Tue Mar 03, 2015 11:30 am

Whatever that cable is, it's definitely not factory. My money is on an aftermarket cruise control, but you'll have to pull the fairing lower off and trace its source to know for sure.

As for the missing, you say the bike is responsive when making power, so I don't think it's going to be compression related. It's obviously making spark OK at speed as well.

Make sure your battery is at a sufficient voltage at idle - when idling, the bike isn't making enough power to charge the battery, so the engine is actually running off the battery - and if the battery is weak, you could have spark issues.

You could also have a clogged idle jet in one of your carburetors, causing one cylinder to run lean.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby f1xrupr » Tue Mar 03, 2015 12:33 pm

As for the loose cable, you might check to see if you still have two (2) cables going to your cable bell at the carbs (one pulls on excel-one pulls on decell), and as far as the dead miss at idle, that can be a symptom of a burnt valve, or, valve needs adjusting. Compression test might be in order if adjusting valves don't help...
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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby f1xrupr » Tue Mar 03, 2015 12:38 pm

Oh...one more thing (that's my Colombo impression), I guess you haven't hydrolocked her lately have you....and bent a rod?
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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby squirrel » Tue Mar 03, 2015 2:22 pm

The boot /spark plug covers can be removed you just unscrew the spark plug caps ( one at a time) and pull the spark plug wire through and reconnect . Personally I leave mine on with the split on the inside as it helps keep the rain out (it rains alot over here ) I also have the same chrome plug covers as yours and they're a pain to remove with the fiddly allen screws .

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby squirrel » Tue Mar 03, 2015 2:22 pm

The boot /spark plug covers can be removed you just unscrew the spark plug caps ( one at a time) and pull the spark plug wire through and reconnect . Personally I leave mine on with the split on the inside as it helps keep the rain out (it rains alot over here ) I also have the same chrome plug covers as yours and they're a pain to remove with the fiddly allen screws .

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Mon Apr 20, 2015 5:41 pm

pictured below is a cable that runs from somewhere in the middle of the motor (pic 1) and goes down to the front of the bike (pic 2 and 3). it came loose and I don't know where it was connected to or what it does.

QUOTE wingadmin, That cable does not look factory. Did your bike have an aftermarket cruise control installed?

ok, you might remember this posting I made about a month ago about a cable that I didn't know where it came from or goes to, well, as I was taking the radiator off the frame, I found where this cable goes to. it goes to a black box that was mounted on the frame behind the right lower fairing. upon removing the box, I noticed it plugs into a connector that goes thru a hole in the right side of the inner fairing. this is what the box plugs into, (see pics below), after I removed the box I found 4 Phillips screws which I removed to see what's inside the box. the cable seems to be electronically controlled to move back and forth within the box via the small gear that you can see on the left side of the inside of the black box. does anyone have any idea what the heck this thing is for and what its suppose to do? could it be some kind of radio static suppressor, because a while back, I removed one that was hanging down from the reg/rec that I thought wasn't going anywhere?

stuart.
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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby skier » Mon Apr 20, 2015 6:03 pm

Aftermarket cruise control, I'm thinking.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Mon Apr 20, 2015 6:18 pm

hey skier,

I think I have to agree with both you and wingadmin on this. looking at the back of this box where the cable goes inside, it does remind me of an electronic car cruise control by the shape of the cable, and where it went to in relationship to where the throttle linkage is. im going to trace the connectors that run inside the fairing to see where they go to, and once I put the motor back on the bike, im going to take this to a Honda motorcycle dealership and see if they can identify it.

I hope by unplugging it from the fairing side of the harness it wont have any affect on how the bike runs.

stuart.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby WingAdmin » Tue Apr 21, 2015 12:38 pm

Definitely an aftermarket cruise control. Interesting that it uses what looks like an electric servomotor instead of vacuum for the actuator. Unplugging it should not have any effect on how the bike runs.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Tue Apr 21, 2015 4:21 pm

hey Wingadmin,

yeah, it is very strange how this thing was attached. im sure the cable was connected to the throttle linkage somewhere in the middle of the bike, but now that its not connected anymore, i have no plans on reconnecting it again. thanks for letting me know about it not hurting anything by leaving it unplugged.

stuart.

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby retep88 » Fri Apr 24, 2015 10:15 pm

did you figure out what was up with your idle misfire?

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Re: loose cable and i dont know where it belongs and a dead misfire at idle

Postby roadwanderer2 » Sat Apr 25, 2015 6:28 am

'mornin retep:

actually i did. both plastic spark plug boots on the right side of the motor had pieces of the boots broken off down by the spark plugs and they were arcing against the cylinder head.

stuart.




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