1981 GL1100I Won´t Tickover.


Information and questions on GL1100 Goldwings (1980-1983)
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Hawkboy
Posts: 9
Joined: Sun May 24, 2015 7:35 pm
Location: Moose Jaw Sk Canada
Motorcycle: 1981GL1100i WIP
1987 XL600V Transalp

1981 GL1100I Won´t Tickover.

Postby Hawkboy » Mon May 25, 2015 8:41 pm



Hello to all. I am a new member and first time poster. I'm an old time biker from way back in the UK. Currently living in western Canada. I recently persuaded the wife to let me buy a 1981 GL1100. It has been sat for 11 years but looks very clean, kept inside a heated garage, but has not run for at least 5 years. Normal problems with the rear master cylinder, now sorted and of course sitting with old fuel. Not quite as bad as it sounds as the previous owner had managed to use Avgas, high octane aircraft fuel, which hasn't varnished up inside the carbs as much as you might think (when I drained the tank it did smell funny though). Using a trusty Clymer manual, I removed the carb set, disassembled and cleaned as much as I could and blew thru' with compressed air. All seemed fine so I put everything back together. I have changed the cam belts as I didn't want to bend a valve on start. And start it did. With fresh fuel, 10 seconds on the starter button, and away she went, but she won't tickover without the choke fully out. I believe the mistake I made was not going further with the carb cleaning. If I had known then about removing the slow run jet with the screw extractor, I might not have to rely on sea foam to do the job for me. Got some in the tank now and am letting it soak the carbs overnight and hopefully clear the blockage. My question is, in the experience of users out there, will I have to take the carbs apart again and take their life in my hands with a #2 screw extractor?



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robb
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Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: 1981 GL1100I Won´t Tickover.

Postby robb » Mon May 25, 2015 9:26 pm

Even my 89 won't start cold without choke. Give it choke and allow to run for about 1 minute at high rpm before taking off choke. If it runs OK then I would leave it to a test ride. It may not be as bad as you might think since some care was executed by previous owner.
My bike sat for 2 years in the garage and after 4oz seafoam and 2 tanks of fuel it was smooth as silk.

Hawkboy
Posts: 9
Joined: Sun May 24, 2015 7:35 pm
Location: Moose Jaw Sk Canada
Motorcycle: 1981GL1100i WIP
1987 XL600V Transalp

Re: 1981 GL1100I Won´t Tickover.

Postby Hawkboy » Mon May 25, 2015 9:45 pm

Robb, thanks for the reply. I did run it at higher revs until it warmed up, but even when it's at operating temp, it won't tickover. Warm with the choke full out only gives about 700 to 900 rpm, very rough and lumpy and wants to run down and stop with a chug, not actually getting high revs without holding throttle open. I'm not sure, but I think that the choke is providing/scheduling fuel instead of the slow run jet. I hope you are right about the sea foam. I'll let you know how I get on.

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robb
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Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: 1981 GL1100I Won´t Tickover.

Postby robb » Mon May 25, 2015 9:59 pm

You did say about 5 years standing so allow some time or teardown is coming. Try using a fan blowing on engine to keep temp down and start engine with full choke. As the choke is removed try to add throttle. Might get lucky and start good fuel flow.

Hawkboy
Posts: 9
Joined: Sun May 24, 2015 7:35 pm
Location: Moose Jaw Sk Canada
Motorcycle: 1981GL1100i WIP
1987 XL600V Transalp

Re: 1981 GL1100I Won´t Tickover.

Postby Hawkboy » Mon May 25, 2015 10:17 pm

I'll take some time and hope it clears out. If it doesn't clear, your right, another carb teardown is coming. It seems the only parts I didn't clean were the slow run jets, not included in the Clymer manual. I hope I get lucky with the sea foam, patience grasshopper.

Hawkboy
Posts: 9
Joined: Sun May 24, 2015 7:35 pm
Location: Moose Jaw Sk Canada
Motorcycle: 1981GL1100i WIP
1987 XL600V Transalp

Re: 1981 GL1100I Won´t Tickover.

Postby Hawkboy » Sun Jun 07, 2015 8:06 pm

The sea foam didn't work. I had to take the carbs off again. The idle jets would have to be removed for cleaning. I didn't want to use a #2 screw extractor as my experience is that the small sizes break off inside the head very easily. What I did was very carefully tapped the inside bore of each jet with a 4-40 thread and used a corresponding brass bolt, nut and washer as an extractor. Worked like a charm. Once they were out I could see the orifice in the waisted portion, and the emulsifier holes of all four jets were completely blocked, no wonder it wouldn't tick over. I soaked the jets in some paint stripper overnight to break down the varnish build-up and eventually managed to get one strand of a wire brush through the central orifice. That hole is small, the piece of wire I used measured at 0.013" (0.33mm). I don't know where the jet size #35 equates to, but possibly the metric dimension 0.35mm maybe. One other thing I found was that the orifice in the base of the jet pump cover was slightly blocked. This is the small square brass block forced into the hole in the cover. As this is the lowest part on the carbs set, it stands to reason that this would varnish up as the fuel dried, something to watch out for in the future. Anyway all back together and it started and idled straight away, success - happy dance. I had done a static sync and that was enough to get it going. It is rideable and I have been round town (very proud - big smile) and used it for the work run a couple of times. All I need to do now sort out the weeping fork seals and the slight misfire at higher revs (HT lead maybe?) And I'll be good for longer runs as summer is here.

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littlebeaver
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Motorcycle: 1981 gl 1100 I , 79 Yamaha XS11
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Re: 1981 GL1100I Won´t Tickover.

Postby littlebeaver » Mon Jun 08, 2015 10:42 pm

good deal on the tapping of the jet,, I had mentioned that years ago on another site....did you clear the center hole as well as the side holes? there's one right down the center of the jet... :D

Hawkboy
Posts: 9
Joined: Sun May 24, 2015 7:35 pm
Location: Moose Jaw Sk Canada
Motorcycle: 1981GL1100i WIP
1987 XL600V Transalp

Re: 1981 GL1100I Won´t Tickover.

Postby Hawkboy » Mon Jun 08, 2015 11:05 pm

Yes I did. That was the small hole cleared out with the single strand from a wire brush. That single strand measured 0.33mm dia.

For tapping the jets, I only had a first tap so I had to grind a bit off the tip to stop the point damaging the jet orifice in the middle of the waisted portion. When tapping I was really careful to turn back every quarter turn to break off the swarf at the lead of the thread. Breaking off a tap in there would have been just as bad as breaking a screw extractor.

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littlebeaver
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Re: 1981 GL1100I Won´t Tickover.

Postby littlebeaver » Mon Jun 08, 2015 11:34 pm

that is correct sir,, breaking a tap is about the same,,, it takes some skill but it can be done....Lots of guys like the drywall screw method... having the jets clear now the bike will idle fine and you can actually sync the carbs now...I have no idea how guys say they sync the carbs proper with clogged jets and they will get clogged alright,,, especially if they sit for a time.... I have seen it many times...Glad you got it figured out... :D

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littlebeaver
Posts: 4420
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Location: Kansas City, Kansas
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Special, 82 Kawa 750 CSR, 82 Kawa 750 LTD, 03 Kawa Nomad 1500, 99 Kawa Voyager 1200

Re: 1981 GL1100I Won´t Tickover.

Postby littlebeaver » Mon Jun 08, 2015 11:58 pm

One sure way of knowing if the idle jets are clear is to put it in 1st gear and release the clutch, that baby should glide away without any chattering...

Hawkboy
Posts: 9
Joined: Sun May 24, 2015 7:35 pm
Location: Moose Jaw Sk Canada
Motorcycle: 1981GL1100i WIP
1987 XL600V Transalp

Re: 1981 GL1100I Won´t Tickover.

Postby Hawkboy » Tue Jun 09, 2015 12:06 am

Thanks Littlebeaver, I'll try that. The big green beast is ridable, but I really need to synch the carbs properly. I'm sure that will smooth things out, but I couldn't wait to ride it. I know, I'm weak, but it was a really nice day.....




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