GL 1100 1980 engine knocking


Information and questions on GL1100 Goldwings (1980-1983)
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aandyr
Posts: 7
Joined: Wed Aug 28, 2013 4:59 pm
Location: Warwickshire
Motorcycle: 1980 GL 1100.Naked

GL 1100 1980 engine knocking

Postby aandyr » Wed Aug 28, 2013 5:42 pm



Hi all,I hope you can help me. I got this bike which was a project off the p/o.He said he could'nt get it to run right on no 2 cyl,anyway i thought that it should'nt be too hard to sort.Got it back and set about it.plugs ok but seemed wet/oily?.Removed carbs,found all kinds of horrors. black silicon gunged everywhere, float heights all over the place.So cleaned up and reset floats and air screws. fitted carbs back, No joy.so cut a long story engine turned out to be buggered had been standing for years and rust pits appeared in bores 2+4 oiling plugs cause found.Roll forward ,another engine purchased £ 400.42.000 miles.cleaned ,painted and fitted carbs refitted [ origional ones ] no smoking or oiling plugs but will not run below 1500 1000 rpm and sounds like someones got a sledge hammer inside the engine [ i forgot to mention the old engine did this as well ] Synched the carbs no difference.I must have had the carbs off 4 times and im getting pretty sick of it now.so any thoughts would be appreciated.Many thanks aandyr.



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80-GL100-INT
Posts: 162
Joined: Sun Mar 17, 2013 8:53 pm
Location: Bedford, In.
Motorcycle: 1980 GL1100I Interstate (current)
Previously Owned:
1981 CB 750 Custom
1976 CB 750 Super Sport (punched to 900)
1986 Kawasaki 440 LTD
1974 Suzuki 550
1986 Kawasaki Ninja 600 (First Street Bike-way back in '88)
Contact:

Re: GL 1100 1980 engine knocking

Postby 80-GL100-INT » Wed Aug 28, 2013 7:52 pm

Before and after the first time I rebuilt my carbs. I had that same Knocking noise. While reading through a thread I came across this: Many thanks to littlebeaver for this vid.





After removing the carbs again and removing the jets I found my cleaning and soaking was not enough, the jets were still gummed up. After removing them and a better cleaning, the knocking went away. That being said, while I had the carbs. off that last time I also took the liberty of adjusting the valves. Even though only 3 of them were off(#1 in., #3 ex., and #4 ex.), I can't be 100% sure of which ended the knocking.
If "WE THE PEOPLE" don't defend our rights...Who will?
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moffat
Posts: 264
Joined: Thu Aug 05, 2010 2:30 pm
Location: Northwich United Kingdom
Motorcycle: 1982 GL1100
Interstate

Re: GL 1100 1980 engine knocking

Postby moffat » Thu Aug 29, 2013 1:46 am

Have you checked the valve timing as it the can belts are a notch off as happened on my bike it rattled like an amorous skeleton inside an empty
biscuit tin

aandyr
Posts: 7
Joined: Wed Aug 28, 2013 4:59 pm
Location: Warwickshire
Motorcycle: 1980 GL 1100.Naked

Re: GL 1100 1980 engine knocking

Postby aandyr » Sun Sep 01, 2013 4:19 am

Hi moffat.It had new belts fitted just before i got the engine.I removed the covers to polish them and checked the timing as a matter of course..It runs ok above 2000 [ no knocks ] Im sure it's carbs.Many thanks for replying.

aandyr
Posts: 7
Joined: Wed Aug 28, 2013 4:59 pm
Location: Warwickshire
Motorcycle: 1980 GL 1100.Naked

Re: GL 1100 1980 engine knocking

Postby aandyr » Sun Sep 01, 2013 4:27 am

Hi 80-GL100-INT .I think thats where my problem lies.Im sure it's just a blocked drilling somewhere .i believe the p/o said that it had been standing for 10 years,and that he could'nt get it running right.I did'nt think those jets came out,So thats it,carbs off again and remove them.Many thanks,aandyr.

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80-GL100-INT
Posts: 162
Joined: Sun Mar 17, 2013 8:53 pm
Location: Bedford, In.
Motorcycle: 1980 GL1100I Interstate (current)
Previously Owned:
1981 CB 750 Custom
1976 CB 750 Super Sport (punched to 900)
1986 Kawasaki 440 LTD
1974 Suzuki 550
1986 Kawasaki Ninja 600 (First Street Bike-way back in '88)
Contact:

Re: GL 1100 1980 engine knocking

Postby 80-GL100-INT » Sun Sep 01, 2013 11:41 am

aandyr wrote:Hi 80-GL100-INT .I think thats where my problem lies.Im sure it's just a blocked drilling somewhere .i believe the p/o said that it had been standing for 10 years,and that he could'nt get it running right.I did'nt think those jets came out,So thats it,carbs off again and remove them.Many thanks,aandyr.


I soaked each carb for 2 days in carb. cleaner, and about 3-4 hours ea in an ultrasonic. Blew them out w/air comp. and had air movement through every passage, but it still wasn't clean enough. I knew they were pressed in and there was a way to get them out, I've just never had one really need to after my usual cleaning regiment. I have to give the credit to littlebeaver for posting that vid., I never thought of using a screw ext. to remove them, now I have added a set to my carb cleaning arsenal. Another tip I'll pass your way is: a brass wire brush for a .22 cal. fits very nicely in all the jet passages and will do a great job of cleaning out the threads of the idle jets, just make sure you get the o-ring and washer out first.
If "WE THE PEOPLE" don't defend our rights...Who will?
"Government's first duty is protect the people, not run their lives."...Ronald Reagan

http://www.powdercoat.tk/

aandyr
Posts: 7
Joined: Wed Aug 28, 2013 4:59 pm
Location: Warwickshire
Motorcycle: 1980 GL 1100.Naked

Re: GL 1100 1980 engine knocking

Postby aandyr » Sat Sep 07, 2013 5:25 pm

Thanks for that info /vid link about removing the jets with screw extractors.I have to say, Itwas'nt as easy as the vid shows,I had soaked the jets for a couple of days,and then tried to remove them,but they were'nt budging.I have an old set of carbs,so i practised on one.The screw extractor just kept chewing brass out,so i tried carefull heating with a gas blowlamp and eventually got one free.Even with it out it took ages to clear the jet,But it paid off and now its running a lot beter.Ill have to check the synch again.Also how do you get to adjust the air screws with carbs fitted ,Many thanks .aandyr.

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80-GL100-INT
Posts: 162
Joined: Sun Mar 17, 2013 8:53 pm
Location: Bedford, In.
Motorcycle: 1980 GL1100I Interstate (current)
Previously Owned:
1981 CB 750 Custom
1976 CB 750 Super Sport (punched to 900)
1986 Kawasaki 440 LTD
1974 Suzuki 550
1986 Kawasaki Ninja 600 (First Street Bike-way back in '88)
Contact:

Re: GL 1100 1980 engine knocking

Postby 80-GL100-INT » Sun Sep 08, 2013 7:17 pm

Some use a flexible screwdriver, I just use a short one.
If "WE THE PEOPLE" don't defend our rights...Who will?
"Government's first duty is protect the people, not run their lives."...Ronald Reagan

http://www.powdercoat.tk/

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littlebeaver
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Location: Kansas City, Kansas
Motorcycle: 1981 gl 1100 I , 79 Yamaha XS11
Special, 82 Kawa 750 CSR, 82 Kawa 750 LTD, 03 Kawa Nomad 1500, 99 Kawa Voyager 1200

Re: GL 1100 1980 engine knocking

Postby littlebeaver » Sun Sep 08, 2013 11:14 pm

Yeah those jets can be a big pain if they have been sitting for a long time and are about rusted in place...almost would need a little heat on them, anytime you use a easy out bit, you are taking a very high risk because if you break one off, you are literally screwed.....I had previously removed my jets so they came out really without a problem, the first time I removed them it made me sweat because I thought I'd break off the bit for sure.... It's really just for the insane and I did note not to do it I think :shock: but not in the video.. I was showing that it can be done...

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moffat
Posts: 264
Joined: Thu Aug 05, 2010 2:30 pm
Location: Northwich United Kingdom
Motorcycle: 1982 GL1100
Interstate

Re: GL 1100 1980 engine knocking

Postby moffat » Mon Sep 09, 2013 12:32 pm

I picked up a great tip on this website a couple of years ago about left hand turn drill bits instead of the standard right hand ones. I have used the left handed drills to good effect as they turn anti clockwise and the stubborn bit that needs removing is encouraged to unscrew as well at the drill bit imparting heat at the same time due to friction. Better than easy outs I think?




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