still trouble with the carbs.


Information and questions on GL1100 Goldwings (1980-1983)
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whiteeaglepwl
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still trouble with the carbs.

Postby whiteeaglepwl » Tue May 12, 2015 1:10 pm



Ok I am going to try to explain this the best I know how. #3 carp has to much suction. #1-2-4 has the same. But when I try to sink 1-2-4 to #3 the bike will not run. My question is what is wrong with #3 that is had way to much suction.
Thanks phillip



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virgilmobile
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Re: still trouble with the carbs.

Postby virgilmobile » Tue May 12, 2015 2:11 pm

Too much vacuum compared to the others means simply that the throttle plate is closed further than the others.
To fix this,you must adjust the carbs in a specific order.
Sync the right side together..then the left side.and the last step is the right to the left.
Right side is done with the adjustment between the carb.
Left side the same.
Right to left is the adjustment on the left rear carb.
After each adjustment,you may need to adjust the idle screw to try and maintain the rpm near 900.

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virgilmobile
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Re: still trouble with the carbs.

Postby virgilmobile » Tue May 12, 2015 2:21 pm

Also,if your using mechanical gauges,i do suggest that they all be hooked to a single vacuum to see if they read the same.I threw out my gauges because not any two of them had the same readings.I use a different method.
I had a post about making a $25 carb sync.It uses 4 bottles and some old oil.

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littlebeaver
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Re: still trouble with the carbs.

Postby littlebeaver » Tue May 12, 2015 2:34 pm

the vacuum advance canister is run straight to carb #3 it could be that there is a hole in the diaphragm in that vacuum advance canister on the rear of the engine,,, could be the cause, not sure,, you could just block off the line or put something like a goft tee in the hose and see if that is what the problem is....That's my best guess... :D this canister diaphragm is a common issue, they get holy..lol

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whiteeaglepwl
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Re: still trouble with the carbs.

Postby whiteeaglepwl » Tue May 12, 2015 2:43 pm

Ok thanks I will try that sometimes this week will let yoi know when I get it thanks again phillip

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littlebeaver
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Re: still trouble with the carbs.

Postby littlebeaver » Tue May 12, 2015 2:54 pm

I have taken many of these canisters apart to do surgery and I made a bionic one out of using a automobiles canister for a v-8 engine, I had to reconfigure a lot of stuff and used dies and taps but I did it and I also used the oem spring thats in the canister for the auto one as the one in there is way to strong for this application, I just switched springs is all...Works perfectly though,, I just wanted to prove to myself that it could be done...It is still operating today after 5 years or so....

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virgilmobile
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Re: still trouble with the carbs.

Postby virgilmobile » Tue May 12, 2015 3:35 pm

The vacuum line that comes off #3 carb does not have a vacuum at a idle...AND it is not ported into the engine side of the carb.It is piped to all 4 carbs and shows up in a small brass nipple in back of the slides.Vacuum is created there as air flow increases.It should show zero vacuum at a idle and increase to (maybe) 6" at 3500 rpm.This is what moves the timing from the mechanical 23* mark to 34*

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whiteeaglepwl
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Re: still trouble with the carbs.

Postby whiteeaglepwl » Tue May 12, 2015 3:56 pm

Ok I will try to locate this vacum advance thing lol. And check that first thank you all for the help. Will post later.

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whiteeaglepwl
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Re: still trouble with the carbs.

Postby whiteeaglepwl » Thu May 14, 2015 4:57 pm

Ok I checked for the vacuum advance and I don't have one on my bike just the rubber hose from the carb going to a metal tube. Were can I get one. The honda dealer ship sayed they have been discontinued. Thanks again Phillip

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virgilmobile
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Re: still trouble with the carbs.

Postby virgilmobile » Thu May 14, 2015 11:00 pm

I'll suggest putting this vacuum canister and hose on the back burner till you get the carbs synced and the bike reliable.
The canister is on the rear of the engine..quite hard to locate too...well hidden just in front of the swingarm...the hose connection can be seen above the right foot peg area.
Most people don't even realize if it's working or not...if you verified it leaks,for the immediate future,you can simply plug the rubber hose and ride...Beave ,and a few others, have been able to retrofit a automotive canister to one...
It takes a bit of work to get one fitted and a solid knowledge about how it's suppose to work.
Having it working correctly can help the power curve above 2000RPM....Just to eek out that little bit extra of the engine.

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whiteeaglepwl
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Re: still trouble with the carbs.

Postby whiteeaglepwl » Fri May 15, 2015 2:11 am

Ok thanks I will try that first
Thanks again Phillip

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davefx
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Re: still trouble with the carbs.

Postby davefx » Thu Jun 04, 2015 6:08 pm

I too am having problems with my carbs. on my 1980 GL1100I All cyl. fire but #1 and #2 flood the plug instantly even if I screw those two pilot jets in all the way. The O-rings on all 4 cyl. are questionable but I havent been able to find O-rings that small that are the proper thickness. I have cleaned all 4 carbs, (much rust looking crap in bottom of bowls) replaced the jets under the floats and the diaframs and O-ring, springs for the air cut off valves. (they looked more of a window screen)
I was told these were the issue and spent nearly $200 on these parts, if I'd known then the high price of parts I would have bought a carb rebuilt kit but now trying to avoid parting with so much money
Anyone have any (useful) thoughts or suggestions?

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Re: still trouble with the carbs.

Postby Old Fogey » Fri Jun 05, 2015 6:29 pm

You won't cure flooding by playing with the screws. You don't mention setting the float height. It sounds to me like the setting is wrong or the floats are sticking.
Much more info here:
http://www.randakksblog.com/gl1100-carb ... /#more-826


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