first post and a carb sync problem...?


Information and questions on GL1100 Goldwings (1980-1983)
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robbiemcvee
Posts: 4
Joined: Sat Nov 20, 2010 7:15 pm
Location: United Kingdom
Motorcycle: GL1100

first post and a carb sync problem...?

Postby robbiemcvee » Sat Sep 24, 2011 3:48 pm



I should have introduced myself before posting about my problems with a gl1100 82... but i was wondering if you could help me?

I bought a gl1100 a while ago now which was standing for 3-4 years and have been working on it slowly, there is a rattle on low idle





So i went about the usual stuff, replaced the oil and filter (oil was like drinking chocolate) replaced the fuel filter and removed the carbs, did a limited clean-up of the jets, did a bench sync using a string from my guitar for a measure. replaced the o rings in the intake pipes and bolted it all back together.

I checked the compression and they are all around 140psi, fitted new plugs and started it up. I can get the left carbs to sync fine but the right carbs are way out and will not sync, and they are nearly drawing up the mercury. I took the cover off and had a look at the cams and they all seem ok, but had some milky oil on them, then i looked down the intake to the valves and they have oil laying on top of the valves.

There also seems alot of pressure in the bottom end when i take the oil filler cap off..

Not sure where to take this next, any help will be much appreciated



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RBGERSON
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had every year from 75 to 83

Re: first post and a carb sync problem...?

Postby RBGERSON » Sat Sep 24, 2011 5:49 pm

carbs back off..they must be done correctly..idle jets pulled or screwed out..they have side ports which shoudl be cleaned out too...Flaots set corectly, floats needles replaced? and may sure they seal..or gas will seep intot he oil if you leave the petcock on when the biek is off, set floats correctly..slides cleaned and polished..the carbs have to near perfect for the bike to run right.


LOts to check read this... http://ngwclub.com/forum/viewtopic.php?t=12168
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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littlebeaver
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Re: first post and a carb sync problem...?

Postby littlebeaver » Sun Sep 25, 2011 1:23 pm

Welcome to the site robbiemcvee... :D

robbiemcvee
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Re: first post and a carb sync problem...?

Postby robbiemcvee » Mon Sep 26, 2011 5:27 am

Thanks for the welcome ;-) I decided to do a limited clean as when i took the carbs apart it seemed that they were pretty clean. I didnt touch the idle screws as they are set, i suppose i'll start stripping them down some more and take a look...

Doesn't appear that there is leak down from the carbs into the oil, just moisture in the oil..

cheers all

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eklimek
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Re: first post and a carb sync problem...?

Postby eklimek » Mon Sep 26, 2011 11:52 am

"oil was like drinking chocolate" with compression off by 30 inches is not a preferred engine. The excess blow-by is symptomatic of the state of the cylnder rings and walls. What is the oil pressure?

The previous owner may not have been fully aware or fully communicated to you the extent of the problem(s). If running in this state and then left sitting for some time my crystal ball forsees bearing failure in your future without a rebuild. It's more than "just moisture". Not a big deal if the acquisition was cheap enough.

robbiemcvee
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Location: United Kingdom
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Re: first post and a carb sync problem...?

Postby robbiemcvee » Mon Sep 26, 2011 1:07 pm

Thanks for the reply, if there is excessive oil pressure (ive not measure this so far though) would there be oil in the breather, where as there doesn't appear to be any.. im not ruling out the possibility of bottom end/ rings, but id like to start from the top... do you know how the breather works is there a valve or a potential blockage that might need clearing?

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eklimek
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Re: first post and a carb sync problem...?

Postby eklimek » Mon Sep 26, 2011 1:56 pm

Crankcase blow-by exhaust is found on the left side upper surface of the crank case to rear of carburetor number #4.

Follow the 3/4 inch black hose up to the air cleaner box.

This is very unlikely to be blocked but easy enough to check.

mk197523
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Re: first post and a carb sync problem...?

Postby mk197523 » Mon Nov 21, 2011 9:25 am

Do you know that "oil was like drinking chocolate" with compression off by 30 inches is not a preferred engine. The excess blow-by is symptomatic of the state of the cylnder rings and walls.

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virgilmobile
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Re: first post and a carb sync problem...?

Postby virgilmobile » Mon Nov 21, 2011 11:44 am

I just briefly read the post and noticed this line..."There also seems alot of pressure in the bottom end when i take the oil filler cap off.."

I chased carb problems for a month on a 1000 and noticed the same excessive blowby at the oil cap.
The engine didn't sound right at all.
I finally found that the inner thermal sleeve in the exhaust header was swollen and restricting exhaust flow.This is very rare but can happen.
This created a lot of back pressure in the crank case and really mucked up the engine performance.
I replaced one header and wa la...Runs great.




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