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1980 gs550 e

Strmstrss

Strmstrss

Forum Newbie
Hello GSResources community.

I picked this up off a friend. This is my first time working on a motorcycle and I'm extremely curious and excited to learn all I can.
The goal is to keep it close to original. Clean it all up and get it running really well.

Engine seems good... compressions good, spark... starts right up....But was having a hard time idling and stalled out unless you fed it some gas. I already pulled apart the carb and found destroyed o-rings on the intake boots and multiple leaking bowl gaskets. It's been neglected and I will post how dirty everything is/was. I'm on the path of pretty much pulling it completely apart, cleaning and fixing things along the way.

Like i said ill post lots of pictures and look forward and appreciate anyones advice . Fundamentally I'm following the advice in Nessism post for newbies and addressing carbs, valves, fuel delivery possible air leaks and have been cleaning and rebuilding the carbs thanks to his guide.

My first head scratcher is that my #2 carb seems to be a slightly different model than the other 3. It has a small hole on on the lip of the bowl on the air box side. it also duent have the round relief in the middle of the lip on the intake side. Im assuming someone along the way frankensteined the rack. I imagine this will cause problems? all four bowl lids are the same and the small hole does not get covered.

Anyway, I'll make a post with images of the carbs.
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54732674921_be272bc8b4_b.jpg
 
Here are some photos of the carbs.

54733036585_664994fe49_b.jpg
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54732892658_9c608d6a4d_b.jpg
wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==
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54732906379_2cc1edede4_b.jpg
wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==
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54732905984_24210b1a17_b.jpg
wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==
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One, Three, Four have this...

54732892813_27506a7791_b.jpg
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Then 2 has this...

54733036755_3afdd4f455_b.jpg
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Welcome, and congratulations with your project bike. Looks nice :)

I would recommend you post your carb question in the "Carb/Fuel/Exhaust​"-section of the forum, as it betters your odds of finding a solution.
Keep documenting your progress!
 
LarsKroghStea said:
Welcome, and congratulations with your project bike. Looks nice :)

I would recommend you post your carb question in the "Carb/Fuel/Exhaust​"-section of the forum, as it betters your odds of finding a solution.
Keep documenting your progress!
Click to expand...

Thank you for the advice. I'll do that!
 
I've never studied those holes on the gasket surface before, so I'm not sure what the deal is, but I think they relate to carb venting in some way. I have a set of similar carbs that I can dig deeper on, and then provide you some more valuable feedback, but off the top of my head, I think your carbs are fine, and you should just proceed with the rebuild, assuming the carb bodies are fine.

BTW, those bodies are looking pretty rough. Dark metal suggests someone did a getto dip in something like pinesol. Not good. The white corrosion is what's more troubling. That crap is likely down into the carb passages you can't see. Do your best to clean the bodies well. Shoot carb spray through all the passages and watch where it comes out. All carbs should be the same. In particular, study the pilot passages; there are a series of small holes on the wall of the carb throat, and all must be open or running problems will occur.
 
Nessism said:
I've never studied those holes on the gasket surface before, so I'm not sure what the deal is, but I think they relate to carb venting in some way. I have a set of similar carbs that I can dig deeper on, and then provide you some more valuable feedback, but off the top of my head, I think your carbs are fine, and you should just proceed with the rebuild, assuming the carb bodies are fine.

BTW, those bodies are looking pretty rough. Dark metal suggests someone did a getto dip in something like pinesol. Not good. The white corrosion is what's more troubling. That crap is likely down into the carb passages you can't see. Do your best to clean the bodies well. Shoot carb spray through all the passages and watch where it comes out. All carbs should be the same. In particular, study the pilot passages; there are a series of small holes on the wall of the carb throat, and all must be open or running problems will occur.
Click to expand...

Thanks Ed! This is very helpful feedback. Going to get some work done this weekend.
 
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