GS650G Carb Issues

[usedktm]

Hey all. It's been a few years since I've posted but the '82 started acting up. Starts great when the engine is cold, but get it hot it needs full throttle to start. It idles good, midrange is good, and pulls hard full throttle through all the gears. I also noticed gas dripping out of the overflow hose too. Any thoughts??

[Steve]

Well, you obviously have a very rare set of carbs there.

The CV-style carbs on the '82 650 do not have overflow tubes.

There could be several things wrong, they would have to be eliminated one by one to get the bike running right.

With a posted location of "somewhere, on earth", I don't know if you might be close enough to stop by and let me help you tune it, so I guess I'll just have to say "good luck, hope you can work it out".

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[tom203]

I'm sensing a petcock issue...but I like to blame simple stuff first. Do you understand how the petcock is supposed to work?? Do you know how to test it for correct operation?

[Charlie G]

Well, you obviously have a very rare set of carbs there.

The CV-style carbs on the '82 650 do not have overflow tubes.

There could be several things wrong, they would have to be eliminated one by one to get the bike running right.

With a posted location of "somewhere, on earth", I don't know if you might be close enough to stop by and let me help you tune it, so I guess I'll just have to say "good luck, hope you can work it out".

.

.........and ridicule is always a welcoming, constructive gestuer, isn't it Steve? Feel better?

[Steve]

.........and ridicule is always a welcoming, constructive jester, isn't it Steve? Feel better?

A "jester" is a clown, not exactly "constructive". Probably not the word you wanted, but who am I to suggest otherwise?

A gesture is a movement, usually of the hand or body, to express an idea or a meaning. Probably the word you were looking for, but who am I to even suggest that?

A post was made, looking for help, but barely had any information in it. He might have more responses with "hey, I have a problem with my bike, can anybody help?" I even offered to help in-person, but I don't know if he is within range.

And, yes, I <do> feel better.

EDIT: I see that you have edited your post to change the word "jester", but it's still wrong.

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[usedktm]

yeah, the first response I just took a deep breath, and thought "ok I'm an idiot". Now, I just stood on my head the fuel is coming out of the air box drain hose. I took the fuel line off and no gas ran out of the fuel valve. Took the vacuum hose off, gave it a good "suckin'" and I got a good stream off fuel running out. I guess a fuel valve could be intermittent? By the way, I'm in Topeka, Ks.

[Big T]

Sounds like you have a couple of fuel issues
Start with a new petcock
And, check the oil for gas contamination

[Charlie G]

A "jester" is a clown, not exactly "constructive". Probably not the word you wanted, but who am I to suggest otherwise?

A gesture is a movement, usually of the hand or body, to express an idea or a meaning. Probably the word you were looking for, but who am I to even suggest that?

A post was made, looking for help, but barely had any information in it. He might have more responses with "hey, I have a problem with my bike, can anybody help?" I even offered to help in-person, but I don't know if he is within range.

And, yes, I <do> feel better.

.

Once again you are back onto your old crutch of pointing out errors in someones text, as your poor manors fall short. Be nice my friend.

[usedktm]

DING-DING-DING!! We have a winner! It's the fuel valve. Went for a ride came back and took the fuel line off, didn't leak. After about 20 minutes went back out connected fuel line, it started right up. Disconnected fuel line again.......didn't leak. 20minutes later, connected line, started right up. Disconnected line again and DRIP, DRIP, DRIP!! As of now it's still leaking into a gas can. Thanks for your help, sorry for coming off like a dumb ass in the first post. It's hell trying keep maintenance on fleet of 7 motorcycles.

[Steve]

Once again you are back onto your old crutch of pointing out errors in someones text, as your poor manors fall short. Be nice my friend.

Sorry, but I only have one manor, and it is not falling, short, long or otherwise.

My manners, on the other hand, could probably use some work, but they are provoked by someone who tries to correct MY mistakes by making some of their own.

I learned a LONG time ago that there are far too many mistakes on the internet for me to correct even a small percentage of them, so I just gave up trying. I can only make decisions and judgements based on information presented. If it's missing, I can only hazard a guess. If it's wrong, well, that is another judgement.

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[Big T]

DING-DING-DING!! We have a winner! It's the fuel valve. Went for a ride came back and took the fuel line off, didn't leak. After about 20 minutes went back out connected fuel line, it started right up. Disconnected fuel line again.......didn't leak. 20minutes later, connected line, started right up. Disconnected line again and DRIP, DRIP, DRIP!! As of now it's still leaking into a gas can. Thanks for your help, sorry for coming off like a dumb ass in the first post. It's hell trying keep maintenance on fleet of 7 motorcycles.

Sounds good

Now, please go back on your profile and update your location and bike (in the signature) do everyone here knows what bike you're posting about.

Steve will be happier and I can take over as the grumpy old man around here

[Steve]

Steve will be happier and I can take over as the grumpy old man around here

It's about time you stepped back up to the plate.

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[abaton6]

I'm having a no fuel flow issue with MY 82 650 as well. It has a new petcock,...Ebay and a transparent fuel line with a plastic fuel filter. Wondering is the filter is too large a space to allow the vacuum to work.

[Steve]

I'm having a no fuel flow issue with MY 82 650 as well. It has a new petcock,...Ebay and a transparent fuel line with a plastic fuel filter. Wondering is the filter is too large a space to allow the vacuum to work.

I would suggest that the plastic fuel filter might be a problem. There are already fuel filters on the bike (yes, that's plural), you shouldn't need any more.

And, ... the space in the filter should have no relationship to the operation of the vacuum.

The vacuum line should connect from the port on #2 carb to the nipple on the petcock that is closer to the frame. The fuel line should run from the larger nipple on the petcock to the T between carbs 2 and 3.

If you have some spare hose, run a line from the fuel port on the petcock to a catch can. Connect another line to the vaccum port, then suck on it. Watch for fuel flow when you suck, then watch for it to stop when you stop sucking. That will diagnose the first part of the fuel flow chain.

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[abaton6]

Thanks,...I'll try this tomorrow.