Won't Start

[GS650E_81]

Yeah the garage is starting to heat up with the 78 degree weather here in Cincinnati.

Another huge PITA is the clamps, the PO is using some huge ones, they barely stay on the airbox boots. So it is just one big cluster altogether.

[tom203]

Yeah the garage is starting to heat up with the 78 degree weather here in Cincinnati.

Warm garage might mean soft compliant boots!
Anyway a little related humor- from Maine CL ad..... "simple fix if ur handy"

"1982 650gsl all there new plugs,wires,tires,can startwith gas in plugs will run nds carb cleaned simple fix i ur handy pipes good to 12075....."

[GS650E_81]

Another off the wall question..lol

Will the carbs leak if the float level is set to low?

[tom203]

Another off the wall question..lol

Will the carbs leak if the float level is set to low?

You'd think so, since there's less float pressure pushing up on needle seat, but as fuel dribbles in, float pressure increases- end of problem- so stop worrying about this and get some shoehorns.

[koolaid_kid]

No, the float will stabilize at exactly the same level in the fluid. Think of a ball floating in a fluid. Let's say 1/2 of the ball is above the water level, 1/2 below. Lower the fluid level. Unless it is touching the bottom, the bouyancy will remain constant so it will still be 1/2 and 1/2.

[tom203]

Since you refused to buy a toaster oven a while back... here's a idea that might maybe sorta help, see attached pic.
Find some neighbor with toddlers- lots of drinking cups like in pic- borrow four identical ones and promise to clean them.
With carb rack out of way, wedge these tapered cups into airbox boots to expand them- add hair dryer heat to soften boots and be patient , who knows what might happen.

[GS650E_81]

No, the float will stabilize at exactly the same level in the fluid. Think of a ball floating in a fluid. Let's say 1/2 of the ball is above the water level, 1/2 below. Lower the fluid level. Unless it is touching the bottom, the bouyancy will remain constant so it will still be 1/2 and 1/2.

If this is the case, why does the service manual say 22.4 on the float level? Mine is set to 19.4, the adjust tabs felt like they were going to snap, so I laid off.

[GS650E_81]

Since you refused to buy a toaster oven a while back... here's a idea that might maybe sorta help, see attached pic.
Find some neighbor with toddlers- lots of drinking cups like in pic- borrow four identical ones and promise to clean them.
With carb rack out of way, wedge these tapered cups into airbox boots to expand them- add hair dryer heat to soften boots and be patient , who knows what might happen.

Thanks for the advice. I will try this if all else fails.

[koolaid_kid]

If this is the case, why does the service manual say 22.4 on the float level? Mine is set to 19.4, the adjust tabs felt like they were going to snap, so I laid off.

Because the fluid is drawn up into the jets. It has to be at the correct level for the jets to function properly.
Case in point: I purchased my GPz for a song because the OP could not get any power out of it. I did a bunch of other work to it and then rebuilt the carbs. He had the float level set too low. It runs like a striped ape now.
Second case: I picked up a second set of carbs for my GS for next to nothing. The OP said he could not get them to work correctly so he gave up. I rebuilt them and guess what: He had the float level set too low. They now reside on my GS.
If yours are set at that level then you are not measuring correctly. Please read Nessism's tutorial on rebuilding carbs and take special care to understand how to check the level. It is critical on these carbs.

[GS650E_81]

Because the fluid is drawn up into the jets. It has to be at the correct level for the jets to function properly.
Case in point: I purchased my GPz for a song because the OP could not get any power out of it. I did a bunch of other work to it and then rebuilt the carbs. He had the float level set too low. It runs like a striped ape now.
Second case: I picked up a second set of carbs for my GS for next to nothing. The OP said he could not get them to work correctly so he gave up. I rebuilt them and guess what: He had the float level set too low. They now reside on my GS.
If yours are set at that level then you are not measuring correctly. Please read Nessism's tutorial on rebuilding carbs and take special care to understand how to check the level. It is critical on these carbs.

Granted I have no idea what the PO and PPO have done to these carbs, but I assume someone could of messed with the floats and set them to 19.4? As 22.4 should be factory, correct?

Either way I will try again to get them to read 22.4, but the adjust pin feels flimsy.

[cowboyup3371]

It feels flimsy but it doesn't take much to move it and it won't break. I used the tip of a screwdriver and barely pressed on it. If it does break, I think you'll have other issues to worry about anyway.

[Octain]

IIRC I had to put the clamps on afterwards. Just bent them into the shape I needed then maneuvered em around the boot using various tools and a flashlight. I was using old oem clamps. In your case it might not hurt to purchase a set(Yeah, more money). Or find someone on the board who might give ya a deal. I dont have any or I'd send em to ya. You really need oem clamps instead of some makeshift radiator hose clamp.

Dude, no kidding, the carbs on this bike are a serious royal pain.
Keep at it!!

[GS650E_81]

Almost broke my back tonight. No luck getting the carbs on. I discovered two tears in a airbox boot, so I might as well try and find some new ones.

So close, yet so far....

[GS650E_81]

I know I will get **** for this, but I wanted so bad to ride tonight...

Got home, proceeded to the bike. Somehow got three of the four airbox boots seated on the carbs. one is on but not clamped.

Put on tank and new fuel line and vaccum line. Fresh fuel.

Held choke wide open, fired right up! white smoked for 2 minutes then died... well damn.

I turned the air mixture screws out once more to 3 total each. I turned the idle screw in a little bit.

Held choke out about 1/4 it fired up and ran for 5 minutes, let out choke died...

Turned the idle screw a little more in. No choke fired it up, it idles about 1100 rpm!

Granted when I twist throttle hard it dies, and on the road twisting throttle it doesn't really get up and go.

But it felt SOOO good to get out and ride for just 20 minutes!!!

Fellow GSers, I mean this not as a slap in the face. I thank you all so much for all your help.

I am still going to get new airbox boots and get it vaccum synced.

Felt so nice to ride...

[koolaid_kid]

Congrats, dude. This has been an epic adventure, hasn't it?
You can do the fastest idle synch while you find someone in the Cinci area with a CarbTune. Again, well done.