HELP!! newb here

[dustysnakes]

hey guys first off just let me say that im so happy to find these forums you wouldnt believe the trouble i have finding info and parts on my bike. ok so i have a 82 gs650e quad mikuni carbs. it was running great last season i put it up in my shop for the winter and recently went out to try to get it ready to ride again. ok so i pulled the carbs rebuilt them again new plugs ect well its running great with the exception of one minor issue....... as soon as it starts it revs to about half throttle and stays there (about 5500) any clue guys? mixture? something really stupid? i checked the throttle linkage and couldnt see any problems however the throttle itself does feel a bit different. any help would be greatly appreciated. and thanks again for the forums there a godsend.

 

[Guest]

Did you try and adjust the idle with the idle adjusting knob?

 

[BassCliff]

Hee Haw Howdy!

Hee Haw Howdy!

Hi Mr. dustysnakes,

A couple more suggestions: make sure your throttle cable is adjusted properly and check again for air leaks in the intake system (intake boots, O-rings, airbox boots, etc). Is the airbox properly sealed? Here's your mega-welcome with a little bit more information.

Dear fellow GS rider,

Let it be known that on this day you are cordially and formally welcomed to the GSR Forum as a Junior Member in good standing with all the rights and privileges thereof. Further let it be known that your good standing can be improved with pictures (not you, your bike)![FONT=Arial, sans-serif] [/FONT]

Perhaps you've already seen these, but I like to remind all the new members. In addition to the carb rebuild series, I recommend visiting the In The Garage section via the GSR Homepage and check out the Stator Papers. There's also a lot of great information in the Old Q&A section. I have some documentation on my little BikeCliff website to help get you familiar with doing routine maintenance tasks (note that it is 850G-specific but many tasks are common to all GS bikes). Other "user contributed" informational sites include those of Mr. bwringer, Mr. tfb and Mr. robertbarr. And if your bike uses shims for valve adjustments, send an email to Mr. Steve requesting a copy of his Excel spreadsheet that helps you keep track of clearances, shim sizes and other service work.

These are some edited quotes from one of our dear beloved gurus, Mr. bwringer, with ideas on basic needs (depending on initial condition), parts, and accessories.
***********Quoted from Mr. bwringer************
Carburetor maintenance:

Replace the intake boot o-rings, and possibly the intake boots. Here's the procedure:
http://bwringer.com/gs/intakeorings.html
Here's an overview of what happens with this particular problem:
http://cycleorings.com/intake.html
You'll also want to examine the boots between the carbs and the airbox. There's a good chance these are OK, but check them over.
And finally, if things still aren't exactly right, you'll want to order a set of o-rings for BS carbs from the GS owner's best friend, Robert Barr:
http://cycleorings.com
Once you receive these rare rings of delight, then you'll want to thoroughly clean and rebuild your carburetors. Here are step-by-step instructions that make this simple:
http://thegsresources.com/gs_carbrebuild.htm
***********************************
Every GS850 has (or had) a set of well-known issues that MUST be addressed before you have a solid baseline for further troubleshooting. It's a vintage bike, and it's quite common (as in, every single GS850 I have had contact with) that there are multiple problems that have crept up and slowly gotten worse over the years. It's not like a newer vehicle, where there's generally one problem at a time.

These common issues are:

1. Intake O-rings (install NEW OEM or Viton only - common nitrile O-rings will quickly deteriorate from heat)
2. Intake Boots (install NEW -- these cannot be repaired)
3. Valve clearances (more important than most people think)
4. Carb/airbox boots
5. Airbox sealing
6. Air filter sealing
7. Petcock (install a NEW one)
8. On '79 models, install new points or Dyna electronic ignition (or at least verify that the old points are working correctly)
9. On all models, it's fairly common to have problems with the spark plug caps. These are $3 or $4 each, and often worth replacing if you're keeping the stock coils/wires.
10. Stock exhaust with NO leaks or holes -- good seals at the head and at the junctions underneath.
***************************************
OEM Parts/Online Fiches:

I would definitely double and triple the recommendations to use Cycle Recycle II and Z1 Enterprises as much as possible. These guys are priceless resources. Z1 tends to have slightly better prices, CRC2 has a wider range of goodies available. If you're near Indy and can bring in an old part to match, CRC2 has a vast inventory of used parts.
http://denniskirk.com - Put in your bike model and see what they have.
http://oldbikebarn.com - seems to be slowly regaining a decent reputation, but it's still caveat emptor. They don't have anything you can't get elsewhere at a better price anyway.
http://www.babbittsonline.com/ - Decent parts prices. Spendy shipping. Don't give you part numbers at all. Useful cross-reference if you obtain a part number elsewhere. Efficient service.
http://bikebandit.com - Fastest. Middlin' prices. Uses their own parts numbering system to obfuscate price comparisons -- can be very confusing for large orders. Cheapest shipping, so total cost usually isn't too bad.
http://flatoutmotorcycles.com - Slow. Cheapest parts prices, crazy shipping costs. Don't expect progress updates or much communication. Real Suzuki part numbers.
http://alpha-sports.com - Exorbitant parts prices. Different type of fiche interface that's quite useful at times, especially with superceded part numbers. Real parts numbers. Shipping cost and speed unknown due to insane, unholy pricing.

Stainless Bolts, Viton o-rings, metric taps, dies, assorted hard-to-find supplies and materials, etc:

http://mcmaster.com - Fast, cheap shipping, good prices. No order minimum, but many items like bolts come in packs of 25 or 50. Excellent resource.
http://motorcycleseatcovers.com - Great quality, perfect fit (on original seat foam), and available for pretty much every bike ever made. Avoid the textured vinyl -- it's perforated.
http://newenough.com - You DO have riding gear, don't you? Great clearances, always outstanding prices and impeccable service.
***************End Quote**********************
Additional parts/info links:

GSR Forum member Mr. duaneage has great used upgraded Honda regulator/rectifiers for our bikes. Send him a PM.
New electrical parts:
http://stores.ebay.com/RMSTATOR or http://www.rmstator.com/
http://www.ricksmotorsportelectrics.com/index.php
http://www.electrosport.com/
For valve cover and breather cover gaskets, I recommend Real Gaskets (reusable silicon):
http://www.realgaskets.com
The Rice Paddy (salvage/used)
http://www.ricepaddymotorcycles.com
Carolina Cycle
http://www.carolinacycle.com
Ron Ayers Motorsports
http://www.ronayers.com
MR Cycles
http://www.mrcycles.com
Moto Grid
http://www.motogrid.com
If all else fails, try this:
http://www.used-motorcycle-parts.org/
Used bike buying checklists:
http://www.amadirectlink.com/roadride/Riderresc/checklist.asp
http://www.clarity.net/~adam/buying-bike.html
Lots of good info/pictures here:
http://www.suzukicycles.org
http://www.cyclechaos.com/wiki/Motorcycle_Wiki

Thanks for joining us. Keep us informed of your progress. There's lots of good folk with good experience here.

Thank you for your indulgence,

BassCliff
(The unofficial GSR greeter)

 

[northwoods]

Does the throttle come down on it's own or do you have to jack with the throttle on the grip to get it to idle down? If it comes down on it's own you may have some gas getting into your engine while it's sitting and it's just burning it off.

 

[dustysnakes]

yeah i tryed the idle adjust backed it all the way down as low as it got was about 5k as far as does it go down by itself? it doesnt go down at all you can give it throttle and it goes up but not down. and btw it currently has no airbox on it straight open carbs previous owner thought it smart to cut the box in half

 

[BassCliff]

Got air?

Got air?

...it currently has no airbox on it straight open carbs...

I think you have found your problem Mr. dustysnakes.


Thank you for your indulgence,

BassCliff

 

[dustysnakes]

really? had no idea (past harley rider) anyone know where i could get one of those things or would it be better to put pods on it

 

[BassCliff]

really? had no idea (past harley rider) anyone know where i could get one of those things or would it be better to put pods on it

Being the old fuddy-duddy that I am, I like stock. But lots of guys use pods and then rejet as necessary. Just to get it running, you can try putting a shop towel across the carb intakes and holding it in place with a big zip tie. You won't be able to tune it very well, but at least a little air restriction should let it run a little better. These GS bikes are pretty particular about air intake leaks, and you have a huge one. :-D

Where can you get an airbox? Local bike wrecker, online bike wrecker, ebay, this forum's "parts wanted" or "parts for sale" sections come to mind. I'm pretty sure you can't buy a new airbox any more. Hit my website and check the "Greeting-Info-Vendors" page for a partial list of vendors.

Thank you for your indulgence,

BassCliff

 

[dustysnakes]

many thanks man that would have driven me even more nuts than i already am i had no clue that they were that particular about the amount of air they were getting i always thought more air=better but i suppose im wrong ill play with it more tomorow and update as its currently midnight here and i dont think my neighbors would be terribly pleased with firing that thing off with no mufflers (probably another issue there too now that i know how funny they are about intake i can only imagine there equally as finaky about exaust as well. thanks again

 

[dustysnakes]

this site rocks harder than motley crue playing in the ande's

this site rocks harder than motley crue playing in the ande's

hey man thanks so much went out this morning tried that nifty trick with some seat fabric i had left over from an upholstry job and 4 radiator clamps turned the pet cock to pri hit the choke pressed the starter. the bike turned over three times busted off and ran like a flipping sewing machine. i never would have figured that one out myself thanks again. i just put in an order for a set of k&n pods to replace the cheap foam ones i got from auto zone today. i did a bit of mixture and idle tuning and rode for about 3 hours today. i love this site!!!

 

[Nessism]

You are going to have to rejet the carbs to work with the pods since they flow more air than stock. Dynojet sells what they call a stage 1 kit which is a convenient way to go.

Good luck.

 

[dustysnakes]

yeah someone else mentioned that like it is i had to richen it up as much as possible with the mixture screws but i can tell that its still running a bit on the lean side. im reallllllllyy new to these particular carbs could you by chance tell me what size those jets are. and ive also seen a stage 2 jet kit would that work equally as well and mabey squeeze a couple more ponys out of it? keep in mind also that the pipes were cut off to 4 open headers currently welding up a 4 in to 1 with an internal baffel

 

[catbed]

my lord that thing is a LEAN machine.

 

[dustysnakes]

very lean at the moment not so mean though at least not to anyone but me. this is my first multi carb setup let alone a vaccume set up. so this is all new to me i may be still doing it wrong. having to kind of learn as i go on this one but then again i did the same thing building drag car motors too and now ive got a 8.3 second nova. so im sure eventually with the proper guidance (thanks guys) ill get it screamin

 

[BassCliff]

Hi Mr. dustysnakes,

You'll find a carb spec sticky at the top of the Tech section. That's where I found these numbers for the 650E.

Thank you for your indulgence,

BassCliff