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Bike is shop bound.....

  • Thread starter Thread starter kdupont
  • Start date Start date
K

kdupont

Guest
After fiddling with this bike for well over a week I have realized that I have no idea what Im doing!!!:oops: So she is in the shop now, Id rather just have it running rather than have the satisfaction of fixing it myself. I fear that further fiddling could cause worse problems.

As of today I have it running, but I cant exceed 3500 RPM at any point. I can shift through all the gears and Im no longer leaking fuel.

Id like to know what everyones thoughts are as to whats wrong with my beloved bike??
 
Im hoping that when it comes back that nothing is wrong with it!!!!!

Now Im gonna worry about these mean mechanic men touching my Lucille!!! (Yes......I named my bike...)
 
kdupont said:
Im hoping that when it comes back that nothing is wrong with it!!!!!
Click to expand...

Well there's a first time for everything. You have the air box on good and tight? No air leaks? Carbs cleaned/ DIPPED/adjusted and new O rings?
 
Carbs cleaned yes. I don't have an air box, cant seem to find one either. And Id rather not run pods.
 
It won't run right without the air box. About like you describe. Starts and idles, won't rev up much. An airbox is probably all you need. Unless the shop "fixes" it. Then you'll need a new bike.

I happen to have a nice 850 air box for sale.
 
Could it really be that simple??? How much are you asking for your airbox?
 
That's about the max im getting....So maybe I should hold off on the shop until I try running an airbox on it.

Can anyone explain to me why the airbox would make such a major difference??
 
Lol did we say get a camera??? Best this is takes lots of pictures and videos. Virtual mechanic.
 
A little bit of a pressure differential is needed for the carb to meter fuel, it's very sensitive on the CV carbs. They have an elevation compensation function tht depends entirely on intake pressure differential. With no resistance to airflow coming in, there is no pressure differential, it doesn't know how much fuel to suck in.

Or something like that.
 
I just found one of your other mystery threads. The bike had pods that you now pulled off and want to go straight to an airboxboots???? I suggest pulling the carbs and checking the jetting then if a dynojet put the pods back on and see how it runs till you can go back to ll stock. Intake has a dramatic effect on jetting
 
Since Ive had the bike its never had any sort of intake apparatus on the carbs, no pods, no airbox. The p.o said he has pods but has yet to produce them for me. The current jets that are in it are 112.5 on the mains.
 
tkent02 said:
Unless the shop "fixes" it. Then you'll need a new bike.
Click to expand...

Kent is a bit of a drama queen but yeah, the shop is usually a risky way to go if you really want things done right, especially with an old GS. And I'm sure it's not unheard of for a shop to brick a bike... If you can do all the things you've done so far to the bike then talking to the fine folks here and a good helping of patience will get you where you need to be. It cannot fail to be so.
 
Sorry guys, my mistake on the whole pods issue....NO PODS ON MY BIKE!!!!!!!!

Ill postpone the trip to the shop for now. The shop I was gonna go to is called Don and Sons cycles, supposedly the only shop in my area that works on old metric bikes.
 
kdupont said:
Sorry guys, my mistake on the whole pods issue....NO PODS ON MY BIKE!!!!!!!!

Ill postpone the trip to the shop for now. The shop I was gonna go to is called Don and Sons cycles, supposedly the only shop in my area that works on old metric bikes.
Click to expand...

If your jetting is stock then get the box from tkent but order some new manifold rubbers between the airbox and carbs. Believe me it is worth it, definitely
 
As youll see when you get the proper air box, the rubber boots are molded with velocity stacks that fit inside the airbox. Onn CV carbs youll notice a kidney bean shaped port at the very top. This duct leads to below the diaphrams and as air rushes into the carbs some is diverted to the diaphrams. This air pressure raises and lowers the slides relevent to the speed ( volume )of the air being sucked in by the cylinders.

So what everyone is trying to say is that without the stacks, the air velocity can only reach so much...which is at about 3000 to 3500 when they start to fail due to lack of intake air velocity...follow us here???
 
Gotcha.... Alright well tkent has a different model airbox tan what I need so Im going to a salvage yard to find one. I found a box on ebay but it didn't have the boots, and boots on ebay are 75 bucks for all 4.
 
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