Hi all - I haven't updated on this for a while.  It's been 6 weeks since i ordered a pair of carb rebuild kits (see above), but they are MIA.  (ETA was 15-20 days.)

I know it's a noob question,  but can anyone point me to a source for the proper o-rings to rebuild
(a) a pair of BST33 carbs (89-90);
(b) a pair of the 3 jet carbs for later models.
I have both sets of carbs, and as winter is setting in to northern Alberta, rebuilding both sets of carbs and getting the GS running would be a nice start to the winter project.  Thanks in advance.

@Sledge,

The inter webs automatically come with a Caveat Emptor.


What I've always wanted to know is when starting with the choke, why it takes a couple of seconds before the rpm rises.

Quote from: user11235813 on October 20, 2018, 06:51:15 PM
What I've always wanted to know is when starting with the choke, why it takes a couple of seconds before the rpm rises.

I have also wondered this... 

Quote from: qcbaker on October 22, 2018, 05:28:29 AM

Quote from: user11235813 on October 20, 2018, 06:51:15 PM
What I've always wanted to know is when starting with the choke, why it takes a couple of seconds before the rpm rises.

I have also wondered this... 

I'd have to guess it is because it takes a second for the fuel to refill the bowls since starting with the petcock closed.

Quote from: mr72 on October 22, 2018, 06:58:19 AM
I'd have to guess it is because it takes a second for the fuel to refill the bowls since starting with the petcock closed.

That's possible, but I'm pretty sure it does the same thing even if I put the bike in PRI and let the bowls fill first. I'll have to check next time I ride lol.

interesting. I have never tried it starting on PRI.

Actually on my GS I sometimes have to bump the throttle to get things going when its cold. Then it tends to rev right up. It always seemed to me that the longer it had set, the worse it was, so I figured it was fuel depleted in the lines and bowls. But that's just a guess!

Quote from: mr72 on October 22, 2018, 11:55:53 AM
interesting. I have never tried it starting on PRI.

Actually on my GS I sometimes have to bump the throttle to get things going when its cold. Then it tends to rev right up. It always seemed to me that the longer it had set, the worse it was, so I figured it was fuel depleted in the lines and bowls. But that's just a guess!

I was gonna post about this earlier but completely forgot. I rode my GS to work today and I put it in PRI for a little before starting it, and the revs climbed to normal "choke on" levels much quicker. So, I think you're probably correct (or at least partially correct) about why the RPMs lag on cold start.

The problem on your bike seems alike the one I have on my 17 y/o GS with 40+Kmiles, just for peace of mind, check sparks color, I found mine orangish before the plugs stopped sparking. For what I have reserched, on my bike the weak sparks won't fire up the fuel once there is much more than enough to idle. You don't even need carbs attached to test the plugs. Good luck.