Carb question

adunston · October 02, 2005, 06:11:14 PM

I was wondering, in all the rejetting tutorials I have read, they make sure to tell you to NOT lose the small rubber O-ring when taking off the tops of the carbs. What happens if you do lose one? Does it really make that big of a difference in performance?

JetSwing · October 02, 2005, 06:15:48 PM

why do you ask? are you planning to lose it? :mrgreen:

Alphamazing · October 02, 2005, 06:17:58 PM

That gasket seals the float bowl. It won't NOT work, but it will leak like crazy. Don't lose it.

adunston · October 02, 2005, 06:20:01 PM

All right, all right. I conceed. It's gone. Lost forever. Haven't ridden the bike since I saw that I lost it. What should I do? Where can I get another one?

JetSwing · October 02, 2005, 06:23:41 PM

you though you were going to fool us?

JetSwing · October 02, 2005, 06:24:45 PM

you should be able to find it at local hardware store...? you just need to figure out the size

Alphamazing · October 02, 2005, 06:28:42 PM

Ohhhh, okay, I was confused. That small rubber o-ring... I don't think it does anything, honestly. I thought you were talking about the gaskets on the float bowls. That o-ring though... honestly, I don't think it does a damn thing. You should be fine. If you can figure out the size though and want to take the time to pull your carbs and open them up again, feel free! :lol:

JetSwing · October 02, 2005, 06:32:43 PM

you think it's there for no reason?

Alphamazing · October 02, 2005, 06:35:16 PM

Well, I'm not sure it is a serious issue. There are guys on the FZ1 board my father frequents who have lost that little o-ring and haven't noticed anything wrong with it. Just my opinion. Maybe Srinath will come in here and correct me.

adunston · October 03, 2005, 02:53:00 PM

Ok, I got a new rubber gasket from my mechanic today and installed it. Cranked up the bike and she ran just fine. This is the first time it's been run since I had my mechanic fix some major ground electrical work a few months ago. The bike ran great.....except.....every few seconds it sounded as if someone were shooting a cap gun inside my muffler. What in holy hell could that be? The can was drilled out, but that was before I go the bike. I drove the bike around in the neighborhood and it sounded like it was backfiring when decellerating, especially when going down a hill. Just to see, I put the bike in neutral and cranked the throttle to about 9000 rpm and let it drop back down on it's own. It still make a really loud "pop" as it came back to idle. Any guesses?

callmelenny · October 03, 2005, 03:09:12 PM

Nothing new under the sun....

http://www.gstwins.com/forum/viewtopic.php?t=12335&highlight=lean+backfire

Rema1000 · October 03, 2005, 09:31:08 PM

That tiny o-ring holds the vacuum in... or rather, holds the air out

. Without it, you'll have a vacuum leak in one card, causing it to run lean.

Not that replacing the missing o-ring will necessarily fix your backfiring problem, but if you haven't already, you really should get a tiny o-ring at the hardware store.

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Carb question