1983 Suzuki GS450GA Automatic. This bike is doing exactly what the poster's bike in the link below was doing:
http://forums.sohc4.net/index.php?topic=30839.0
This is NOT a typical carb problem. We work on motorcycle carbs every day and have for years. I joined the SOHC4 site but a search didn't locate the thread. HELP!! :oops:
If you need to post pics - post pics, don't direct it to another forum, and then to another and still have no pics.
Cool.
Buddha.
Huh? Pictures? Not needed in this case. All you have to do is read the text. It's very straightforward (unlike the solution to this problem).
Anybody else?
That description is too complicated. Do the blow test for the carbs. You blow into the inlet as you start tipping them. If it stops your lungs that is what it will need to stop the gas.
I suspect your float is hitting something, or a float is sinking. Oooo see if the floats actually ... um float. I have had a metal float once spring a leak and sink.
Cool.
Buddha.
@Buddha, were they Titanic™ branded floats by any chance?
@Ron, post your images here https://postimages.org it's free and easy no need to sign up.
Like I said, this NOT a typical problem. EVERYTHING "normal" has been ruled out. No problems with the floats, float needles and seats have been replaced, etc., etc. This is something specific to these weird GA carbs. Been working on carburetors for 40 years or so. And no, I'm not senile (yet)! :icon_lol:
Ron
Barely Legal Bikes
If that model had push in float needles replace the O rings around the needle housing if you haven't already done it. They will NOT look like there is anything wrong with them but they will have shrunk. It is a problem with Suzuki's across models with the CV carbs and push in needle housings.
I also put a little fuel resistant ( LITTLE!!!) gasket liquid on the O rings when you put them back. ( Did I say a LITTLE). Make sure you clean any gasket stuff up anywhere else.
I am not saying that a crankcase full of fuel on a Suzuki is because of leaking float needle Orings. But it is very very likely. Both my current GS500 AND a previous DRZ400sm had this problem.
ALL of that (and more) has been done. This is a truly weird problem, I think there might be a strange venting issue going on. With the carbs on the bench (hooked up to a remote fuel supply), the gas instantly starts coming out of the top of the needle jet (into the venturi) and out of the the right side air bleed (not the one with the screwed in air jet on the left). But the bowl itself has almost no fuel in it at that point; it isn't overflowing in the normal sense. And when you take the bowl off and hold the float up nothing leaks from anywhere. :mad: :mad:
Silly question maybe but you didn't connect the fuel inlet hose to one of the carby breathers did you.
Quote from: oilheadron on February 27, 2018, 04:17:09 PM
ALL of that (and more) has been done. This is a truly weird problem, I think there might be a strange venting issue going on. With the carbs on the bench (hooked up to a remote fuel supply), the gas instantly starts coming out of the top of the needle jet (into the venturi) and out of the the right side air bleed (not the one with the screwed in air jet on the left). But the bowl itself has almost no fuel in it at that point; it isn't overflowing in the normal sense. And when you take the bowl off and hold the float up nothing leaks from anywhere. :mad: :mad:
Someone poked out one of those blind plugs drilled into the castings ??? Did some genius attempt to remove or clean one of those air jets in the filter mouth with a drill ???
Cool.
Buddha.
Buddha, that thought occurred to us as well but so far we haven't seen anything amiss. It was doing this when we bought it so we're innocent (this time!). I've been trying to find another carb body but they're thin on the ground and quite expensive. Believe it or not we just so happen to have another 450GA in the shop with good carbs so we're going to pull them off and see if anything looks obviously different.
P.S. The 450GA with the good carbs just achieved legally abandoned status a couple of days ago. Hehehehehe :)
Thanks,
Ron