SuzukiSavage.com - Print Page

SuzukiSavage.com
/cgi-bin/YaBB.pl
General Category >> Rubber Side Down! >> Gas pouring from air vent
/cgi-bin/YaBB.pl?num=1588448053

Message started by Fabricio Bino on 05/02/20 at 12:34:13

Title: Gas pouring from air vent
Post by Fabricio Bino on 05/02/20 at 12:34:13

Hello!
Some days ago i bought a used mikuni vm38 from the internet and asked my mechanical to install it. Okay, everything fine until the day i stopped the bike for a few minutes and found out it was leaking gas from the air vent.

My theory is that somehow the float is getting stuck on the bowl, I am not sure if the float is actually the correct one for this model.

Do you guys have any ideas?

Thanks in advance!

Title: Re: Gas pouring from air vent
Post by justin_o_guy2 on 05/02/20 at 14:24:16

Stuck? Maybe,, Try giving the carb a whack whith a screwdriver handle,,
Or, the float valve had junk in it,,

Title: Re: Gas pouring from air vent
Post by Gary_in_NJ on 05/02/20 at 14:34:46

Or the o-ring at the needle valve is dry/cracked/shrunk.

Title: Re: Gas pouring from air vent
Post by sawkuh on 05/02/20 at 20:33:33

Had the same issue with mine this spring when I got mine out. opned the carb, sprayed the float and jet with a bunch of carb cleaner and just didled the float a few times to work it in. Worked like a charm

Title: Re: Gas pouring from air vent
Post by Gary_in_NJ on 05/03/20 at 04:12:33

7C6E78647A670F0 wrote:
just didled the float a few times to work it in. Worked like a charm

There will be no didiling of the float on this forum.

Title: Re: Gas pouring from air vent
Post by batman on 05/03/20 at 06:50:58

You should check the float level is correct if your diddling as you might have changed it playing around.

Title: Re: Gas pouring from air vent
Post by Fabricio Bino on 05/03/20 at 11:07:15

Thank you all for your replies!
I'll open up the bowl and inspect the o-ring. I'll also measure the float size because I'm not sure if the last owner replaced it with a float from another carb, if you guys have the measurements of the float, It will be useful!!

Title: Re: Gas pouring from air vent
Post by Gary_in_NJ on 05/03/20 at 11:43:37

Well there’s some missing information. Yes, the wrong float could certainly cause the leaking.

Title: Re: Gas pouring from air vent
Post by sawkuh on 05/03/20 at 11:48:13

7370657C707F2529110 wrote:

You should check the float level is correct if your diddling as you might have changed it playing around.

Yeah if were being honest I have the hardest time believing that just lifting the float with your finger 2-3 times means you risk messing the float level.

Title: Re: Gas pouring from air vent
Post by batman on 05/03/20 at 21:29:53

To be honest, he had his mechanic install the carb so we don't know if the float level was ever checked, if all he does is spray it like you advised it could still flood . If you're already there why do a half fast job. He said it was a used carb do we know the mechanic cleaned it?

Title: Re: Gas pouring from air vent
Post by DragBikeMike on 05/04/20 at 01:05:50

Fabricio, it would be most helpful if you could remove the carburetor, remove the float bowl, and take a bunch of pictures. Post pictures of the internals and identify the vent where you see the fuel running out.

Title: Re: Gas pouring from air vent
Post by sawkuh on 05/04/20 at 08:08:06

383B2E373B346E625A0 wrote:

You should check the float level is correct if your diddling as you might have changed it playing around. =/= his mechanic install the carb so we don't know if the float level was ever checked...do we know the mechanic cleaned it?

its 4 screws my guy. I would much rather take off 4 screws and clean it, as you helpfully suggested, and check if that was an issue over removing the carb. I dont think trouble shooting the common issues is "half fasting" it

Title: Re: Gas pouring from air vent
Post by batman on 05/04/20 at 10:49:24

Sawkuh , so you sprayed your carb and got lucky, that's hardly the same situation Fabricio faces with his used carb and therefore poor advise.

Title: Re: Gas pouring from air vent
Post by Fabricio Bino on 05/04/20 at 13:54:40

191F106C6E696D5D0 wrote:

Will do! I believe this Thursday I`ll be able to to it, thank you very much for your reply!