The vacuum line is blocked by the petcock, which is a shutoff valve.

You can tell whether it's working by sucking on it with the fuel line disconnected. If fuel comes out while you suck and then trickles to a stop, it's working.

I blew air on the fuel line with my mouth. Not clogged I hear the bubbles in the tank. But this one is clogged. Can't blow air in it or suck air on it. So Idk if the peacock thing under the tank is clogged or its supposed to work like that ( I doubt it)

My fuel line trickes drops until it stops

There is a small screw under the bowl of the carburator. It's the drain for the bowl. If all hoses are hooked up; you need to backout the drain screw a little. If gas is coming out, than you are getting gas at the carb.
Have your tried unplugging the autochoke? Don't remove it, just unclip the wire.

Nick,
Why is it that you always get the questions that involve sucking and blowing in hoses?

Because nobody asks about petcunts.

Because he is the forum expert.

Well, yodeling into the fuel line wouldn't work.

ok here is the first issue i see you took your autochoke/enrichment circut off


did you replace the oring for the autochoke when you took it off

there are reasons why we say dont take it off getting it back on properly is one and fornicate up that oring is the other the other

if its not seated properly it wont run right and lord forbid you get a tiny spec of dirt in or bit of oring fall off when you put it back on you will plug it up

that hose you are asking about has nothing to do with the autochoke oyu need to use a hose and plow into ports insids the carb to test the autochoke

Yes the o-ring is there. You're right, hard to sit but is there. Clean.
Is that line a vacuum line that sucks air from the carb or tank?
What's the matter w the auto choke and it running if I unplug the autochoke still the bike won't run properly?

i didnt ask if the oring was there i asked if you replaced it

meaning did you get a brand new oring and put it in

you know if you unplug the autochoke you are leaving it with the choke on always right

it needs a source of ele going to it to shut the choke off as its not realy a choke but an enrichment circut it adds extra fuel

if you are getting fuel to the carb you have a vacume leake some where on your scooter

remember with a 2 stroke even a leak in your crank seal will cause your scooter to not run right

maybe its time to try a leak down test

and like i have already said your autchoke is clocked wrong it should be covering that tit on the carb by the hose you highlighted in yellow

Good advice. I was wondering why you think it's a vacuum leak w/o knowing the compression?













i

Didnt change the oring, sorry for the misunderstanding
Carefully put it back and covered that tit, that pic it was googled for didactic purposes
Mine is covered and seems like it doesnt make a difference

I need to know what the yellow line does

It's the vacuum line. That's what draws fuel into the carb; sucking on it creates a vacuum, and it should cause fuel to come out the fuel line and (assuming the petcock is working properly) stop when you stop sucking.

You really should download the service manual - there's a drawing of a guy doing this exact test.

Great
That's one thing I never understood.
Are you talking about the service manual here?
Thanks Nick

Yeah, it's on this site.

Go to the home page and look for the drop-down menu at the upper left.