Starting Problems

[SychoSly]

So it just snowed here yesterday and we almost have a foot of snow. I tried to start the scooter and it is not cooperating.

I kick start it and it doesn't want to budge. I spray it with some starter fluid and then it fires up and dies all in like 5 seconds.

We then went to check the fuel lines and vaccum lines. I am not sure if they are working properly. Or if the carb is not creating a vacuum to suck the gas. My dad said that it's not getting gas. When we took the lines off and blew into the vacuum fuel came out of the fuel line.

I sucked into the vacuum and then when the gas started flowing again i reconnected the fuel line and we tried starting it up. I started up and was running for like 3 minutes if that.

Anyone know what can possibly be the problem. The scooter has been sitting in a non-heated garage so its coooooold. Could that be it. Should I wait until its warmer outside and then start it up?

I also have no filter right now, as I am going to be running an open carb and the carb has not been rejetted. I don't think that would cause the bike not to start.

Thanks for any help.

[SychoSly]

We took off the gas tank and dissassembled the part where the hoses hook up. It started up again and then it died after like 5 minutes.

Maybe the fuel went bad.

I will keep trying things.

[shayandaman]

maybe its your automatic fuel shut off valve, because one time my vento was turning off after couple minutes too, but then i took off the shut off valve and it worked fine.

[shayandaman]

Also, if you are running stock setup withough jetting the carb and without an airbox, your scooter will bog out and not turn on.

[SychoSly]

Also, if you are running stock setup withough jetting the carb and without an airbox, your scooter will bog out and not turn on.


I had the stock setup witt he tecnigas pipe and open carb. Scooter ran but it was lean. Never had a problem starting it.

Everything on the motor is upgraded. I believe it is getting fuel. I check it tommorow.

[zuma2003]

Dont run the bike lean it will siez the topend. I would get an aftermarket carb or rejet asap. Also you shoud never use starting fluid It washes the oil from the piston.(Its like running your bike with out oil for a few sec.) that stuff is bad. Use wd 40 it wont hurt the motor. As far as your stalling problem I would remove the carb and clean the float bowl, jets and needle valve. Good luck!

[SychoSly]

Dont run the bike lean it will siez the topend. I would get an aftermarket carb or rejet asap. Also you shoud never use starting fluid It washes the oil from the piston.(Its like running your bike with out oil for a few sec.) that stuff is bad. Use wd 40 it wont hurt the motor. As far as your stalling problem I would remove the carb and clean the float bowl, jets and needle valve. Good luck!


I will use WD40 tommorow to see if it starts up again once I drain the fuel and add some new fuel.

[cant drive 55]

When I had a stage 1 my engine ran a little lean too. I just went to a motorcycle shop and got a #74 main jet and put that in. Now it runs perfectly. Try that and it should fix your problem.

[SychoSly]

Well I have a 24MM carb and the store where I bought it from doesn't know the exact size of the stock jet. He thinks it is 118. So I am going to have to go to 122.

[hybridrazz]

Sly you still have the stock choke right? I would go to a primer that's what im using with no probs starting in negitive temps. Also keep a new spark plug, every time i had a starting prob with the primer it was the spark plug.

[SychoSly]

I believe I am using the stock choke. I don't even know what it looks like. On the new carb there is this plunger thing, not really sure what it does/is.

I have a feeling it is the fuel. I think I am going to rejet, because it feels as if it's not getting enough fuel.

[XPS1210]

now you got me worried...

your choke if manual has a plunger and a pull cable... So if it has that it's manual, if it's an auto-choke... then there were wires you had to hook up to the stock wiring...

if there is neither, then your choke is not hooked up which would explain why your scooter isn't working in the cold...

take a pic and post it... that's the easiest way for us to tell for sure...

[rydah]

Well I have a 24MM carb and the store where I bought it from doesn't know the exact size of the stock jet. He thinks it is 118. So I am going to have to go to 122.
sly i have a 120 in my oko 24mm and the needle cliip is in the middle.

[SychoSly]

Well I have the 24MM oko carb. Hopefully you guys saw teh pictures of it in the other thread. Otherwise they are still there so you can check it out.

Through the top I have the trhrottle cable going in. THenteh big brass nipple thing is the fuel line, and the one next to it is the vacuum line. That is how I have it hooked up. Then on the bottom there is another like nipple thing but I think it is a drain.

If you look at the pictures the black plunger thing stays down, and then if I pull it up it stays up. There really is no adjustment on it. It is either down or up.

What is the needle clip and where is it?

I am going to upjet and see if it runs for more then 2-3 minutes.

[XPS1210]

the needle clip is connected to the throttle needle and should be where the cable connects to the carb... there should be a plate that clips to the needle and there should be several adjustments on the needle...

[str8dum]

that black plunger thing is the manual choke. Pull it up and try to start. Once the bike is running you have to push it down. I'm actually amazed that no one pointed out that the plunger is teh choke and most liekly the key to your problem.


Also, put a lil gas into the cylinder with a straw or an eye dropper. Then try to start. That always gets my bike goin when it wont start.

Well I have the 24MM oko carb. Hopefully you guys saw teh pictures of it in the other thread. Otherwise they are still there so you can check it out.

Through the top I have the trhrottle cable going in. THenteh big brass nipple thing is the fuel line, and the one next to it is the vacuum line. That is how I have it hooked up. Then on the bottom there is another like nipple thing but I think it is a drain.

If you look at the pictures the black plunger thing stays down, and then if I pull it up it stays up. There really is no adjustment on it. It is either down or up.

What is the needle clip and where is it?

I am going to upjet and see if it runs for more then 2-3 minutes.

[Lennox]

Look at post #'s 12+13 (http://www.provoscooter.com/vbull/showthread.php?t=1310&highlight=plunger)

[SychoSly]

Looks like the carb is coming off tommorow. :( . I have to up jet and see where that adjustment is.

[str8dum]

No need to be rude and yell Lennox. I missed the post where Jered explained what the choke looked like. I also missed in that post on how to use the choke which was the most important part. Apparantly the orig poster might still be misguided by wanting to upjet becuase the needle and the main jet have nothing to do with idle.
Here's a lil refresher ***EDITED click the link BTW: it's against the TOS to post external links to sites as you did please refrain from this in the furture! EDITED***

Here's another jetting page that is most useful.
Just because it stalls doesnt mean it doesnt have enough gas. Bogging is usually a sign of to rich a conditon. Jetting needs to be done systematically and not just randomly if you want to get it right.


Look at post #'s 12+13 (http://www.provoscooter.com/vbull/showthread.php?t=1310&highlight=plunger)

[SychoSly]

I only saw one of the links to the sites. But the one site I did see does not sell anything. It just tells you how a carb works and how to tune it. What is wrong with having a link to that site.

Reading the TOS it says not to post to sites that sell parts. That is just an informational site about carbs.

I unno?

[Lennox]

I was not yelling...... if I was, it woulda been all caps!

I am sorry that my cyber-space etiquite is not always the best.... :o

[XPS1210]

BTW... I edited the links out... The reason why... They were to other forusm right?

I do believe this is against the TOS... If I'm incorrect sorry and repost... I'll re-read them and make another call if needed...

[SychoSly]

Here are the links:

http://www.smellofdeath.com/lloydy/jetting.htm


and


http://204.71.0.3/motoprof/moto/mcycle/carb101/carb101.html

The first site is all about lambrettas. The second site only that page works.

[XPS1210]

my bad... sorry for deleting them... I got a little jumpy... oops...

These links have good info...