Have a Gio 49cc F1 bike. Ran good for about 20 mins, then it died. I would start but when you give it gas it would die. It now won't start.
I've cleaned the carb out already, there is spark. Here's what i noticed. It will idle for about 5 seconds if I pull the gas line off the carb and then put it back on. I pulled the bottom float bowl drain screw with the gas petcock on and gas ran out then stopped. Should it now keep flowing out if the gas is on? I'm thinking I have an air lock or something preventing it from getting gas. Any ideas?
thanks all!!
Dude, for a first-time post, that was really informative! Why can't all the newbies post like this????????
(Btw, welcome to the forums...)
Sounds like maybe your filter or your fuel line is clogged. Also (have to ask), are you flipping the choke down when you want to ride, or leaving it up? Leaving it up is not good - that's full choke, used only for starting.
Usually when you hit the throtttle and it dies, you're either a) getting too MUCH gas, or b) not getting ENOUGH gas. What you can try is moving the c-clip on your throttle needle up/down a notch to richen/lean out the gas/air mix.
Thanks for the reply, I've done alot of reading. The choke was down when it ran good. I was going to try the c-clip thing, but i couldn't figure out how to take that assembly apart.
That's easy. Unscrew the top cap - where your throttle cable goes into the carburetor and very carefully pull it out. From top to bottom, you'll have this:
Cable
Cable adjuster (the brass thing on top of the cap)
Top cap
Throttle return spring
Throttle slide (the cylinder)
Inside the cylinder is the following:
Half-moon clip
C-clip
Needle
I suggest taking a picture of the assembly before you start for reference on how to put it back together. Once you've done it a few times, you'll be able to put it back together, no sweat. Be VERY careful NOT to lose the c-clip - it is EXTREMELY important! I suggest doing this on a shallow pan with paper towels across the bottom so parts don't go rolling off your workbench.
Once you have moved the clip and are putting everything back together, the long groove on the throttle slide faces the petcock, and the small cutout section at the bottom of the slide faces the idle screw. (If by chance you put it in the other way, the top cap will be very hard to screw back on, and when you go to fire the bike up, it will fire up at full throttle. Please don't ask how I know this ....... Juanitoboy93 loves this story!)
Anyway, screw the top cap back on, and go try 'er out.
From the sounds of it you have something that is restricting your fuel flow, which it is probably your petcock, b/c you should have a good flow of gas coming out of the carb with the drain screw off. Disconnect your fuel line from your carb and pour a little gas in the tank to see if its your filter or lines that are blocking your fuel. If it flows out good then you can eliminate that. Then I would have to say it's your petcock. The little rubber pieces always end up restricting fuel flow. Use the search tool and look up petcock mod and do it. Hope this helps
I'm going to try one thing at a time. First the petcock mod. Do I have to remove the stock on/off valve? Can't I just drill through it as it is? (removing it and the o-ring first of course).
How do i reasseble the stock petcock. I found some crap in there and just cleaned it out. Now I can't figure out how to put it back together with the 3 pieces.
thnaks
I would say you found your problem. A very common one at that!
To reassemble the petcock; preassemble the white knob with the wavy washer over the shaft and then install the horse shoe washer to hold it on. The fact of the white knob shold seat flat against the rubber seal, then the rest just holds it in firmly. The wavy washer can be a pain while assembling it, but with a bit of work, it will fit together.
Before you put it back together, remove the rubber seal and make sure none of the little bits are plugging the carb passages.
Well, didn't work. I put the wavey washer on first since the white knob fits inside it. Then I put the u-shaped piece on (with the gap at the top). Then I put the namplate piece on last and screwed it down. The only problem is it didn't get tight. HELP!
Sorry I wasn't a little more clear; I wish I could draw you a picture.
The screw plate goes on first, when assembling it the way you describe. It should appear on the outside and is what holds the wavy washer against the horse shoe washer, which, in turn, pushes against the shoulder of the valve which pushes against the rubber seal. Lol
The screw plate can also be added last which is why it has the slot cut into it. When assembling it you should feel a bit of pressure when it presses against the seal. The wavy washer can also be a pain to keep centred.
Well, I did that and now have flow out of the bottom of the float bowl (when I remove the bottom screw). Still have a problem. Choke up, it'll idle but as soon as you give it gas it dies. As soon as I touch the choke and move it down a tiny bit it dies too. I don't know what now. I emailed the guy i bought it from and told him to give me a new carb. i don't know what else to try. I can get it to idle higher with the throttle but I have to give it VERY slowly and only with the choke up. Even then it doesn't run right. If there's any weight on the rear tire too forget about it. I'm fed up
Don't give up, dude ... everybody's been there several times ourselves! Hang in there, and it'll be okay, promise.
Whadaya think, guys? Too much gas, or not enough? Sounds like he's getting it to run on full choke (not very well), but it's dying as soon as he hits the gas. I think he's not getting enough fuel running into the carburetor. My guess is to move the c-clip down a notch or two on the needle. Charlie, give that a try - move the c-clip on the needle down a notch or two, and see if that helps.
I'll try that but I'm also getting a new carb on warranty sent to me as well so we'll see how that goes. I'll let you all know. Sorry abou the ranting, I was just pissed off last night. Thanks for all the help
How do I get the throttle assembly apart. I feel like a retard, but I couldn't get the little brass needle or whatever it is out of the black plastic peice
First of all, take a picture of how it looks right now, with all the pieces together on the end of the cable. You'll need to reassemble everything like this in a couple of minutes. (After you do this a few times, you won't need the picture anymore - it's pretty easy.)
Compress the spring just enough so you can pop the cable out of its setting. You take the cable off the throttle slide (the cylinder) by slipping it through that long groove running from one end to the other. Everything else should simply fall apart after that.
When you go to reassemble it, the needle goes into the cylinder first, followed by the half-moon clip. Thread your cable through the spring, compress the spring again, and thread the cable back through that groove. There's a little notch on the underside of the cylinder where the cable end fits into.
Well changing that needle c-clip is pretty easy. But I found my problem today. See the pics. I was trying to start it and it seized when I took off the starter, the flywheel fell out in 2 pieces. So I emailed the guy I bought it from to see what he says (30 day warranty should cover it). That's why it wouldn't rev up with the throttle. Has anyone had any problems like this and is there an aftermarket flywheel that might be stronger than this peice of #$$.
