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Post by unbrokenchain on Apr 24, 2015 21:23:28 GMT -5
Hello, hopefully someone can help me....I just bought a 50cc jonway gator that needed a little work. The belt needed changing so I did that by following some online instructions. Changed out the spark plug, I am getting a spark. Was able to get the motor running with starter fluid, but it was pretty choppy. I figured the carb needed cleaning. Took it apart and sprayed carb cleaner all throughout, tremoved and cleaned both jets...they were clogged so I figured that was the problem. Put everything bake together and now I can't get into start at all, even with starter fluid. I've double checked that I put everything back together, I'm surprised that it won't start at all. Any ideas would be much appreciated, I think it probably needs a new carb but it doesn't make sense why it won't start at all after cleaning it. I've done some work on lawnmowers before so im not totally clueless. I took the carb apart a second time and gas was in there so I am getting gas, could something be clogged? I'm about to just order a new carb.
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Post by Silar on Apr 25, 2015 0:23:32 GMT -5
Welcome to the forum! I'm not too old on here also!
I'm not the most expert person at working on these scooters, but if I were you, I'd just buy a new carb. You can get a really good carb on ebay for around $25 shipped to your door. That's what I did. I do have the original carb soaking in some berrymans to rebuild and make as a spare.
I would worry that your float valve is old and isn't sealing and is letting too much gas in which may in turn possibly wash the cylinders. Do you have your float set properly?
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Post by unbrokenchain on Apr 25, 2015 8:14:49 GMT -5
I was looking at the float and I'm not sure how to set the float properly, when I took it off the second time I noticed there was a lot of gas coming out. Should I soak the whole carburetor? I only sprayed it out and soaked the jet pieces. I'm probably going to order a new carb but I wanted to get this one working if possible. Thanks for taking the time to read my post and respond. I enjoy working on things and I'm trying to become a better mechanic.
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Post by Silar on Apr 25, 2015 10:25:11 GMT -5
If you want to try and rebuild that carb, you need a rebuild kit. comes with all the gaskets, o-rings, new float valve, jets, etc. You can get them every day on ebay for around $7-$12. Get a gallon can of berryman's carb cleaner and soak everything for a day or so (of course minus the gaskets, orings, and plastics. Or for around the same price of the rebuild kit and berrymans, buy a new carb.. Here's the one I bought.. Carb |
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Post by unbrokenchain on Apr 25, 2015 21:33:57 GMT -5
I went and got a new carburetor and it started right up... Thanks for your help, if I decide to work on my old carb I'll buy a rebuild kit.
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Post by niz76 on Apr 25, 2015 21:36:24 GMT -5
Some of these Chickety China scoot parts are so cheap it makes sense to just replace instead of pulling your hair out cleaning every tiny orifice perfectly in a gummed up carb... Glad u had a happy ending!
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Post by Silar on Apr 25, 2015 21:53:26 GMT -5
Some of these Chickety China scoot parts are so cheap it makes sense to just replace instead of pulling your hair out cleaning every tiny orifice perfectly in a gummed up carb... Glad u had a happy ending! Yes! Glad it worked! And I totally agree with niz.. That's why I was happy to find out the cheap scooter I bought had a GY6 engine. Everything is sooooo cheap! |
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Post by unbrokenchain on Apr 26, 2015 13:50:00 GMT -5
So I had the bike running yesterday, just started it up for a minute to verify its working....it was but I didn't ride it because I needed to put some loctite on the variator nut. Tried to start it this morning and I couldn't get it running even with starter fluid in the carb. The carb had a new fuel filter and auto choke so everything should be fine. I'm about to by a compression tester or could the CDI be bad? The bike only had 300 miles but the guy who had it didn't take care of it...kind of dumbfounded at this point.
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Post by stevec on Apr 26, 2015 14:31:11 GMT -5
make sure there are no vacuum leaks, the clamp on the intake should be tight.
there is a vacuum line on the intake that goes to the fuel petcock, if that is broken or off it won't start.
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Post by stevec on Apr 26, 2015 14:31:21 GMT -5
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Post by unbrokenchain on Apr 26, 2015 19:30:00 GMT -5
I double checked the clamp on the intake, it is as tight as I can get it. The line running to the petcock looks good and is attached. I've checked the compression by putting my finger over the spark plug hole, it popped my finger off with good force. After doing this I sprayed starter fluid directly in the engine to see if it would start, still nothing. Double checked the spark...I'm getting a good blue spark when trying to start the scooter. The spark plug did have a little gas when I pulled it out so gas should be reaching the engine. I think my next step is to adjust the valves... I haven't checked this. Anything else I could be missing? One other thing about the fuel petcock.....I pulled the fuel hose off the carb and tried to start the scooter...fuel slowly leaked out but should it have shot out faster? I could see fuel in the fuel filter. I would imagine the engine would still start for a second when spraying carb fluid in.
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Post by Silar on Apr 26, 2015 21:48:31 GMT -5
If you have a way to bypass the fuel petcock and temporarily run from the gas tank to the carb, try that. Your vacuum fuel valve may be leaking gas into the vacuum hose which is connected directly to the intake and could be creating an overly rich condition not allowing you to start. Ask me how I know..  |
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Post by 90GTVert on Apr 27, 2015 7:41:43 GMT -5
If the bowl is filling and you've got gas on the carb it shouldn't be a lack of fuel causing the no start. Maybe it's flooding? Try holding the throttle open if it won't start at first. You can check spark when it won't start quickly and then you have a good idea if some ignition component has an intermittent problem. If it cranks slowly it's less likely to start too. Definitely check the valves.
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Post by unbrokenchain on Apr 27, 2015 16:24:58 GMT -5
I checked the valves and they were not spaced correctly I used a feeler gauge to set them to .005, still nothing. I'm not even getting any sound resembling the engine starting....double checked the spark plug against my frame and I'm getting a good spark. Pulled out the carb and there is gas in it. I can't find a way to bypass the fuel petcock. should I just buy a new one? they are only ten bucks....when I pull the fuel hose off the carb gas continues to leak out, isn't the petcock supposed to preven this from happening? If I can't figure this out soon I might have to take it to a shop, I was trying to avoid this because the cost. One other thing that seems odd is sometimes when I try to kick start the bike it is stuck and I can't move it....it eventually frees up and I can hear the engine compress but nothing happens. Could my starter clutch be bad?
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Post by Fox on Apr 27, 2015 17:00:24 GMT -5
Did you drain out and refill the gas tank? Old gas don't like to ignite. If the gas looks like pee then it's the problem.
Easiest way to drain the tank is to remove the fuel line from the carb and stick it in a milk jug or whatever. Then you remove the vacuum line from the intake, suck on it and fold it in half as you are applying vacuum. Wrap a rubber band, zip tie or whatever around the vacuum line to keep it pinched in half and then you just watch the gas run out of the tank.
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