Need Help!/My bad Gy Experience Please Read Before buying GY

[jo3cool]

First off, I have the Sunl GY200. I have had the bike since it was brand new in the crate. It is about 2 years old now with about 1500KM on it, 99% on the street. Perfect maintenance has always been kept on this bike.

Today I have encountered a problem that I need help solving. While riding my bike power started cutting out. I pulled off the road with the bike needing a lot of throttle movement to keep it running. It eventually died and I sat for about 30 minutes before I could get it running again (it seemed there was either no fuel or no fire during this time). Eventually I got it running again and was able to drive it home (i was only about a mile from home) but the whole time power would just cut in and out and it would struggle to run at times. I don't really know what could be causing this but my only thoughts are some type of fuel blockage or a problem with my coil. I had a similar problem last year in the way that I was having power loss and cutting out while riding but it never had a problem starting or running. I replaced the coil and it ran like a champ. The new coil probably only has 150Km or less on it. Has anybody had any of the same problems with there GY? Does anybody have any suggestions on what to do?

As for my experience with the GY, it has been mostly frustrating and I would never recommend these Chinese bikes to anybody. Since I have had it I have fought with vibrations and pieces breaking off from vibration despite everything I have done to stop it. I have had my kick starter fall completely off on the road. License plate that has nearly broken in half from the vibration. Light burning out on my gauge. My license plate light, no matter how many times I put a new one in, buns out within days (I'm assuming from the vibration). I have fought with the flasher, and the lights not flashing at all or far too slow. The original fuel filter broke after about 100KM nearly releasing all sorts of metal flakes from the new tank into the engine had I not immediately noticed. The original coil went out, and now possibly a second coil (or some fuel problem). The welds and mounts have have broke on my exhaust in two different places (after maybe only 500km). The welds have broke on the cargo rack on the back (nothing was ever attached to it).

I wish I could recommend the GY to others but I never would. It is really bad quality, poorly built. It seems like the metal is very soft and could easily break if ridden hard, and the welds are horrible and easily break. Sometimes I love this bike but most of the time its sitting not running...

I just wanted to let people know my view of the GY in case they are considering buying one.

[alonzo]

that is odd. I have ridden the living crud out of my bike. in hard stop and go conditions and the only thing that ever kept my bike from moving was the bolt that holds the drum to the frame came out. my fault I did not tighten it up enugh. and the drum wrapped around the axle.

I love lucy. and would reccomend her to anyone wishing to get a cheap ride.

as far as your issue with the getting stranded, You ever put on a fuel filter? if not there is a chance that you could have gotten some filth in the main jet. Pull carb and clean it.

that was an expirence I learned on an old honda XR. she left me stranded about 15 miles from anything. 1 mile sheesh, amatures.

[culcune]

I just wanted to let people know my view of the GY in case they are considering buying one.

Wow, sounds like deja vu from my experiences with my Jetmoto from 2 years ago! 8O 8O

[jo3cool]

I love lucy. and would reccomend her to anyone wishing to get a cheap ride.

as far as your issue with the getting stranded, You ever put on a fuel filter? if not there is a chance that you could have gotten some filth in the main jet. Pull carb and clean it.


I really wish I could say the same because at times (although rare) I do enjoy my bike and feel it was worth the money despite the problems. And I don't want to tell anybody not to buy one just because of my bad experience, just think people should hear and know about the good stories and the bad before deciding on the GY.

And yes I have put on a new fuel filter. And my carb has been completely cleaned last year inside and out, and the bike only has about 50KM on it this year.

[alonzo]

how about the plug wire? Does it have any burns?


Will the bike run okay for any amount of time? If so check the battery with volt meter. set idle at 300 rpm, volt meter should read 13.5 to 14.5 volts.

Have you parked it anywhere that water could've gotten into the tank?
If that is a possiabality check to see if will the bike run on reserve.

[warrior91]

dirty carb...crap in main jet...

[jo3cool]

how about the plug wire? Does it have any burns?


Will the bike run okay for any amount of time? If so check the battery with volt meter. set idle at 300 rpm, volt meter should read 13.5 to 14.5 volts.

Have you parked it anywhere that water could've gotten into the tank?
If that is a possiabality check to see if will the bike run on reserve.

The plug wire is perfect, when I replaced the coil I made sure to zip tie it away from any heat. It will run ok at times, but only for 10-15 seconds at a time, or only at a certain throttle point in a certain gear.

It has always been in a garage and it was under covered parking last night before I took it out today, so no chance at water being in the tank.

As for the battery, it has been dead completely. It haven't replaced it yet after winter. But I have been driving the bike for about 3 days now just off of kick start and the bike has run completely fine those 3 days despite the bad battery.

[alonzo]

dirty carb...crap in main jet...

I still think this is the cluprit of the issues. Hey man if you are in kansas and really fed up with your bike, I will take it.

[kens97sto171]

I had a similar problem, weird hesitation but mine would go away after riding it.. only came back when it idled for a bit.

Cleaned the carb... (found nothing) and put a filter on it seems good now.

One other thought.. are you still using the factory fuel line? They are known to disintegrate on the inside clogging stuff up...Since you have a fuel filter, I kinda assume you changed the fuel line.. but thought I would mention it.

I would check all the grounds too.. mabye its electrical... and it sounds like you have several electrical problems. Try running a new wire from the negative battery post, to both the engine case, and the frame.

Ken

[TeamCheap]

Nope it sounds more like what happened to mine.

Mine would run fine for a wile then start to act up and then just stall and not start but after a few minutes it would fire right up.
It was very frustrating until I figured it out.

Do this.

Pull the fuel line from the carb
find a clean glass jar that you can catch the fuel in (a clean glass jar allows you to dump the fuel right back in after your done :wink: )
put the fuel line in the jar and let in run for a few minutes or until the jar is almost full
monitor the fuel flow and if it slows you have a restriction somewhere (fuel line, fuel filter, fuel petcock or the fuel tank cap is not venting)

If the fuel starts to run slow open the fuel cap and if it runs fast again then you'll know.

Mine was a faulty vent in the filler cap not allowing air into the tank as the fuel was being used.

sounds like you got a lemon. next time purchase an American Lifan and you'll have a lot less hassle as long as your dealer is competent and you do some of your own maintenance and upkeep.

[IronFist]

Sorry you didn't find this site sooner jo3cool.

I had the same problems with bulbs, I was told to get another rectifier, and I did. Never had another blub blow, ever.

If you had your bike in the garage for long periods of time, did you add gas stabilizer to your full tank of gas? Gas can separate and the water molicules can rust the tank, that can get into your carbs and cause the problems you seem to be having now.

You have a dead battery?

"As for the battery, it has been dead completely. It haven't replaced it yet after winter. But I have been driving the bike for about 3 days now just off of kick start and the bike has run completely fine those 3 days despite the bad battery."

IMHO bikes like a fresh battery. Again you said..
"Perfect maintenance has always been kept on this bike."

If you didn't get a good battery, locktite every bolt and redo your engine mounts and had a bad experience I understand. I urge you to do them now, and get a rectifier/regulator. Proper riding gear, oiled chain, fresh oil and plugs, new fuel filter, clean out the carb as well. I can't promise anything but you might start feeling a little better about your bike. :D

[jo3cool]

You have a dead battery?

"As for the battery, it has been dead completely. It haven't replaced it yet after winter. But I have been driving the bike for about 3 days now just off of kick start and the bike has run completely fine those 3 days despite the bad battery."

IMHO bikes like a fresh battery. Again you said..
"Perfect maintenance has always been kept on this bike."

If you didn't get a good battery, locktite every bolt and redo your engine mounts and had a bad experience I understand. I urge you to do them now, and get a rectifier/regulator. Proper riding gear, oiled chain, fresh oil and plugs, new fuel filter, clean out the carb as well. I can't promise anything but you might start feeling a little better about your bike. :D

Well besides the battery in the last three days it has had perfect maintenance, and thats only because I haven't been able to afford it and the bike currently has been my only transportation. I also didn't realize that the battery being bad could have adverse affects on the bike running.

I will put a new fuel filter on and I already had a new larger jet coming to go along with my new k&n filter so the carb will get completely cleaned out. Hopefuly that will solve all my problems.

As for all the bolts, I haven't had a problem with loose nuts or bolts anywhere on the bike. And oil and plug have always been done regularly.

Thanks for the help everyone. Will keep you updated...

[IronFist]

The engine mount bolt replacement might help the vibes...
You might also just dump all the old gas. Put in a litre of fresh and swish it around, then dump it. Then fill up with with fresh. It might not help but it's something you can rule out as a cause. Just trying to help...I'd like to hear that you are enjoying your ride. :D

[TheBrainII]

Check the gas cap. Mine does that every now and then. Mostly after I fill the tank full. I think the vent in the cap gets stuck. This creates a vacume in the tank and motor can't suck the gas out. Next time it happens, stop and take the gas cap off and put it back on. See if it starts.

[fatboy250]

The engine mount bolt replacement might help the vibes...

Indeed!! This will help the majority of the problems that are being created for you by vibration.

[Dragon]

Only 150 km in one year! That's like 90 miles. Obviously, the problem is that you've not ridden the bike enough.

[Rizn]

I agree,the bike has sat for to long, water in gas, same thing happened to my HONDA 250, Start with fresh gas And BTW how fast is the fuel supposed to come out of the fuel petcock, drips, or stream

[TeamCheap]

I agree,the bike has sat for to long, water in gas, same thing happened to my HONDA 250, Start with fresh gas And BTW how fast is the fuel supposed to come out of the fuel petcock, drips, or stream
You should have a nice consistent stream of fuel.if it slows or stops you will have problems.

The float and the related float needle control how much fuel the carb needs to operate (by filling the float bowl) so you want a good ample supply up to the carb.

[iamdav]

Your battery will not affect how your bike runs at all, but it will affect how your lights work.
My battery box broke off and the battery fell between the frame and wheel and by the time I could get off the road the wheel ripped the wires off and chewed away a huge chuck of the battery, so I left it off and now my bike is kick start only. Still runs great but lights and blinkers are very weak at idle.

[knothead]

Check the carb. Sometimes the top of mine will unscrew just a bit and then it runs like you described. Even just a little bit makes a big difference.