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Post by ronnoc923 on Aug 23, 2013 23:04:06 GMT -5
At this point I really need help getting this bike fixed. So I am offering the first person to help me figure out what is wrong with my bike $50 via Paypal. I am true to my word and kind of foolish with my money I will most definitely pay you the money if you do figure out my problem though. So this is what I got. A 50cc Taotao about 1 year old with somewhere around 6k miles. My problem first started about 3 months ago, I was driving home and my belt broke off. After that when I got a new belt I noticed that I was having over heating issues, so I went into my CVT and had replaced the Clutch, clutch springs, torque springs, Variator and roller weights all with performance quality gear. After that I was still having over heating issues, so I changed my gear oil and after that I noticed that the heat was not coming from that area, I have fully synthetic oil already. When I had my second belt my bike was still going pretty decent but around 35 mph instead of 40-45 mph, over heating would still continue and after a while it seemed like the belt was slipping or something, I then found that it was my clutch pulley and it needed to be lubricated so when I did that my bike seemed fine and was getting about 40-45 again almost about 50 mph, overheating would still continue and after about 2 short rides the lubricant was burned off and needed more. Then my kevlar belt broke, and when that happened my bike went to , when I got a new bando belt made of aramid cord, I hopped on and my top speed was about 10 mph and after a 2 min drive down the street and back my bike was already over heated in my CVT. I then went to explore further so I opened up my piston and saw there was scorch marks along side the piston so I figured that I needed a new piston. Also before I checked the piston I thought that maybe there was something clogged in the muffler so I took it off and tried running it and when I did I blew something I think and now it sounds like a lawnmower. So I bought a new 47mm big bore kit, put it all together and lubricated the piston and cylinder like I saw on youtube and set the gear and that thing that has the fan on it thats connected to the engine to the right spot so the were set or something. I now have it running again but still sounds like a lawnmower and wont go above 10 mph and I say 10mph while its on the centerstand you can tell that the wheel isnt turning fast at all on WOT. I have spent over $300 in trying to fix this and still haven't gotten anywhere, so I really need help because this is my only transportation to work and back at this moment and I am waiting to get my license. Thanks for any help, Connor
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Post by justbuggin2 on Aug 23, 2013 23:51:43 GMT -5
the sounding like a lawnmower is most likely due to a missing gasket for the header pipe coming off the head if you have it time right it should fire right up I would also pull the clutch off and apart clean all the parts and lube the pivots while have the clutch off there is roller bearing inside the center shaft hole that needs grease in it take a piece of sandpaper and knock of the glazing of the pads and the inside of the bell good luck with it
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Post by freefour1968 on Aug 23, 2013 23:52:38 GMT -5
During all this overheating it is possible the cam chain may have gotten stretched and causing the low speed . Did the overheating at the cvt ever go away ? With new variator, clutch, spring, only thing I could thing would be a bearing that has gone dry . When they do they can cause significant heat and may have been your overheat problem to start with . Check your clutch shaft bearing . The going only 10 mph could be Cdi going out or the cam chain has become stretch because of the overheatings . Let us know .
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Post by doublert on Aug 24, 2013 0:02:56 GMT -5
If it sounds like a lawnmower, maybe your exhaust gasket blew out? That happened to my brothers V.I.P 50 and we put a new gasket on and no more lawnmower sound. As for your high temp in your cvt, and belts breaking, that could be in the way you operate the bike. Do you ride wot a lot/redlining? Traveling really really far distances? My cvt has everything upgraded and it still gets a little hot. There is an opening on the front cvt case for cooling, sometimes theres a rubber cap with holes in it, sometimes theres a short hose. check that and see if it is blocked and not allowing air to get in.
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Post by ronnoc923 on Aug 24, 2013 0:08:47 GMT -5
Once it started over heating everything that I replaced didn't fix my issue. I do not believe that the Cam Chain is bad because when I attach it the the Cam and tighten it a little bit it seems like its nice and snug. Now also when I got the new piston on there after running it for about 20 secs then turn it off I see a decent amount of white smoke come out of the engine area, I believe that might be the lubricant oil I have on there just burning off. At this moment though I am not able to take it for a small test drive to see if there is a overheating issue still because I cant get it above 10 mph and it wants to stall out to much plus after running it WOT for about 30 sec's it just cut out and the white smoke poured out a bit. Im gonna try to readjust some things to see if I cant get it working.
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Post by doublert on Aug 24, 2013 0:11:33 GMT -5
Well nevermind, those other guys have better technical ideas/diagnostics than mine. I sure hope you get it figured out. On here, you don't have to pay just for people to help you out, that's why we're all here!
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Post by ronnoc923 on Aug 24, 2013 0:13:32 GMT -5
Now for the lawnmower sound I am not sure if it is the gasket because when I took off the muffler and started it up the bike sounded normal just a little bit louder then after 10 sec's something sounded like it popped and it started making that noise. When I first got the bike and before the belt broke for the first time I could drive it for 30 mins or even a hour at WOT and the CVT area wouldn't be to hot just a little warm, the way it is now though seems about close to the 200F. I believe though that the heat was coming from the old piston because there were scorch marks along side of the piston so that means that the rings must have been going bad so the heat was passing through the engine which is right next to the CVT area.
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Post by doublert on Aug 24, 2013 0:23:46 GMT -5
Now for the lawnmower sound I am not sure if it is the gasket because when I took off the muffler and started it up the bike sounded normal just a little bit louder then after 10 sec's something sounded like it popped and it started making that noise. When I first got the bike and before the belt broke for the first time I could drive it for 30 mins or even a hour at WOT and the CVT area wouldn't be to hot just a little warm, the way it is now though seems about close to the 200F. I believe though that the heat was coming from the old piston because there were scorch marks along side of the piston so that means that the rings must have been going bad so the heat was passing through the engine which is right next to the CVT area. Well, it sounds like we should pay you 50$
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Post by geh3333 on Aug 24, 2013 1:10:15 GMT -5
The cam chain has a tensioner which keeps a steady tension on th chain so there should be no stretching that would make a difference.
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Post by millsc on Aug 24, 2013 7:28:02 GMT -5
300 bucks to make a tao run is alot you'd be better off to buy a new one online you can get them cheap for 650 bucks and transfer your big bore kit over
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Post by scoots on Aug 24, 2013 8:58:34 GMT -5
u said white smoke?
means oil is getting in ur cylender
have u seen if u cracked your head or even had TOO much oil?
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Post by ronnoc923 on Aug 24, 2013 13:39:28 GMT -5
Here is a video. I got it put back together and it starts up I think I might need a new battery because im not getting enough juice ill probably make another video trying to start her up but it goes about 10-15 mph still but when on the center stand seems like it might be going a lot faster.
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Post by ronnoc923 on Aug 24, 2013 16:42:24 GMT -5
Ok I adjusted the cam chain tightener and now it starts up pretty easily. Although I am still getting a overheating issue... Im going to adjust my valves in a bit and get some carburetor cleaner to see if I have any air leaks just encase if im getting a bad air to gas ratio.
Now my variator fan is made of plastic and is a little scrapped up also it is pretty dirty inside of the CVT case. Im not sure if that would cause overheating or anything. I heard that the shaft that holds the variator has a rubber ring on it that holds the oil inside and if it goes bad it starts to leak, im not sure if the oil used in that is regular engine oil or if its a special type because the rubber ring looks pretty dry. Im going to go ahead and buy a fresh batch of oil just encase.
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Post by justbuggin2 on Aug 24, 2013 17:12:02 GMT -5
yea you will over heat your fan shroud and cylinder covers are missing they are what keeps your motor cool
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Post by ronnoc923 on Aug 24, 2013 20:54:10 GMT -5
I still have the fan covers I just put them to the side to put the new piston on. I got some carb cleaner and sprayed around some corners and saw there was a change in rpm's so ill try to seal those up and test it again plus ill adjust the valves and see what happens.
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