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Post by scoots on Aug 24, 2013 21:55:27 GMT -5
yeah ur piston is blown OR a gasket in the head either way u sholud get a bbk because you hhave to take it all apart anyway
mine did that and bbk are like $50 shipped u will spend the same if ont more for stock stuff
when a bbk comes with piston, gaskets, cylender and head (if 100cc bbk)
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Post by ronnoc923 on Aug 24, 2013 22:49:30 GMT -5
I was talking to my uncle who works on restaurant equipment and he says that it might be the gears inside of the transmission area. Would that cause it to move slowly like in the 10 to 15 mph? Because my engine rev's pretty high and seems good from what he says.
What do you think?
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Post by scoots on Aug 24, 2013 23:04:03 GMT -5
no offense but transmision has nothing to do with the smoke the only thing the trany has in common is the crankshaft which spins variator
ur engine dont smoke like that unless ur a 2-stroke
your cylender is getting oil in the combustion buring oil is white similar to a car
you very well could have melted the shaft or warped as they say
but the smoke means u blew somethig in ur top end
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Post by ronnoc923 on Aug 24, 2013 23:39:47 GMT -5
Ok for future notice lets just rule out the smoking issue because that was from the lubrication that was being burnt off. As I stated from before......
I put new engine oil in there fully synthetic and there is NO smoke, only time when smoke comes out is when I take the carb cleaner and spray around the engine where there is a air leak and when the carb cleaner gets into the engine and burns out there is white smoke.
For the overheating issue I am guessing my variator fan is messed up because before it ended up melting a little bit and some of the top got shredded a bit but not to bad. I heard that the variator fan REALLY makes a difference when you have heat inside of your CVT, correct me if I am wrong though...
But lets try to focus on my speed issue though, since I am not going above 15 mph what do you think could be my issue? That im not getting enough gas to air ratio and my air ratio is to high? or maybe my transmission gear is messed up and need a new one?
I dont know why many people are not really willing to help much even when I am offering a cash prize for the person that helps me figure out the issue...
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Post by tvnacman on Aug 25, 2013 7:47:15 GMT -5
ok here are your problems :
You did not hone the cylinder and stager the rings , that's the smoking .
The overheating is from not having the engine shrouding .
The slow wheel turning is most likely your rear brake is binding . (turn the wheel by hand)
Synthetic oil is good after breakin , if you did stager the rings correctly .
Can you make rpm on the center stand ?
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Post by tvnacman on Aug 25, 2013 7:51:50 GMT -5
yea you will over heat your fan shroud and cylinder covers are missing they are what keeps your motor cool If you prize will be sent it should go to above , this will solve the overheat problem . I bet you might get more mph with the shrouds provided you replace the overheated parts in the cvt . John |
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Post by ronnoc923 on Aug 25, 2013 8:18:54 GMT -5
Its not the breaks because as it shows in the video when it is on the centerstand the wheel moves finely. Even with no throttle and a little bit of highly adjusted idle and the wheel moves. Ill put the engine covers back on and see if it fix's the overheating issue. But as I said from before there is no smoke anymore after running it a couple of times I suppose it was just from excess oil on top of the piston when I first put it together and used lubricating oil.
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Post by tvnacman on Aug 25, 2013 8:24:47 GMT -5
assembly oil burns off in the first few minutes . Now since you overheated the heck out of it , I would check to see if you cooked the valve seals also the crankshaft seals . The oil in there is burned and needs to be changed . I would check valve lash again and again after a few hours run time .
John
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Post by dude on Aug 25, 2013 10:09:26 GMT -5
The overheating of the cvt and braking of belts caused by the rear pulley. Not the clutch. The pulley system needs pulled apart and inspected. The outer should not wobble on the shaft. The 3 ramp guides should be smooth with no flat spots in the guide. The problem is caused by not being greased. Flat spotted rollers.
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Post by scootrboi on Aug 25, 2013 10:24:30 GMT -5
Check tire pressures
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Post by PCBGY6 on Aug 25, 2013 11:55:34 GMT -5
I didn't read all of the replies but if the woodruff key is broken it could be jumping time and making it run like that. I had a bad woodruff key and it made mine sound like a lawn mower and had no power.
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Post by PCBGY6 on Aug 25, 2013 12:05:40 GMT -5
Also, If that's the issue scrappy carries a flywheel puller for about $20 and woodruff keys for about $4.
It never hurts to have a puller laying around if that's not the issue and it wouldn't hurt to have a new Woodruff key anyway with 6000 miles already on the scooter and now you're adding more power.
Just my opinion.
PCB
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Post by nassauequipment on Aug 25, 2013 15:54:54 GMT -5
I agree with an earlier poster....something is binding.
How does engine run with the belt off?
How does final drive turn by hand with belt off.
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Post by ronnoc923 on Aug 25, 2013 22:16:12 GMT -5
[replyingto=tvnacman]tvnacman[/replyingto]Im thinking it might be the crankshaft seal because it looks really dry and brittle. What type of oil should I use to replace it with?
Well I thought it was dry and brittle but I guess I was thinking of something else but I thought there was a rubber cover on top of it or something but its not there anymore just looks like a kind of like metal piece...
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Post by freefour1968 on Aug 25, 2013 23:18:08 GMT -5
Crankshaft seal looking like that could be a result of the overheating not the cause . One question comes to mind though , did you clock your rings when you put them back on ? Havering a compression ring and one or two oil ring lingering up together could cause oil slippage and compression gasses to leak past the ring describing some of your symptoms and running it without the fan shrouds could describe your overheating .
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