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Running rich
by: 125scooterbro - Jul 25, 2017 12:50:31 GMT -5
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Post by 125scooterbro on Jul 25, 2017 12:50:31 GMT -5
I change the main jet with a smaller one. Still running hot, what can i do to fix it guys?
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Running rich
by: 125scooterbro - Jul 16, 2017 14:30:34 GMT -5
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Post by 125scooterbro on Jul 16, 2017 14:30:34 GMT -5
Did you do anything to the Scooter (tuning/jetting) to think it is Rich? or What makes you think its Rich? Another thing to consider is the Intake Charge of Fuel acts as a Coolant When it Enters the Cylinder, Your Not going to Melt Anything Down if it gets Too Much Fuel. This is a Fixed Jet Carb so not much on all on its own is going to make her go Rich. Running Rich and Hot should Not go hand in hand. Think of the Bunson Burner in School, On its own the Alcohol flame is Yellow Now Add the Air Hose and you are Leaning its out and the Flame Goes to Blue or White Hot, Good luck the spark plug is new and now it's black and greasy, also at around 60kmph i give it full gas..nothing. it hesitate, then boom its almost kick me of the seat speeding like crazy , happens all the time, at first i thought it runs lean but the exhaust smoke is wet and smelly and yeah like i say the engine is hot man believe me i have many of these scooters and this one is just hot. This is the answer on the how i know it runs hot, about if i tune the carb with new jets No. But maybe the old owner did, dont have so much history of this one cause the old owner move from the country and leave it to a woman from wich i buy it, i consider to buy a smaller main jet or a new carb from ebay, and see what will do around next week since i am busy at the moment |
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Running rich
by: 125scooterbro - Jul 15, 2017 17:28:50 GMT -5
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Post by 125scooterbro on Jul 15, 2017 17:28:50 GMT -5
Your Air Filter is Clogged........ Clean It........or Factory Jetting should be sufficient unless Someone else Changed that? How bout some more info of what ya got going on. issa 125cc qingqi 10-H with 11000km since i buy it in a bad shape i keep working on it, but it still running to rich like the day i bought it and get's hot quick, here is what i do so far, rebuild the carb, new air filter, new fuel hoses/fuel filter, adjust the valves, and double check everything, now someboooooty tell me that it can be the ingnition system? Don't know for sure, i buy this scoot to use it for parts for my other Qingqi 125-10-D wich is pretty same like the H with different design but the engine is same, i want to give it another chance maybe ride it this summer but if i dont fix this i am pretty sure i will melt the piston or even mess up the cylinder. But you made me thinking about the main jet, when i take a look inside it to see day light i have think that the hole is to big like the other jets is see but i dont think about it at the time and just put it back, i will check with my other scooter the jet to see any difference since the carb and engine cc's are the same. Thanks |
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Running rich
by: 125scooterbro - Jul 15, 2017 11:32:53 GMT -5
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Post by 125scooterbro on Jul 15, 2017 11:32:53 GMT -5
Hello there, what is the main reason or reasons a typical chinese scooter running to rich and how to fix it? Thanks
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Valve Question
by: 125scooterbro - Jul 13, 2017 2:21:37 GMT -5
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Post by 125scooterbro on Jul 13, 2017 2:21:37 GMT -5
Hey all! So- i have a Taotao Quantum 150-2016. Do my valves need to be adjusted because they will get tighter with time? Or looser? They do both, in my case the engine got hot very quick and yesterday i find out the valves was to tight. So they can get both looser and tighter over time |
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Post by 125scooterbro on Jul 6, 2017 7:59:01 GMT -5
So guys i found my problem, 2 years ago i remove the kick start because i was broken and i try to fix it but i get only angry with that piece of S, anyway it was a the hole in the crankcase for the things of the kickstart in wich it was a spacer that i just forgot there, now with the fall that thing come off because it landed on the tranmission side. Duh..easy fix only that it need to take the clutch away and all those bolts, now i put it back together because it's a sunny nice day here in a long time and the scoot must be ready
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The fall
by: 125scooterbro - Jul 6, 2017 6:28:19 GMT -5
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Post by 125scooterbro on Jul 6, 2017 6:28:19 GMT -5
So like i say the sound come from the end of the variator on the clutch spring but i may be the gears also, i will check them if they are in place now. Who knows maybe they a litlle bit out of place..
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Post by 125scooterbro on Jul 6, 2017 2:48:45 GMT -5
Aside from being a bit dirty, nothing on the variator side of the CVT looked worn-out or broken. The only thing wrong from what I could tell is that most of the roller weights have flat spots so I'd like to get a new set of them. I don't know what the weights are when stock. Whatever I have now works well for me and seem to give a good middle ground between having decent acceleration and top speed. Most ebay sellers have 8.5g rollers. I have a gy6 service manual that says the drive belt should be 18mm in width and should be replaced after it goes beyond 17mm. Mine is at 16mm so I'll like to get a new belt. I currently have a Gates Power Link which I heard is a good brand for these gy6 CVTs so I'll get another one. $20 impact wrench? I didn't look around a whole lot but the cheapest one I came across was a $35 air powered one with pretty lousy reviews. And it didn't even come with an adapter to hook it up to a compressor. I was about to get it anyways but changed my mind after seeing this video. The guy said he tried both an electric and air powered impact wrench on the nut with no luck. Eventually, he got it free by basically doing the same thing I did. Plus, I already had all the stuff on hand but the impact socket and 1/2 drive socket wrench which I just borrowed from my brother so it didn't cost me anything. good to hear, usually the first thing can wear off is the weight rollers and there comes the bad sound from the cvt, il suggest to make a tool for removing the roller box because you will need it in future or just get one from ebay with 10$ much better than the impact gun if you ask me |
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The fall
by: 125scooterbro - Jul 5, 2017 15:10:24 GMT -5
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Post by 125scooterbro on Jul 5, 2017 15:10:24 GMT -5
Qingqi 125 10-D per previous posting . . so probably a typical GY6 engine.
Engine oil MAY have drained out of the valve cover vent port . . and soaked the inlet air filter, if connected to that housing.
Trying to diagnose a deficiency telepathically is pretty much an exercise in futility . . how about a little more initiative on your part!
you are right. I must take more initiative by myself but this happend just today and i never have a scooter laying in the side for some one hour and i dont know what can go wrong first. But thanks anyway, tomorow i will check everything to see what happend. And yes this is the scoot that you mention, a 125 |
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The fall
by: 125scooterbro - Jul 5, 2017 13:28:37 GMT -5
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Post by 125scooterbro on Jul 5, 2017 13:28:37 GMT -5
So i get out from the house and my scooter was laying on the side, it's a 11 years old scoot with perfect paint and now it has 4 major scratches deep in the plastic, it was not on the main stand and it was a very windy day here today, i have take very well care of this scoot because i was the mechanic all the time when something went wrong, before it starts right up but now it takes a while to start and also it has a rattling noise from where i'm not sure but it seems it comes from the transmission, do you guys know what is the first thing can go wrong when it falls on the side?
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Hot engine
by: 125scooterbro - Jun 27, 2017 10:55:15 GMT -5
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Post by 125scooterbro on Jun 27, 2017 10:55:15 GMT -5
It is far more likely to be a lean condition causing your scooter to run hot, than your choice of engine oils. You say this is a project bike.....have you modified or removed the air intake system? Not knowing what your set up is now, or what parts have been changed or modified.....we are in the dark, and can only guess as to what's wrong. everything original, only thing i change was all the variator with a brand new one, not the clutch tho, because it's in good condition, cleaned the carb,air box new oil motor/gear double check everything and that's about it. The engine sounds and drive good, you say i can be running lean so if i play with the air screw it will help or something else i can do? |
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Hot engine
by: 125scooterbro - Jun 20, 2017 7:58:21 GMT -5
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Post by 125scooterbro on Jun 20, 2017 7:58:21 GMT -5
It is far more likely to be a lean condition causing your scooter to run hot, than your choice of engine oils. You say this is a project bike.....have you modified or removed the air intake system? Not knowing what your set up is now, or what parts have been changed or modified.....we are in the dark, and can only guess as to what's wrong. I put new air filter, all the hoses fuel/ air replace with new also, but my mistake is also that i create this thread before i have the time to take a look at the carb and do also some adjustments to the air/fuel flow, the scoot has 11.000 km so i think it needs a carb adjust, i plan to keep it original only replace something if it's broken and keep it cheap with the parts because sooner or later this will be my donor scooter for my main ride, If you know how to make a carb adjust so it will be not lean but not so rich i will apreciate because i'm clumsy person, the carb is pretty common chinese one with the air screw located on the side with the transmision and the fuel one with the exhaust, Dany |
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Hot engine
by: 125scooterbro - Jun 19, 2017 6:22:07 GMT -5
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Post by 125scooterbro on Jun 19, 2017 6:22:07 GMT -5
is the shroud all there? is the fan on it? i have seen people riding with no plastic on the front of the engine and it causes them to overheat. they do run hot because they are air cooled and when it is high temps outside they tend to run hot. if it is losing power after it gets hot then you have a possible overheating issue and need to make sure the oil pump is working and the fan is blowing air through to the top end of the engine. Pretty sure the oil pump is good but i will check it next week when i have the time, about the fan cover i have it there because yes as you say it help the cooling. Also i will put syntetic oil since when i change it i have only mineral, maybe that it will help, and try not riding it like i use to do. Lol |
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Hot engine
by: 125scooterbro - Jun 18, 2017 7:25:02 GMT -5
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Post by 125scooterbro on Jun 18, 2017 7:25:02 GMT -5
Hello guys, how hot a 125 4 stroke can get? My scoot that i buy 2 months ago as a project is finally finish but i think the engine gets very hot quick like after only 10-15 min of riding, i know that because of the lack of power after some time of riding it and the engine is just damn hot, it's 25 C around all summer here maybe 30 sometimes, the oil is new also the gear oil, is it normal or just me?
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Post by 125scooterbro on Jun 14, 2017 13:21:07 GMT -5
Didin't know 83 octane even exist today, here in Sweden it's only  and and on my scooter the manual says to use  octane but i have no choice but We have all sorts of diluted but pricey fuel here in the US... Kind of ridiculous when you think about it. Who in their right mind would intentionally feed their engine ethanol-diluted fuel? My bad, it's and 98 here since early 2000' and about the ethanol-dilueted fuel i have also some thoughts about it because in some places the bensin dont smell the same, for example i do a refuel yesterday and the fuel smell like burned rubber with some alchool smell like. A another example my neighbor have a old triumph wich he just restaurted with very good quality parts from UK Triumph center and he show me the gas cap, all rusted inside out on the surface so he tell me that something is wrong with the fuel nowdays |
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and 
octane but i have no choice but