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Post by chehystpewpur on Oct 8, 2014 14:25:37 GMT -5
Personally when my 2 stroke was dying out and running alot like your first post said it was reminded me of when I bought my bike in non running condition. The exhaust pipe was bad and plugged and I tried a million things to clean it. Wasn't worth the hassle I bought a new one and have since put about 10,000 miles on it. With the kind of miles your has I'm sure a new top end is in line for it along with a better exhaust. Maybe if your lucky just the exhaust would help. If there is a gap at the exhaust flange I'm sure its making your engine lean out like crazy and overheat which would cause it to bog out and stall aswell. I wouldn't recommend welding it either honestly. The flat spot on the pipe could warp and never seal or the cylinder could warp and never seal properly. Especially if it was welded to the cylinder I seen a craiglist special a while back where they tried that because a bolt broke and when the top end grenaded they tried selling it like that. I cant even imagine the hassle of trying to pull the cylinder and exhaust off at the same time.
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Post by yongvx50 on Oct 9, 2014 13:48:46 GMT -5
Okay Guys, here is the video of it running. This is a lower quality version of the 1080 HD video I shot so I could upload it now instead of having to wait till after midnight to upload a 1.05 gig video instead of the 60 Meg version I uploaded. Hopefully you can tell what I need to do first. It sure blowing out allot of smoke when revving it up.
chehystpewpur, I plan of upgrading the top end as soon as I can afford the parts. I am fixing to move into town so the extra money I would normally have is not going to be there for a few months.
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Post by chehystpewpur on Oct 9, 2014 14:21:46 GMT -5
I completely understand the low money aspect. I gotta fart twice to make a sent most days but hey thats why I'm glad parts are cheap for these lol. I can most certainly hear the exhaust leak. I've heard of a few of these bikes coming with a tiny main jet in the carb in some cases smaller than the engine even needs. Qj leader carbs are the top quality knock off carbs and they have a good size jet. Mikuni carbs are the good ones though. Normally they come with a slightly larger jet than you need but they run well with one. Scrappy dog has low quality top end kits but parts for scooters dot com carries decent stock top ends for a reasonable price. Scrappy dog and eBay do have a good quality exhaust pipe for about 100 bux I know it doesn't sound cheap but our exhaust is very important to our engine. It works like the valves and camshaft at the same time. Possibly check if your reed block is leaking it should be under the rubber tube for your carb or metal tube if it has one of those. Its a common leak that leans out your engine aswell. It sounds like when it runs though its still somewhat healthy compared to what mine sounded like at first. I do hope you can get it sorted out and have cheap reliable transportation for running around town. These 2 strokes are a blast to drive when they run right.
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Post by Sitticuss on Oct 9, 2014 18:13:48 GMT -5
Have you taken off the carb and run some cleaner through it yet? You can also hopefully see what size jet it has in it. Fix the exhaust leak and clean the carb. Bet it will get up and run then. I know the place "Motor Toys". Been there a few times. Don't have much nice to say about the man but his scooters do run good when they go out the door. I'd check for leaks and clean the air box and filter. Then pull the CVT cover off and see what the belt looks like etc. I buy some cheapo brake cleaner at walmart to spray the cvt clean. These things are hard to kill as long as you give'em oil and decent gas. Sounds like the top end is good for now. Some smoking on startup is common. Sounds like the starter might be going out? Let me know if you need any parts. I have extras I have no use for. Plus it gets the wife off my back about the place looking like a scooter shop.
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Post by niz76 on Oct 9, 2014 22:13:02 GMT -5
If your exhaust manifold flange is busted, that's probably the first thing I'd fix as it'll solve a lot of your air/fuel mixture problems etc. Exhaust leak is terrible on a 2t since it leans everything out and that means trouble. Might just solve the power under load probs too. I know you're tight on funds so I have a manifold that I could part with if you need it for like $10 just to cover shipping? let me know....
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Post by yongvx50 on Oct 9, 2014 22:39:55 GMT -5
I shot the video between rain showers when the sun peeked it's head out for part of the day. According to the weather channel it is going to rain for the next 5 days and the covered area where I would be working on it has a Ford Explorer sitting there where Dad and my brother just finished putting an engine in it but they still have to put the new water pump, thermostat, and electric fans on it before it is out of my way. I wish there was room in the basement to pull it in there to work on it but it is jammed packed full of what I call junk. As soon as I can get it on the concrete work pad I'll start taking things apart and find out what all parts are missing or broke that I have not seen yet. Once I have it cleaned up I'll know what parts I am going to need and let you guys know. And thanks for the offers on parts I'll let you know what I need and then we can go from there.
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Post by yongvx50 on Oct 11, 2014 4:43:42 GMT -5
I just found where to get the original owners manual and parts catalog for my scooter. Since it is manufactured by Wangye motors in China I did a search and found both the China site as well as the USA site. The Baccio VX 50 is listed as MF50QT-10D and the Baccio VX150 model is listed as MF150QT-10D The WangyeUSA site has the manuals and the parts catalog for the scooters made in that factory in China. Here is the link if anyone needs a copy of the owners manual for their scooter. Wangye Motors USA Scooters
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Post by jhobe6678 on Oct 11, 2014 4:55:35 GMT -5
I just found where to get the original owners manual and parts catalog for my scooter. Since it is manufactured by Wangye motors in China I did a search and found both the China site as well as the USA site. The Baccio VX 50 is listed as MF50QT-10D and the Baccio VX150 model is listed as MF150QT-10D The WangyeUSA site has the manuals and the parts catalog for the scooters made in that factory in China. Here is the link if anyone needs a copy of the owners manual for their scooter. Wangye Motors USA Scooters hah. With the exception of the front fairing and headlights, this is the exact setup of my 2007. At least it helps in the hunt process. Good find man!
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Post by yongvx50 on Oct 13, 2014 22:59:26 GMT -5
Now that the Explorer is out of the way, I went out a little while ago while it is not raining and pulled the Scooter under the canopy. I pulled the carburetor and torn it down. It was mostly clean. It had a little trash in the bowl other than that it didn't have any gunk or varnish anywhere. The main jet is another story. The brass is tarnished and the inside is oxide green and partially clogged. I have it soaking in carb cleaner right now. I had a time reading the jet size on the thing. Had to use my camera and put it on micro zoom and take a photo of it just to be able to read the numbers. The main jet size from what I see is a size 70 on a Mikuni carburetor. Now sure what size I should have on there. When running properly and jetted correctly how fast does this 50cc scooter go? If it will go over 35mph without increasing the cc's of the engine I got the wrong tags for it and will have to get the right ones. Since I'll be riding in town once I move the roads are under 45 mph with most on the main drag being 40 mph. With the tags I have now I can not ride on any of the roads that are posted 45+ mph. I weigh 265 down from 275. Hopefully I will lose more weigh after my surgery and I am able to get back in the pool.
P.S. I started typing this update at 5:45 pm CDT then the power went out and just came back on a few minutes ago. Had some bad storms around here this evening we are still under a flash flood warning till the morning. Hopefully my scooter isn't laying on it's side again in the morning when I put the carb back together and back on the scooter.
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Post by niz76 on Oct 14, 2014 0:17:46 GMT -5
I've liked the 70 main jet for stock airbox with snorkel in. With the Carb nicely tuned it should probably go 40-45 MPH. Via China speedo. Probably more like 35-38 actual speed via GPS reading. Everyone's setup is different so plug reading is important once u start tuning...
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Post by Sitticuss on Oct 14, 2014 0:34:31 GMT -5
Yeah what niz said.... with the gears on those
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Post by yongvx50 on Oct 14, 2014 2:06:49 GMT -5
There is a question I almost forgot about till now. When I went out and bought some fresh fuel and filled the tank I didn't know about the minimum octane rating that this engine calls for till I found the owners manual for it and read it. Right now the fuel in the tank is 87 octane and has ethanol in it. I am wondering if I need to drain the tank and replace the fuel with 100% gasoline of 91 octane or higher before putting this thing back together and tuning it. Or should I just pick up some 100 octane pure unleaded race fuel and mix it with the 87 octane stuff to raise the octane level to what is suppose to be at and forget about the ethanol that is in the 87 octane stuff? I can always put the fuel I have now in one of the other vehicles that can run the regular unleaded pump gas.
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Post by 90GTVert on Oct 14, 2014 6:29:43 GMT -5
You should be alright with 87 for now. If you ride it and hear detonation (sounds like a rattle/crackle under load WOT usually or as you back off the throttle slowly) then make sure you step up the octane.
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Post by yongvx50 on Oct 16, 2014 2:28:21 GMT -5
You should be alright with 87 for now. If you ride it and hear detonation (sounds like a rattle/crackle under load WOT usually or as you back off the throttle slowly) then make sure you step up the octane. Thanks. Looks like I will not have to worry about the fuel in the tank after all anyway. I put the carb back together and reinstalled it on the scooter this evening. I turned the fuel back on to fill the bowl and to check for leaks. I looked at the filter and noticed that there wasn't any fuel on the filter glass. Thinking that maybe the fuel cap was not allowing it to breath and stopping the fuel from flowing I removed the cap and got a shock, the tank was almost completely empty. Since the fuel was turned off while the carb was off and the fuel lines plugged off wth happened to a full tank of fuel? It was 7/8 of a tank full after I moved it to the work area at the garage door and I have not seen any signs of a major leak on the tank. Hopefully the weather will be nicer today and I can figure out where the full went. I also still have to pull the plug and check it, tighten the bolts up on the exhaust and any other bolts that are loose, check the e-starter, tune the carb since cleaning it and find out where a clip goes that I don't remember removing but must have since it is in my parts bucket and put it and the screw that holds it back on.
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Post by 90GTVert on Oct 16, 2014 7:24:59 GMT -5
Faulty shutoff, tank leak, or someone is stealing your gas. Could be that it only leaks with more fuel in the tank from either a leak above a certain fuel level or I suppose additional weight of more fuel persuading it to move.
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