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Post by gy6girl on Mar 24, 2013 20:38:05 GMT -5
I say you do it every time you get enough motivation to take all those plastic panels off that it takes to get to the the valve cover. D8
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Post by gy6girl on Mar 24, 2013 19:18:07 GMT -5
The scooter I am working on currently is a...
2007 Tank scooter touring de 150cc
High performance air filter
High performance CDI
Coil and cable are new, but normal.
New regular belt
But I don't know anything about the clutch.
I can't get the nut off there, and I have a professional grade impact wrench. All I'm doing is banging up the nut and rounding it over.
The sliders were 12g, but I lowered them to 10g, that made it slower, so I just ordered a new variator with 13g rollers.
I put a 115 jet on there and it was too rich that there were times it wasn't able to ignite the gas from being so rich.
Just a stock carb on there, so I lowered it down to a 109 and runs without a problem.
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Post by gy6girl on Mar 24, 2013 15:48:28 GMT -5
Just to throw up my stats on the subject for comparison...
Tank 150cc with high performance parts - 115 main jet was too much, 109 main jet works great.
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Post by gy6girl on Mar 22, 2013 14:21:31 GMT -5
I have the same problem with the clutch pulley. I got the variator nut off... finally. Only one solution I see, and not the first time I had to do it... Grind that off and just put a new one on there. I have had to drill out, grind with grinders and dremel tools, all kinds of stuff on my scooters. My plan with the nut on the clutch pulley... First take a grinder and get a chunk taken out of the nut. Then with a dremel, I will go the rest of the way down until I almost hit threads. At this time, I guarantee the impact wrench will take it off, because it will crack at the grinded area. Which will loosen it up. Then I am going to replace it with a good old American steel nut!  Yeah! USA! I have done it several times with other parts. Those Chinese screw, nuts, and bolts, are just crap. They skimp on the amount of metal used, and it's horrible steel. |
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DC CDI
by: gy6girl - Mar 22, 2013 14:10:14 GMT -5
Post by gy6girl on Mar 22, 2013 14:10:14 GMT -5
From your last post previous to the above you said this: So how did it go? Alleyoop Not there yet. Will try it today, but it did turn chilly on me. |
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by: gy6girl - Mar 22, 2013 3:12:15 GMT -5
Post by gy6girl on Mar 22, 2013 3:12:15 GMT -5
Thanks.. Good reads.
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by: gy6girl - Mar 20, 2013 20:50:46 GMT -5
Post by gy6girl on Mar 20, 2013 20:50:46 GMT -5
Yeah, who you kidding?
You'll answer my question.
Ok.. So I went back to the place I bought the jets from.
This place is actually a go kart track that has been open for like forty years. They also have a garage there where they work on anything with a small engine, but they mainly do those dune buggy things. They use the same carb as the scooters do.
When I brought them back, he said, "Too big for the scooter huh? That size runs great on the buggies."
He then said that that's pretty much all he had except some others that aren't marked.
So he grabs two for me, looks at them, then he says these are about a 109. I say, "that will work."
I pull the old jet off the carb, of the new scooter.
I look at the jets and compare them in all types of light, even with a magnifying glass.
If I knew one was bigger, I would guess the new one, but really I can't tell.
The new one does look a little bigger, but if it is, it's not by much.
As I looked at the old jet, I see there is a "1" above the screw slot, and a "04" below it. So maybe that is a 104 jet.
So, could you tell the difference between a 104 and a 109 by looking at it?
Any way, that is what I did and it runs great. But it ran great before hand.
Tomorrow I will try the scooter in question.
Now I left the 40 pilot jet on there, because it idles so nice.
Please tell me why this is too much, or if you have already explained the jets , can you point me to a link?
Please alleyoop, I want to hear what you have to say.
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by: gy6girl - Mar 20, 2013 11:13:08 GMT -5
Post by gy6girl on Mar 20, 2013 11:13:08 GMT -5
i have been reading all of this tread and what i have come up with is the cvt have you check the belt at high rpms it will climb to the top of the variator and could be slipping and also when the belt is hot it will streach out it maybe a long shot but it does make sence My other two scooters, I have worked on the transmission and replaced belts, variators, rollers, etc... but this scooter never had any of those problems, so no.. I have never looked into that. I have thought about that though. I have taken the cover off looking for the oil leak, but I have never checked to see if it's slipping or anything. Oh... and the oil leak is not there. |
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by: gy6girl - Mar 20, 2013 2:03:11 GMT -5
Post by gy6girl on Mar 20, 2013 2:03:11 GMT -5
It's no big deal. You didn't really offend me. I was playing mostly. I will give what you say a try. And you might be right. The person before me might have changed the jets, but I don't think so. That's what I have been doing with it so far. Fixing everything the guy before me did to it. You should see how he put the high performance air filter on. But first, look how I put mine on...  That's how I did it. That's how I put a high performance component onto an engine. How he did it, was to cut the end off of the stock plastic air filter box and use that piece as the extension, with hose clamps and some silicone. It's really ugly. So if a person puts something like that on there, do you really think they would have changed the jets? I don't think so, and the jets are corroded. They are not shiny. But I do know that a 115 is too much. That's something learned. I also know that the jet that is in there is smaller. So I would say try a 110 or something like that. What ever they have. We'll see how much those microns of differences can do. |
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by: gy6girl - Mar 20, 2013 0:28:51 GMT -5
Post by gy6girl on Mar 20, 2013 0:28:51 GMT -5
Well you read but did not listen... And there is where you are wrong. Telling me that I didn't listen gets me riled. Because that has negative cogitations of being simple, and that I am not. I listened to you, I took your advice. I tried to up-jet the carb didn't I? Now when it came to actually buying the jets, I have you, a person I have never met before and have no measurement of validity of your suggestions... Or this person who I am standing right in front of and that has helped me before. Technically I went with the logical answer. The answer by odds I should have taken. It's just that the logical answer doesn't always mean the right answer. The only thing you can say is that I did not take your advice, I took another persons and his was wrong. You can't say that I didn't listen... I listen. Now... The jet that was in the scooter only has the markings of "14".. I think. It was something like that. Something that didn't match the rankings of the main or the pilot jet, I know that. I also know that the one that was in there was smaller. I will go tomorrow and see what other jets they have and pick out something closest to what you say. But if they don't work... I'm so going to let you have it.  Thanks for the help. I am a learner, and I listen. Always. |
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by: gy6girl - Mar 19, 2013 21:48:51 GMT -5
Post by gy6girl on Mar 19, 2013 21:48:51 GMT -5
I did read what you said... and I remember everything anyone ever says to me... I'm a freak that way.
I also asked the guy that works on these things every day, at the local shop, and he set me up with what he uses.
So 110 or 115, how can that matter? I don't know what the one is that is on there, but by looking, the difference is barely anything.
So how much difference can "15" be? We're talking microns here. Is it that sensitive?
I left the idle jet in there, because I always thought the scooter idled too high to make sure it stays running.
With the bigger jet I was able to lower the throttle and the idle screw is turned maybe a quarter of a turn, and it stays running nicely.
I like how it's idling now.
I'll play around with it.
Maybe I will go back and see what other main jets they have and try one a little smaller than the 115, but bigger than what's in there.
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by: gy6girl - Mar 19, 2013 20:12:00 GMT -5
Post by gy6girl on Mar 19, 2013 20:12:00 GMT -5
I am a heck of a mechanic, Carbs, Motor, Trannies, CVTs etc.. and for the life of me I am trying to picture how a blown ring in a scooter would spill oil all over the motor and NOT create a cloud of smoke at any speed. Now if it was a Valve leaking it would smoke only on initial starts till it warmed up. But a blown ring you would not let people behind you see the road. Alleyoop Good point. But I was thinking more of the reason it's bogging down more than the leak. Here's one for you.... Ok. Two of my scooters have the HP air filters on them. My new scooter had it already, and I put one on my troubled one. I have heard over and over how you suppose to up-jet if you use one of those filters. Well.... I went and bought two sets of jets. Two main jets that are 115. And two idle jets are 40's. I was going to put them on the two scooters. I started with my new scooter, because it flies! I put the new jets in it, made some adjustments, and took it for a ride. It was worse, and I mean way worse. Lost about 10mph, and it had the hesitations. Almost like what my other scooter is doing. So I changed back the main jet, I kept the idle jet, and it started zooming again. I think it was flooding the carb. Maybe it's altitude versus the local gas, that I don't need to use bigger jets. I don't know. All I know is it made it worse. When I can, I am going to pull the jets off the Lance scooter and see what's on there. I might try going smaller just to see. |
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by: gy6girl - Mar 19, 2013 14:02:32 GMT -5
Post by gy6girl on Mar 19, 2013 14:02:32 GMT -5
Wow.. ok.. a lot to take in here. Thanks for all the help everyone. First... You can see everything I do here on my blog I started recently. Just for this reason. www.scooters.randirain.comHere is a link to the scooters I own... www.scooters.randirain.com/category/scootersHere is some pictures of the engine in question... www.scooters.randirain.com/2013/02/high-performance-air-filter-2As you can see, I keep a pretty tight ship. All hoses are in good standing. One of things I do for a living is build things that don't exist. I am an engineer and can make anything. So when I do something, I do it the right way. The coil and cable are brand new. Now they are not the high performance, but they are brand new. The CDI is brand new and high performance. But like I said, that didn't fix the problem. I am going to try the oil thing. I have covered all the obvious stuff. It's something inside. I have been kind of thinking it was a blown ring. I think the hesitations are the lack of good compression. I just got another scooter that I really like. The motor is in great shape, it's just the body is beat to . So I am going to fix it up, and ride it, then just break down the other scooter completely and rebuild it. I really like the scooter.  |
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by: gy6girl - Mar 19, 2013 1:50:42 GMT -5
Post by gy6girl on Mar 19, 2013 1:50:42 GMT -5
Nope.. Wrong again.
I'm way ahead on you on this.
I've done all this stuff.
I yanked all the "clean air" stuff out of there and vented the gas tank.
So that's not the problem.
The tank is low on the bike and it uses a fuel pump, but that works fine.
It's not running lean that's 100% sure.
You don't get 40mpg on a scooter with it running lean.
It's blowing through the gas.
That's why I didn't change out the jet.
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by: gy6girl - Mar 19, 2013 1:09:04 GMT -5
Post by gy6girl on Mar 19, 2013 1:09:04 GMT -5
I like that idea on the vent hose. I will do that and I have an extra fuel filter right here.
But today was the first time I plugged it up. It hasn't been plugged up this whole time.
Most of the time it was connected to the stock air filter box.
But recently I bought a high performance air filter, so I had no where to go with it. I had it shoved down into the run-off tube.
I figured that was still what was leaking, that's why I plugged it.
I don't think that was it. It's still leaking some where.
As for it leaking on the valve cover, I don't think so.
For one I had it off adjusting the valves and it looked fine.
I know it looked fine because one of my other scooters was leaking there and I did have to replace it.
So it was actually one of the things I checked first.
As for the crank seal, you may be closer with that.
That's the only place I can think it might be.
As for the engine running...
Right now, you can start it cold without giving it any gas.
Just hit the starter and it will turn over instantly.
You will have to eventually give it a little gas to keep it going.
Rev it a little and let it warm up, it will idle just fine.
Out on the road, it runs pretty good. Has decent pick up and you can get going pretty fast. Not as fast as my other scooters, but you can get it up there.
But then once it starts getting hot...
Then it starts acting weird.
For example... Today I was going along at top speed, and then going up a pretty steep hill. I had the throttle wide open.
As I was going up, and bogging down, I could feel hesitance in the engine. Like some grumbles.
Then, it does it's thing.
It stalls out. All the sudden, no power.
The engine is still running, but no power.
So you have to let off the throttle and let it idle for a second or two, then you can give it some gas to get some speed up again.
It does this every time it's wide open. Whether it's going up hill getting bogged down, or going down hill at top speed.
It still stalls out.
And after that it seems like it's lost power all the way around.
Then let it set and cool off, it's back to starting up first try and working fine while not hot.
Go figure?
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