96cc Strada RX8 (1E40QMB-A)

[90GTVert]

When you set your float height too high, it doesn't stop fuel from entering the bowl and it will overflow. You wanna take the bowl off and turn the carb upside down. Adjust the float height so it's level with the base of the carb.

For future reference, if anyone suggests something that you don't completely uderstand, ask. As you just found out, you can cause more harm than good by blindly adjusting things.

So it runs worse with the filter off or it runs worse when you are choking it? If you are letting more air in (intake off) and it gets worse, that would indicate a lean condition. If you are choking it and it gets worse, that would indicate a rich condition.

[drawkward]

I had the filter off. It seemed to run better. I plugged up half of the carb, and it slowed to almost a complete stop. I'm guessing it's rich. I'm going to step it down to the 80 again and see what happens.

Yeah I know I should have asked, but I didn't think I would get a response quick enough. I did look it up before I adjusted it, but the directions were a little confusing for me. I'm still a little confused. When I turn it upside down, and the float falls to the "full"position by gravity, is this how I should adjust? It also sits at an angle when it is in the full position (closed) Which part of the float should be even with it? So this is my plan, based on what I think needs to be done with it...

I'm going to hold the float pin in, and bend the float bracket to make it so that the highest part of the float would be even or just below the top of the float bowl rim. (See I don't understand, so I can't really explain, lol). Let's see how this goes...

[90GTVert]

This is from my carb cleaning how-to...

" Now is a good time to check float height by measuring from the bottom of the carb to the bottom of the float (which are both kinda the tops since it's held upside down). Vento wants a 12-14mm float height.

"

Look for a flat area, like the line across the float in that pic or the top part that isn't angled. Try to get them parallel (more accurate than level) with the carb's base.

[drawkward]

Rewrite: Still can't figure this out...

The vari is not slipping, btw. I guess I was just getting weird clutch grabs. Maybe power spikes from the engine?

[drawkward]

Update: So If it sounds like my shit was acting a little crazy, it's cause it was.

First - Got the float height fixed. Thanks Brent.

Second - Started getting pretty pissed off that the needle jet kept falling out of place everytime I turned it over and I had to reset it everytime. I then realized that it shouldn't be doing this, as someone would have mentioned to make sure that my needle jet didn't fall out of place. I then remembered a little tiny washer I had sitting on my work bench that I had no f-in clue as to what it was for. I put the washer back on. I am pretty certain that this was causing a big problem with the tuning. I got it straight and started her up. She ran good, but was lean. I could tell because it was bogging on WOT. I put my hand covering about half of the inlet and I could just about rev it all the way up. Man I wish I had a manual choke... So yeah, I'm going to install the stock airbox real quick to see if it solves my problem. If not, I'll bump up to 90 again and hope for the best.

Man I'm glad I figured this out cause my grams was getting pretty fuckin pissed that I hadn't gotten it fixed yet. She told me it was my fault it wasn't working cause I just wanted to "soup it up". She also told me I was obsessed with it. I lied and said I wasn't .

[90GTVert]

Sounds like you're getting somewhere now. Definitely helps to have the needle installed correctly.

If you forget where anything else goes, have a look here...

49ccscoot.proboards.com/index.cgi?board=carb&action=display&thread=363

[drawkward]

Thanks. I remember reading through that a while back when I first started opening my carb. Good to have a refresher... I'm a little forgetful sometimes.

Anyways, what was I thinking about? Oh yeah...
I put the 90 main jet in and rode it around. It will start off - then start to bog, but not cut completely. I think I'm getting it closer to being in tune, but maybe still too lean.

Here's another thing... When I start the engine it will idle at a given RPM; let's say 2000 (I have no idea what it really is, but to help explain). Now when I give it gas and it bogs, I let go of the gas and let it idle. After doing that it seems to be idling somewhere around say 1000 rpm (once again, I have no idea the real RPM, just trying to explain the difference). Then if I cut the engine, and let it sit for a moment, and restart it... It will idle at the 2000 RPM again. A little confusing, I know.

Is this indicative of too small a main jet, or would this indicate that my float height is not correct?

[drawkward]

Ok so I got the new jet's today. Got the following: 95, 100, 105, 110.

Installed the 100 right away and it was running great, compared to how it was before. Almost about the same power as the 50cc, maybe a little more in the mid range. Went for a little ride with the 100 in and decided to come back and put the 105 in, because it still feels like it is losing power after the initial take off. Went to grab the 105 and it wasn't in my pocket. I then remember that I left the little envelope ON THE FLOOR OF THE SCOOTER. Well, I freaked out and went out looking for the envelope. Phew, found it right down the street... With only the 90 I had before left in it. FUCK. Been looking all over for the last 2 hours and I can't find them. I can't stop messing this shit up. Atleast I can get around on the scooter now without worrying about it overheating and seizing. Guess I'm going to have to order ANOTHER set of jets. FML.

Update: found the 95 after another hour worth of looking. Still missing the 105 and the 110. Did a little test to see how hard it is to spot them. Threw the 95 about 10 yards in front of me while I was looking, and SAW where it landed. Turned around for a minute and went back to find it... Almost lost it again! These things are impossible to spot. I got extremely lucky finding the 95. It was in the middle of the road and the sun was relecting off of it into my eyes.

Well, treatshq also got back to be saying they would exchange for the 6mm if I sent mine back. Guess I can do that and wait a few weeks.

[90GTVert]

Well.... sorry you lost the big jet... but now you know you are getting close.

[2strokd]

Ahh, sh!t, that sucks! I get all anxious sometimes too and forget little important things. Godda slow down man. Just get ya a set of torch tip cleaners and gently ream an old small useless jet out to about a 102, or 105...You can use the closest size to what you need as a "template". It sounds ballpark and it is, but its worked for me in a pinch. Then you can say you have custom jets, lol

[drawkward]

Torch tip cleaners? I just looked it up. They don't look very expensive. Where can I pick one up, and how do I use it? I was going to just get some bits to drill them out with, but couldn't find the right sizes. Thanks for the tip!

PS: I just ordered a 10 piece Stage6 set of 6mm Dellorto jets ranging from 98 to 120 from SPMoto. Should be here sometime next week. Oh and it comes in a nice carrying case, making it harder to lose them.

I also got a shipping quote from PMTuning in the UK. About $18.25 to ship to the US. Think I might order those new bars today too... With the adapter and the bars, including shipping.. Should be around 60 USD

[2strokd]

Harbor Freight or any place like that should carry em. You just ream the jet out to your size.
The torch tip cleaner is like a small file.

[drawkward]

Picked up a set of torch tip cleaners. Worked the 95 to be bigger than the 100, but not much. Helped a little, but I'm not sure how much, because...

I got a seize today while riding the scooter. The engine cut off while going full throttle, and when i stopped and pulled over, it wouldn't turn over. I pushed it home (over 2 miles). I waited for it to cool down, and it started right back up. Not sure how much damage was done. Sucks that I HAVE to ride the scooter. It is seriously torture for me every time I go out, knowing I'm running so lean. I'm thinking I might have ruined this new cylinder. It's running ok now, just feels like the jetting is off still, and maybe a loss of compression. At least I know where I can get another one...

[90GTVert]

If you're really worried about it, aren't you using a UNI filter or am I mistaken? If you are using an open filter, go back to the stock airbox and jetting you have should cover it. It's usually easier to get it in tune with the stock airbox anyway. If the scoot starts back up and runs alright, you probably didn't do anything too serious most likely. It's not good for it, and you might kill it one day rather than soft seize it.... but for now you're still OK. This sorta thing kinda comes with the territory. Shiftless just went through something similar with his and opened it up to find everything in good condition. I seized the 99cc so many times you wouldn't believe it and didn't really hurt it other than some scuffing. I'm in no way saying keep riding like this, just saying it's not too late to straighten it out.

[drawkward]

I tried going to the stock air filter before, but it seemed to be too rich with the stock, and too lean with the uni. I'm also not liking the sound of the uni filter too much. Way too loud. I'll give it another shot tomorrow after work.