I've had a loud whining when rolling. By the time I get up to 45 it's screaming. As it gets hotter, it gets a little quieter. I don't know what it is, but I've been suspecting the belt. It's not very old, but it was a cheap one that came with the cheap drive kit, variator, clutch, and belt. It could be it. I'll buy a new belt in a couple months and replace. Nothing I can do about it right now, so I'll wait to get in there. Floor work is tough these days, I'm never too sure I'm going to get back up!
When I first got this Helix clone 4 1/2 years ago, I was getting 70mpg. It has slowly decreased. After the tadoo with the air cleaner last week, I guessed that makes sense, the more it got starved for air, the mileage would go down. The shop just removed the air filter, so I've been running with none. I assumed my mileage would increase. I just filled up and checked it, 56mpg! What can I do to increase my mileage? He went through the carb, so that's good. Why would I lose 15mpg?
I've had dirty air cleaners on everything I've ever owned, and none causes the problems this thing did, to the point I couldn't ride it. I've ordered a racing air cleaner that allows maximum air flow. The one that was on there was a K&N type with the oil saturating the cleaner. Never liked those things, by nature, they restrict air flow. Running without one now, but it's not dirty here, it will be ok for a week.
The one on the right came out of of it. The one on the left is a new one I bought off eBay a couple years ago. They don't look quite the same. After much ado (I lost the mixture screw behind the starter) I got it back together. It starts and idles just fine. But when I go to go down the road, it misses, and the hotter it gets, the worse it gets. I don't know what's going on. I'm going to have to take it to the shop and get raped.
Well, I just took the carb apart, everything looks good. Diaphragms are intact. No crud, passages and jets are clear. I'm wondering if the auto choke is working properly. I have a new one, maybe I'll put that in. You ever seen one fail? How did it behave?
Good to hear, thanks. It doesn't make any weird noises, so I don't think it's falling apart yet. Supposed to be less humidity this weekend, I might get some wok done on it, just to hot to do anything outside.
I've got about 11,000 miles on my Helix clone. Last spring I had a fuel problem. My "diagnosis" of the fuel pump showed it was good, but I messed up, it was the fuel pump ll alone. But since I thought the pump was good, I continued. Frustrated, I went down to the local scooter guy and had a chat. He said I might need to adjust the valves. He showed me the little butterfly adjustments. So I went home and messed things up. It's run good, except for a few failures, but it ran good and strong. It ran a little lean, but it ran good. The front butterfly (intake?) was almost all the way to the back, so I put it in the middle. Well, that didn't help. So I finally figured out it was the fuel pump, so I replaced it. Got it running, but it's run like crap ever since. If I warm it up and let it idle, it runs best with the front butterfly in the middle, but it foul plugs and gets terrible mileage. If I put it back where I found it, it lacks power and runs like crap. The other day I cleaned up the plug and put the butterfly almost all the way back and went to the park, about a 15 mile round trip. It was weak but ran, for a while, by the time I got home, it died right at my front step. I think I've really messed up the valves. So I'm going to order a new plug for it, think I'll take the carb apart and clean it. I should take a look at the valves, but I've never done that kind of work on such a small engine. So what do you mechanics think? Think I f'd up the valves?
The lines are good, like new. It's the fuel pump. I made a mistake when diagnosing, I checked the wrong line for vacuum. There's good vacuum at the pump, it's just not drawing any gas. Got a new one on the way.
I put that K764 on and just forgot about it, I figured I'd get at least what I got out of the K320. Just glanced at it the other day, and I thought ? I've got 1600 miles on this tire, and I have to start planning on getting another one. This thing didn't last at all. I think I'll try a Shinko next.