Clinician
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Post by jonas66 on Oct 24, 2012 12:16:05 GMT -6
No, the electric starter DOES work, sorry for being unclear. It starts reluctantly in the morning by the starter, and takes a little patience getting it going. It's also still choppy when I start driving, but it seems like as it warms up it's top speed increases, and it becomes a little less choppy. I think it needs another small adjustment to the fuel ratio, but if these issues suggest anything else to you, I'd appreciate the feedback.
Even before, the electric starter was going. The problem was that it wouldn't start the engine.
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Post by jonas66 on Oct 23, 2012 11:08:08 GMT -6
Yes, it occurred to me that the carb was not a new shiny thing. I'm not sure if they put in a used one or what, but the end result, this only adding confirmation, is that the shop won't be getting any more of my business, because they're pretty incompetent, and not very honest. I had not wanted to this time around anyway, but I was desperate and they're right by my office.
I was able to make adjustments to the idle, and tweaked the fuel ratio, and it doesn't seem to have a problem starting anymore, at least. I wasn't able to get it up to speed on my road to see if there was still the issue at top end yet. Going to drive it home and see how it does, and make further adjustments from there when I have time to tear it apart and put it back together again. At the very least, I know how to access it, and can put it back together without breaking anything. Small victories . . . .
I don't know when the last time there was a valve adjustment. For now, I'm going to tackle the fuel ratio angle, and go from there.
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Clinician
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Post by jonas66 on Oct 23, 2012 6:45:57 GMT -6
Well, I got the seat out so I could take a look at the engine, haven't done the spray bottle test yet, but I did take a couple of pictures for reference. FYI, no, the scooter does not have a Tach. View of the carb.  Here's the hose that is hanging loose. Not on the carb, on the block in front of it. I don't know if that's how it's supposed to be or not.  |
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Post by jonas66 on Oct 22, 2012 12:23:02 GMT -6
Thank you for the pictures, they are really what I was hoping to find. As a note, when I was moving it into a garage I saw a puff of smoke come from the side and found a loose hose end, so I'll also make sure that everything is connected properly. It may be a day or two before I can work around my schedule, but I will see what I can do about making those adjustments.
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Post by jonas66 on Oct 22, 2012 11:06:45 GMT -6
Thanks. I'll take a look at that section and come back with more refined questions. I did notice a recommendation to purchase the Haynes manual for Chinese scooters. Is that a good place to start?
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Post by jonas66 on Oct 22, 2012 8:00:14 GMT -6
Hello, I am new to this board, but as I've been googling my particular scooter problems I keep stumbling across links, so I thought this would be a good place to start.
I have a Roketa MC-17 150cc Sicily scooter. I have very little experience at self-repair of any kind, but the shop I was taking it to is, unfortunately, staffed by very sloppy, unprofessional mechanics who do not seem to fix the problems, and usually add one or two in the process.
Here is the background: My bike was left sitting in a warehouse for a week or so because we had to move on very short notice. When I went to start it up, it would start fine but upon throttling would immediately die. I took it to the mechanics, who looked at it and decided that it needed a new carburetor, as the previous had become clogged due to the ethanol content of gasoline. They replaced the carb, and replaced the stator that they said had gone bad (this last without my authorization).
I got the bike back and drove it home, and it was apparent on that drive that there was some hiccupping of sorts as I approached the top speed, and it would not go as fast as it used to go. (45mph, used to be 55). It also had the idle screw set so far out that without throttling at all the bike would go forward at least 5-10 mph on its own.
The next morning, and since then, I've had a lot of trouble getting it to start. Starting off the ignition switch does not work, I have to kick start it to get it to do anything initially. When it does start it is very cold, will die multiple times, and again if I over-throttle it dies. I can, eventually, get it to start moving, and then it runs very choppy for a while, and even when fully warm it still stutters a little, more so at the top speeds.
Searching for answers, it seems like there's a number of things it could be, but the likely answer is that the carb needs tuning. I was hoping I could get some troubleshooting, and potentially an explanation on what I can do to start fixing this sort of thing myself. But like I said, I have next to no experience with self-repair, so I'm sort of starting from scratch, and I don't know where I can find any good manuals to help me.
Any help would be greatly appreciated. I don't want to give the mechanics any more of my money, and there are not a lot of options in my town.
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