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Post by riotstar on Oct 17, 2005 19:01:33 GMT
Hi..
I've got a bt50qt-11, it's been fine the past couple of days. snipped the pink wire, all fine, took out the brass screw, all fine, couldn't adjust the needle cos it didn't have any notches and just a fixed washer at the top. Bike still did 35mph on the flat, better than the previous 25mph. Didn't want to run at all yesterday so I put the brass screw back in and it was fine, albeit slow again. left work today and the bike just would not start at all. spent hours trying to start it, but nothing. nothing from kick start or electric. it did start once, but there was just no power there, even at full throttle the bike wouldn't budge. any ideas?
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Post by baotian on Oct 17, 2005 19:51:31 GMT
the only advise i can give you is to check the fuel, you would be surprised how many people do that  , and check the wiring as the connections can become lose the connections are under the front cover) also try connecting the pink wire again |
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Post by chcknugget on Oct 18, 2005 16:08:15 GMT
It sounds like your valves may need adjusting. Can you describe anything else? How old is the scooter?
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Post by riotstar on Oct 19, 2005 18:00:35 GMT
valves?
It's only about 3 weeks old. I've only just got it registered and done about 25 miles on it. I tried re-connecting the pink wire, but nothing's changed. I checked all other connections and I can't see anything wrong. I filled it with petrol the other day and it wouldn't start, so had to wheel it back to work. Put the brass screw back in the next day and it was fine, until I got about a mile up the road and it just died on me. the needle in my carb is smooth, without notches and just one fixed washer at the top. Someone suggested putting on a really tight washer just below the fixed one as it would allow for fuel in, and will probably start, but I'm not sure as I didn't touch this in the first place. the bike now is in the same state as when I got it. brass screw present and pink wire re connected.
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Post by hypojam on Oct 19, 2005 18:03:25 GMT
Check the valve gaps! sounds like your losing compression!
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Post by riotstar on Oct 19, 2005 20:22:11 GMT
thanks...just one thing...erm...what and where are the valve gaps?
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Post by hypojam on Oct 19, 2005 20:27:51 GMT
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Post by chcknugget on Oct 19, 2005 21:06:31 GMT
yeah, if my valve gaps were just a little bit off, it would take 15 minutes to start it, and when it started it would have no power and die after running about a minute.
A valve gap feeler guage can be bought at any auto store (in the US) for about $3. All you need is that an adjustable wrench, a 10mm socket, and a phillips head screwdriver!
It's easiest to get to the valves if you take your seat and seat support right off. It is held on by 4 10mm nuts and two phillips head screws. I know this, because I had to adjust my valves without a feeler guage, and it took many tries to get it right! It only takes me 15 minutes to do now, but they took a lot of adjusting after I put the 80cc kit in.
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davehuge
Regular
My other scooter's a 1000cc triple! 100% British Beef
Posts: 41
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Post by davehuge on Oct 19, 2005 22:12:47 GMT
Before you check the valve gaps, check the simple things first....
Have you got a good spark at the spark plug? This will rule out any electrical problems.
Is there fuel getting to the carb?
Does it feel like you have good compression when you push the kick starter down? If yes then your valve gaps are probably ok.
Good luck!
Dave.
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Post by chcknugget on Oct 19, 2005 22:45:36 GMT
Before you check the valve gaps, check the simple things first.... Have you got a good spark at the spark plug? This will rule out any electrical problems. Is there fuel getting to the carb? Does it feel like you have good compression when you push the kick starter down? If yes then your valve gaps are probably ok. Good luck! Dave. Those are good things to check! The compression will be hard to tell from the kick start. When my valves were bad it kicked over exactly the same as when they were good. There are cheap tools called compression testers that go into the sparkplug hole to accurately tell your compression. I've been meaning to get one for a while now! |
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Post by riotstar on Oct 20, 2005 16:32:06 GMT
Ok Thanx. Weird thogh cos after 3 days of nothing, my scooter started first time today and I managed to get it home, albeit at 20mph. Think it'd be a good idea to have a mechanic have a good look at the whole bike tomorrow. rear brake light's always on too!Thanks for all your suggestions.
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Post by riotstar on Oct 22, 2005 17:42:18 GMT
duuh...it's fixed. the needle in the carb, well there's like a white clip that sits on top, or summat? well it shoulda been underneath, or maybe other way round. Whatever it was it was put in wrong way round, and basically flooding the engine. i dunno..technical stuff but literally, a 2 second job. ;D  |
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Post by chcknugget on Oct 22, 2005 19:36:31 GMT
I'm glad to hear it's fixed!
Chinese scoots are not cursed if treated right!
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