Post by nitroman666 on Jul 12, 2011 23:47:05 GMT -5
Hello, First post and a Noob to Scoots, but not mechanics. I have a TaoTao 50 with 1300Kilometers. I was driving it just fine one day, and the next was off. Here is the story. It wouldn't Idle, so I kept it running. It ran just fine if the RPM's were up, but if they lowered near idle, it would die. To restart the engine, I had to give it full throttle to rev over idle rpm. Then it was fine while it was running at about 20 mph. It would hit 45 still, no lack of power. One time, It did stay idling for about 30 seconds, then died. So, For fact, The compression is good, cam/valves are properly operating, New NGK plug that is properly gaped, and has a small spark, not impressive, but can see a faint one. I have sprayed starter fluid directly into the intake with no fire still, It did try it's hardest and started to go at full throttle, but couldn't get up enough rpm to start. Carb is getting fuel to it as well. I have heard that the CDI can cause this. Any help would be appreciated.
Post by kellyetheredge on Jul 13, 2011 8:20:47 GMT -5
ditto here...my taotao doing almost the same thing...getting harder to start. Takes off fine for 10 secs then dies. Start again and gradually get up to 15mph then sometimes it seems to "clear" and the scoot runs fine. I was think new carb...its still under warranty...but I gues the cdi could degrade right? Gradually ...any help would be appreciated
Post by nitroman666 on Jul 13, 2011 16:56:52 GMT -5
OK, Compression is at 90psi at idle throttle, and 120psi at WOT. Spark plug is gapped at .028-9 in. Pulling the carb off to inspect at the moment. ALSO, Drained and replaced fuel. Would there be a reason for that much of a compression change with throttle open/closed?
Post by nitroman666 on Jul 13, 2011 17:46:17 GMT -5
Ordering a new no Rev CDI and "perfomance" coil today just to be on the safe side. It's worth the $35 to find out. If the CDI is bad, but still produces a spark, it may be firing at the wrong time i.e. too far advanced or retarded.
I replaced a CDI on a Tao Tao clone a while back. It would start and run and then die and eventually not start at all. After cleaning the carb twice and replacing the fuel filter I eventually tried a new CDI and that fixed it.
Dave Qianjiang LS49 2T zip clone 72cc BBK (work in progress)
Post by nitroman666 on Jul 13, 2011 22:49:22 GMT -5
I do appreciate all of your suggestions. I will report back after the parts come in. It's nice to find a forum that isn't full of nonsense, I.E., you ask a question like "My 50 won't start" and you get this response "Hey, check your tire pressure and try to push it on an incline to make sure that the ignition is getting a good spark" Again, thanks.
Post by kellyetheredge on Jul 15, 2011 20:28:22 GMT -5
Just had about the same problem...brand new TaoTao 50cc......Starting running crappy....got worse and worse....eventually it would not start.....adjusted valves....runs like a champ now..better than when it was new...2 weeks ago
kevin55950: I had a koso Sunworld (low quality) and I needed 2 to make one. Cheaper to buy a good one first
Nov 22, 2013 20:02:03 GMT -5
raelhi: i bought a 150cc 157QMJ engine for 80 bucks, it has compression but the problem is the starter motor housing is cracked, no cvt cover and no shroud
Nov 24, 2013 8:35:38 GMT -5
raelhi: this is the engine: http://honolulu.craigslist.org/oah/mcy/4170079976.html
Nov 24, 2013 9:08:43 GMT -5
raelhi: how do you remove the bushings on the mounting bracket?
Nov 24, 2013 20:40:57 GMT -5
90GTVert: Sometimes you can use a bolt, nut, washer, and socket to remove bushings. Put the bolt through a nut that is small enough to pass through with the bushing, so bushing diameter or just smaller. Put that through the bushing. On the other side, put a socket..
Nov 25, 2013 8:14:47 GMT -5
90GTVert: large enough for the bushing to pass into it, but able to line up with the mount so it has something to be pulled against. Then you'll prob want a washer on the end of the socket nearest the end of the bolt. Then a nut. Tighten and it should pull out.
Nov 25, 2013 8:16:15 GMT -5
90GTVert: Pay close attention as you do it so nothing gets crooked and you don't damage anything. Bolt and nut could actually be on either side, could use a threaded rod and 2 nuts instead of a bolt. As long as it's all braced it can only pull one way.
Nov 25, 2013 8:19:41 GMT -5
twowheelinjim: I've really grown to appreciate these scooters. They respond like a furry pet when given some attention. And, when neglected, they let you know... I've already run into the classic hard starting issues. It is usually caused by a component
Nov 29, 2013 10:25:08 GMT -5
twowheelinjim: like oldsman stated. My 50cc scooter liked the throttle cranked several times allowing the accelerator pump to squirt a bit of fuel into the intake and she started right up. That's how I prime my old Harley. I bet the two bikes were having a chat one night
Nov 29, 2013 10:29:01 GMT -5
twowheelinjim: and that's where the scooter picked up this habit.
Nov 29, 2013 10:29:30 GMT -5
Tony: heyo mech190 the goodyear blimp just droned its way directly over me head... heading over to you !!!
Nov 29, 2013 16:55:35 GMT -5
raelhi: is a gy6 50cc rectifier the same as a 150cc rectifier?
Dec 5, 2013 17:05:12 GMT -5
quikjake: hey can anybody please tell me what bulb size is in my 2007 triton r4?
Dec 6, 2013 3:18:08 GMT -5
quikjake: is it h11? or h7
Dec 6, 2013 3:18:50 GMT -5
90GTVert: My Tritons are both a few years older, but they're BA20D. I assume the newer are the same.
Dec 6, 2013 9:52:17 GMT -5
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