http://autos.groups.yahoo.com/group/Chinese_scooter_forum/ Asian Scooters "R" Us Sun, 22 Nov 2009 14:41:03 GMT kenny martin http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5352 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5352    Atta Boy Chris, When I was uncrating 50cc scoots. At a shop as a job.  I often resorted to that action when a stubborn qmb would not start There is Sun, 22 Nov 2009 09:28:59 GMT Dave http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5351 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5351 Hey Chris! Why don't you join the other forum? It's cool because you can post pics and it's busier so you get faster replies. Sun, 22 Nov 2009 07:49:27 GMT Dave http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5350 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5350 I have fiddled and fiddled with a couple of scoots for hours before with no luck and after exhausting all other means, I finally replaced the carb and Voila! Sun, 22 Nov 2009 07:06:25 GMT cdulack30 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5348 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5348 Hey Dave, Im in Texas so thats out the window. I wouldnt be having this problem in LA with the warmer weather. Im going to figure this out tomorrow. There is Sun, 22 Nov 2009 05:55:19 GMT Dave http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5347 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5347 You say there isn't enough vacuum? A tight valve will cause that as it will cause a lack of compression. I wish I could spend an hour with your scooter. I Sun, 22 Nov 2009 05:40:23 GMT cdulack30 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5346 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5346 I was almost unable to get it started today. I planned on riding to my shop to make these adjustments. As I sat waiting for the starter to cool a bit I thought Sun, 22 Nov 2009 02:33:38 GMT Dave http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5345 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5345 ... ____________________________________________________________________ Sparky, I agree a feeler gauge is best but if you have no feeler and one of the valves Sat, 21 Nov 2009 15:06:06 GMT Sparky Alex http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5344 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5344 The correct valve lash settings for the 150cc GY6 engine are .003" for both valves when the engine is cold. (.002 for the 50cc 4 stroke) NEVER adjust valves Sat, 21 Nov 2009 14:06:40 GMT Dave http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5343 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5343 Make sure your idle mixture screw isn't vibrating loose. They will do that sometimes so you have to stretch the spring on the screw or put a dab of high-temp Sat, 21 Nov 2009 14:04:06 GMT Dave http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5342 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5342 ... ___________________________________________________________________ No. .5mm is too big. The gap is .05mm or .0197in. (.002) Anywhere from .002 to .004 is Sat, 21 Nov 2009 08:04:32 GMT cdulack30 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5341 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5341 Hey Dave, I'll first buy a new NGK and see how it acts. I think a valve lash adjustment would be a good idea too. Thanks for the pics. Is the .5mm gap the size Sat, 21 Nov 2009 07:19:52 GMT Dave http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5340 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5340 ... _________________________________________________________________ 2 1/2 turns out is a good starting point on the screw, but it may not be the "sweet spot" Sat, 21 Nov 2009 05:26:34 GMT cdulack30 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5339 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5339 I hate to say that my coldstart prob is back. Today got a little cool outside (45 F.) and it was a "b" to start. I got a brand new choke in the mail that I Wed, 18 Nov 2009 22:50:17 GMT Dave http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5338 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5338 ... Look, the only thing you need to do is to get a Gates Powerlink belt if you don't already have one, install a new NGK CR7HSA plug in it, and get some 11 Wed, 18 Nov 2009 20:47:15 GMT cdulack30 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5337 http://autos.groups.yahoo.com/group/Chinese_scooter_forum/message/5337 I guess I'll stick with the factory cdi but I cant help but wonder if a $30 cdi would give me any gains. Thats pretty cheap...if it worked. My gut tells me a