BobL
Newbie
Karma: 0
 Offline
Posts: 13
|
 |
« on: October 16, 2011, 02:38:44 PM » |
|
Hello Scootter Wizards;
Enjoying the forms greatly since I got my scooter a couple months ago. I have a 2011 TaoTao 50cc 4 stroke that has in the last week developed a starting problem. It was gradually getting worse over the week, then finally will not start at all. It has only 870 km on it and was running great once it was started.
I have changed the plug...looked over the fuel system (the fplastic filter seems to have air bubbles in it??) I'm considering taking the carb off and apart while looking at the pics posted in this website.
Any helpful ideas/advice would be greatly appreciated
BobL
|
|
|
|
|
Logged
|
|
|
|
|
ScooterForumOnline
|
|
« on: October 16, 2011, 02:38:44 PM » |
|
|
|
|
|
|
Logged
|
|
|
|
|
|
|
ScooterForumOnline
|
|
« Reply #1 on: October 16, 2011, 02:47:29 PM » |
|
|
|
|
|
|
Logged
|
|
|
|
BobL
Newbie
Karma: 0
Offline
Posts: 13
|
|
« Reply #2 on: October 16, 2011, 02:59:30 PM » |
|
Thanks for the quick reply Fox
I did change the plug with a NGK...what about the idle screw adjustment? Should a scoot with just 800 k's on it need a valve adjustment so soon? I checked out your thread on valve adjustments and may try it.
BobL
|
|
|
|
|
Logged
|
|
|
|
|
ScooterForumOnline
|
|
« Reply #2 on: October 16, 2011, 02:59:30 PM » |
|
|
|
|
|
|
Logged
|
|
|
|
|
Fox
|
|
« Reply #3 on: October 16, 2011, 05:06:29 PM » |
|
It's very common for a scooter to need a valve adjustment shortly after break-in. It's a simple procedure. Don't be intimidated by it. I bet you will find that one of the valves is tight. (no gap) That makes you lose some compression which in turn causes hard starting, stalling etc.
If you don't have a gauge, cut a strip of an aluminum can and use that.
|
|
|
|
|
Logged
|
Dave
2003 Qianjiang 50 2T
|
|
|
|
ScooterForumOnline
|
|
« Reply #3 on: October 16, 2011, 05:06:29 PM » |
|
|
|
|
|
|
Logged
|
|
|
|
BobL
Newbie
Karma: 0
Offline
Posts: 13
|
|
« Reply #4 on: October 17, 2011, 05:38:51 AM » |
|
Thanks again Fox;
I'll learn to adjust the valves today...hope that's the solution.
BobL
|
|
|
|
|
Logged
|
|
|
|
rlund23335
Newbie
Karma: 0
Offline
Posts: 6
|
|
« Reply #5 on: October 18, 2011, 01:09:33 AM » |
|
Hello Scootter Wizards;
Enjoying the forms greatly since I got my scooter a couple months ago. I have a 2011 TaoTao 50cc 4 stroke that has in the last week developed a starting problem. It was gradually getting worse over the week, then finally will not start at all. It has only 870 km on it and was running great once it was started.
I have changed the plug...looked over the fuel system (the fplastic filter seems to have air bubbles in it??) I'm considering taking the carb off and apart while looking at the pics posted in this website.
Any helpful ideas/advice would be greatly appreciated
BobL
Thoughs bubbles in the filter may not be bubbles but may be water dropplets, you may want to replace the filter. |
|
|
|
« Last Edit: October 18, 2011, 01:11:34 AM by rlund23335 »
|
Logged
|
|
|
|
BobL
Newbie
Karma: 0
Offline
Posts: 13
|
|
« Reply #6 on: October 18, 2011, 10:01:26 AM » |
|
Well, I adjusted the valves but it still won't start.  It's not getting any fuel to the spark plug. The carb is getting fuel.  ? This carb is made withou screws to access the jets??? They're screws but have no heads on them. What kind of trick is that BobL |
|
|
|
|
Logged
|
|
|
|
chris-bob
Ornrier than cat manure, and twice as stinky.
Scooter Forum Expert
Karma: 3
Offline
Posts: 253
Born to Scoot!
|
|
« Reply #7 on: October 18, 2011, 10:08:47 AM » |
|
Could be tamper proof plugs covering the screws.
|
|
|
|
|
Logged
|
2007 Yamaha Vino 125(sold)
2005 Tank Urban 50 with 72cc kit
1983 Honda Passport C70 with 125cc clone engine
1979 Piaggio Vespa P125X(150cc top end)
1966 Yamaha MG-1T Omaha Trail 80cc
|
|
|
|
Fox
|
|
« Reply #8 on: October 18, 2011, 10:47:22 AM » |
|
|
|
|
|
|
Logged
|
Dave
2003 Qianjiang 50 2T
|
|
|
BobL
Newbie
Karma: 0
Offline
Posts: 13
|
|
« Reply #9 on: October 18, 2011, 12:07:51 PM » |
|
Thanks for the reinforcement on the stupid carb trick. I have ordered a new one from the ebay sites. 25 bucks ain't bad!
BobL
|
|
|
|
|
Logged
|
|
|
|
|
Fox
|
|
« Reply #10 on: October 18, 2011, 02:17:18 PM » |
|
Well, keep the old carb for spare parts. You can drill the bowl off to get to the jets. You might need the old main jet if the new carb has one that is too small or too big. The color of the spark plug will tell you. We'll cover that later...
If you bought the carb from topeshop10, then it should get to you fairly fast. I have bought three from them and they arrived in 3 or 4 days if memory serves me correctly.
|
|
|
|
|
Logged
|
Dave
2003 Qianjiang 50 2T
|
|
|
goosestale
Scooter Forum Guru
Karma: 26
Offline
Posts: 1,052
Goosey
|
|
« Reply #11 on: October 19, 2011, 06:09:07 PM » |
|
Just a time saver suggestion, you should check for spark also, when you are having no start issues...could save a lot of time going over the fuel system.
|
|
|
|
|
Logged
|
2005 Baron Retro 150cc 2009 RoadRunner Classic 150cc  |
|
|
BobL
Newbie
Karma: 0
Offline
Posts: 13
|
|
« Reply #12 on: October 21, 2011, 04:26:41 PM » |
|
Bummer; Installed the new carb from ebay and the scoot still won't start. ? New NGk Plug....got spark but plug is dry??? Adjusted valves (only intake a little tight using the aluminum can trick) Any ideas on what to do next, other than trying to sell a scoot that won't start??? |
|
|
|
« Last Edit: October 21, 2011, 04:34:25 PM by BobL »
|
Logged
|
|
|
|
|
Fox
|
|
« Reply #13 on: October 21, 2011, 06:15:10 PM » |
|
Is the carb full of gas?
You need 4 things to have a running engine:
Spark (at the right time)
Compression
Fuel
Air
How does the compression feel when you work the kick lever with your bare hand? Work the lever real slow and feel for when the piston is compressing the air in the cylinder. It should make a hissing noise and fight you pretty good. If it's weak then maybe you have a bad valve or rings or a gasket. The only way(s) to tell is to either tear it apart or get a compression tester and test the engine.
|
|
|
|
|
Logged
|
Dave
2003 Qianjiang 50 2T
|
|
|
|
scooter 49
|
|
« Reply #14 on: October 21, 2011, 07:33:01 PM » |
|
Did you ever see if your vacuum valve is stuck closed? You can test it by disconnecting your vacuum hose to the carb and sucking on the end of it. Gas should flow through gas line at this point. If no gas flows replace your vacuum valve.
|
|
|
|
|
Logged
|
|
|
|
|
ScooterForumOnline
|
TDP Powersports - BEST Performance for ATV Parts, Scooter Parts, Motorcycles Parts, Dirt Bikes Parts and UTVs Parts
|
|
|
|
|
Logged
|
|
|
|
|
