Piaggio wont stay running

SOURCE: 1986 Yamaha Radian stops running after 20 minutes

Sounds to me like it could be a few things... pretty interesting that it runs and shuts down...sits for a little while then fires back up. Could be something as simple as a bad ground.. maybe it needs cleaned.. if the ground is making very little contact.. the bike would run bad, and because its direct current it has to flow. The metal in the motor frame etc will hold so much DC current.. but *** soon as it load up the bike would stop sparking. Let it sit for a while, DC trickles into the battery through the slight contact, bike fires back up. OR could be bad venting of your fuel tank, or a partial clog at the pet ****.. the first is pretty easy to check, open your fuel cap and start the bike..if it does the same thing then its not a vent problem. One thing that does happen on the Radian, is the reserve fuel screen inside the tank comes loose, and then everything inside the that has built up over the years either partially clogs the pet ****, or the hose, or both. Take the tank off, pull the pet **** off..if it still has two intact tubes with good screens..you probably don't have any junk in your line..but I would pull the line off and blow through it any way... it could be some type of blockage, when the bike sets the fuel seep through, but when it runs it eventually creates a vaccuum that stops the fuel flow. Those are my two first thoughts... good luck!!

SOURCE: my piaggio nrg mc3 running problem

hi buddy on the carb will be a screw this is the mixture screw turn this all the way in and unscrew it 1 1/2 turns out i will send a pic when i get home from work

SOURCE: i got a piaggio fly 50 4v that stop at the middle

Hi,
Check these parts.....

• spark plug that might already fouled up and needs cleaning.
• spark from ignition coil, if there are no sparks the CDi got problem
• carburetor, check if there is a fuel going into the carb, choke it by hand, fuel moist must be seen on your hand. If not no fuel is flowing into the carb.
• check fuel filter if fuel is coming out continuosly.