Question about 2007 Piaggio Fly 50

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2007 Piaggio Fly 50 intermittent hard starting

Fly 50 four stroke, 2007. Brand new carb. Have not adjusted any of the factory carb settings. Simply installed new carb out of box. Starts fine, choke working. Warms up, rides fine, up to 35 mph. When I shut it off, it will restart just fine. If it sits for about 15 minutes, it takes at least six or seven attempts to re-start it. I'm not applying any throttle so I doubt a flooding problem. Only occurs when warm and sits for 15 minutes or longer. Any suggestions? BTW, Only 900 miles on scooter.

Posted by Anonymous on

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Hi, Anonymous and the usual suspects are:
1. Spark plugs in bad condition or have an improper gap or are partially fouled.
2. Spark plug cables in bad condition.
3. Battery damaged or nearly discharged, should have 12.5 volts.
4. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
5. Throttle controls not adjusted correctly.
6. Water or dirt in the fuel system.
7. Water or dirt in the carburetor.
8. Faulty fuel pump.
9. Intake air leak.
10. Fuel tank vent hose and vapor valve plugged, or fuel line closed off, restricting fuel flow.
11. Enricher valve inoperative.
12. Engine lubricant to heavy (winter operation).
13. Ignition is not functioning properly (possible sensor failure).
14. Faulty ignition coil.
15. Valves sticking.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Modern Vespa Piaggio Fly 50 with intermittent starting problem
My Piaggio 50 Won start
PIAGGIO MSS Fly 50 4T Workshop Manual
Piaggio Fly 50 4T 2005 2012
http://mybikemanuals.com/vespa/uncategorized-vespa-owners-manuals

Posted on May 23, 2017

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: piaggio fly 50 4t

Re-set the idle adjustment screw on carb? Also check fuel / air filter.

Posted on Mar 22, 2014

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