2007 Vespa GT 200 starter engages when brake lever is pulled

Donald DCruz

• 17130 Answers
• Posted on Sep 13, 2011

SOURCE: VESPA 2008 LX 50.Will not

The poor performance of the engine can makes these faults to come up. we need to check from the fuel tank , check if the fuel contains impurities and specially water. If so this can come up when the tank gets empty and produce misfiring, splutter and jerks. So a check on the fuel filter will confirm this as it will be seen, if so remove and clean tank and change the filter. We then come to the carburetor as the fuel mixing is determined in this section. You need to have the carburetor removed and all ports washed and cleaned if there is traces of dirt or clogging noticed in the fuel chamber.

Secondly we need to check on the electrics. The spark intensity is most important .Remove the plug to check gap and condition of plugs. The black plug indication will confirm that the performance is bad whereas a fully fired plug without deposits must be the ideal view. Check the HT coil and the HT wires, if the intensity is bad the ignition system must be checked. DO NOT CHANGE any part without a confirmation--- trying with a replacement from another vehicle. Finally the LT trigger to the coils must be checked be it from the platinum points or an electronic ignition unit. The voltage of the trigger must be high to give the best HT output.

Finally check the Timing on the engine. Also check compression of engine since you experience starting fault.

Thank you for using Fixya

SOURCE: my vespa piaggio scooter wont start 50cc year 2000

Pull the hose that goes to your carburetor from underneath the fuel tank and crank the engine for a second. You should see fuel coming out of the hose.Pull the spark plug's cap, remove the cap by turning it counterclockwise like unsrewing a bolt, and while holding it far from the edge, take the ignition coil wire's end close to the engine creating a gap of 1cm (less than an inch) and crank the engine. You should see a spark between the cable's edge and the crankcase.If all the above turn ok but you still cannot start the engine (even by replacing the spark plug with a new one) then you shoul have your compression check at a dealer.