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Wayne S.
Wayne S., Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 1255
Experience:  Experienced and Licensed Motorcycle Mechanic - all sizes and brands welcome.
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My 2012 sept . vespa s150ie stalls after running varm engine

Customer Question

HI my 2012 sept . vespa s150ie stalls after running varm engine why?? thanks
Submitted: 2 years ago.
Category: Motorcycle
Expert:  Wayne S. replied 2 years ago.


Usually one of a few things.
Spark plug going bad or loose plug wire.
Valve clearance needs adjusting 0.10mm intake-0.15mm exhaust.(004"-.006")
Idle air control circuit in throttle body has sucked some oil into
itself from the air filter.
Picture here:
Some carb cleaner spray in that idle air circuit
hole might help. It is on the air filter side
of the throttle body.
The spark plug is tough to get at. A piece of hose
on the end might help to position it
so as not to strip the threads in the engine head.
Let me know how it goes.