Difficult Cold Start Or Warm Start Of The Engine - PIAGGIO 500 cc Service Manual

2) DIFFICULT COLD START OR WARM START OF THE ENGINE

Proceed with the following controls:
Presence of anomalies revealed through injection
self-diagnosis
Starting
Compression end pressure
Spark plug feed
Fuel supply
Parameter correctness
Pump relay (see page 9-41)
H.V. coil (see page 9-68)
Injector (see page 9-62)
Phase revolutions sensor
Air temperature
Coolant temperature
Atmospheric pressure
Starter and electromagnetic switch
Battery
Earth connections
Spark plug
Shielded cap
H.V. coil
Phase revolutions sensor
Spark lead
Petrol pressure (low)
Injector capacity (low)
Injector stability (poor)
Coolant temperature
Air intake temperature
Throttle valve position
Stepper (steps and actual opening)
Cleanliness of auxiliary air duct of the throttle
valve
air filter efficiency
Fuel injection
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