MSefi.com read only forum (Jan.15,2018)

my ride is 100CC 4stroke ATV
i have some question hope everyone can help me
Today i use pico to find out misfire.
but i saw some wrong with my spark duration
my spark duration just 380 uS
and i tried to modify dwell time , but spark duration not apparent change.
how can i to fix this problem ~and thx for all

and thx for all


*in the that figure yellow is Primary Ignition
red is rpm
blue is Secondary Ignition

yellow is Secondary Ignition
red is Primary Ignition
blue is rpm

That isn't all that unusual for an actual spark duration. The "max spark duration" in the settings is more of an anti-dwell, how much time it takes the coil to recover before you start charging again.

i set dwell time is 3.5ms,and maximum spark duration time :2.0ms
and what factor also can be affected spark duration?
i'm very confuse with that
and also upload my datalog
thx for help
**
red is mean primary spark
yellow is mean second spark