Yamaha big bear 350 spark problem

[ovidiu_186]

I have a 1990 Big Bear 350 4x4, and i have a spark problem : has spark 2, 3 seconds after that has no spark and again 2,3 seconds spark after that no spark

I checked the stator and is within normal parameters

Coil and spark plug ar new

cdi is ok

I'm sorry but I used google translate

because i am from Romania

please help

thanks

[oxidized_black]

probably the stator. mine did the same thing.

[ovidiu_186]

the stator is in the right ohms

[oxidized_black]

you shouldnt have 2-3 second wait for spark. maybe a flat spot in coils of stator.

my spark was weak blue before i changed stator, then brilliant blue after new one ...

what does your spark plug look like grounded out of cylinder while being turned over?

[ovidiu_186]

brilliant blue

[ovidiu_186]

The problem was the cdi i opened the box and i change a transistor if you like i cant post photos

[oxidized_black]

glad you found the problem ...

yes post for future reference, thanks !!

[ovidiu_186]

Where can I find cdi wires diagram ?

thanks

[oxidized_black]

this is what is in the manual ,,,

[ovidiu_186]

thanks but no

the cdi unit itself the diagram