I have read somewhere when RonJ said that icm can also cause a weak spark but i couldnt find the thread.

just want to know how can the icm aka igniter cause a weak spark? I thought that only a defective coil can cause a weak spark

 

You read it in his DIY post here:

https://honda-tech.com/forums/honda-...blems-2919450/

 

Ok thanks but how can the igniter cause a weak spark?

 

You will have to ask @RonJ. He's the one who wrote it.

I can't say I honestly know. I haven't studied the circuitry enough to know.

 

Normally the coil would cause weak spark because it is what produces the power.