|Engine was stopped suddenly on the highway and couldn’t restart. No fire was identified on the rear spark plug.|
|Cause of failure|
Shortly before engine stopped, the following symptoms sometimes occurred.
-Engine speed can’t increase smoothly above 3,000 rpm.
Cam position sensor, Ignition module：Altmann Micro Machines
The cam position sensor seemed to operate normally. So I assumed that the ignition module might be wrong.
I sent him some pictures that of around ignition coils.
He also mentioned that the dual plug setup is not recommended because the second plug code is located between two push rods and the clearance between the plug code and push rod covers is so close.
I understood what Mr. Altmann said in his email, however, I didn’t give up dual plugs.