L.A.B. wrote:17P6 (and 17P12) are 'high power' coils.
L.A.B. wrote:I don't know. Possibly.
Is it always the same cylinder that cuts out?
If it is, have you tried swapping the coils/leads/plug caps/plugs?
I used a tool similar to this to show a bad coil. I also think if you can use an induction timing light to pickup an intermittent spark.
https://www.amazon.com/Lisle-19380-Spar ... B0002STS3U