Hey guys,
I've been having issues with missing at 3000rpm on a trailing throttle, then reapplying partial throttle in my GTR.
At 50% and WOT throttle it is fine. So I'm guessing it is a spark related issue.
I've got splitfire coils and replaced the igniter, so it rules them out.
I changed the plugs today, hoping that it would solve the problem, but found actually that plug no. 2 was quite 'wet' around the thread (the electrode was clean though) compared to all the other plugs (see pics below). This is almost definitely unburnt fuel - plug smells like petrol, not oil.
So, my questions are
1. why is it missing? deteriorated wiring loom (loom from igniter to plugs?
2. i assume the missing is from cylinder 2 then?
3. wouldn't be rings on #2 would it? like i said smells like petrol not oil...
Thanks in advance