
but when it runs on 3 cylinders again, i have cleaned the plugs numerous times (all are black) to no avail. so mite just need to replace them all?
they look like factory plugs also (denso stylez) and engines done 180km
due to having 20-50w oil in there may have helpd oil them? so an oil change to 15-40w and new plugs should cure the problem?
