Deflector pins

[Shane s]

What year did they start putting the longer
deflector pins in the etecs? I have an 09 250
and been having plugs carbon up when I
I do a lot of idling. Thought this might be something
to look into. I use XD 100. And I just changed the
thermostats. Thanks

[SEAHORSE]

2006

Check exhaust pressure sensor tube for blockage and use a temp gun on each cylinderhead to see if they are about 160 degrees after about 5 minutes of idle. Prop the motor around 5600-5800 rpm

What model number and what plugs?
Are they indexed correctly?
What is the highest fuel pressure reading at all speeds?