suggestions. 1. Sparkplugs are original factory since truck has run fine would expect not an improper gap,but maybe loose? 2. Wet or faulty coils? Coils go bad at 10k mi? Leaky injectors or what cause coils to be wet? 3. "sticky of faulty emissions-- clean IAC that I see mentioned on these threads? You 'da man Dan1 Hope to meet you at SDR. What days are you going? Does your Fast Air have a box surrounding powerstack filter to keep hot engine air out. Something like JL's box?

 

Jake: Here's a poor pic of my dirty filter box:

https://www.f150online.com/galleries...7029&anum=3208

Wet coils: not internal but external--washed eng?, coolant leak from coolant line(s) running over #3 & #4 coils?.

Spark plugs: no, not loose but cracked, damaged?

IAC: easy to clean--see Rob_G's thread.

I plan to be at SDR Sat & Sun and maybe Fri night for test-n-tune?

Dan

 

Hope I will meet you at SDR!