so. 2006 f150 screw 4.6 K&N FIPK CAI, Dynomax exhaust leveled... etc

When i start it on a cool morning zero or below my truck turns over beautifully. brand new battery, brand new alternator both tested at maximum performance. new TPS new MAF everythign possible new, when the truck fires it sounds like its rough or " dry " untill it gets a few turns going. ive had the fuel rail cleaned and water remover put in and it jsut doesnt seem to want to fire normally again.

now im in northern Central ontario where its been well below zero lately. and i still have my cold air on. would that may be a factor in this? it happened to my '00 scab 4.6 last winter as well and i left the CAI on..

any opinions would be amazing please

 

try w/o cai, try changing plugs and check Coil On Plugs.
check fptk in rear of truck, they rust out.
heres what my plugs llooked like before changing them myself

 

FPDM was replaced 4 months ago

coils are all new and spark plugs are brand new.

and i hope you didnt pull those out of a 4.6 lol

 

lol, nope, didnt notice you stated 4.6 till now, but they might have similar problems. are the 4.6 plugs totally different?

 

ya lol the 4.6 uses a normal spark plug. i was going to buy a 5.4 but decided it wasnt worth the hassle

 

How many miles did you have on those champions? The broken one has me worried about mine... Or did you break that after you pulled it out?

 

i just boughtnit a month ago and it started the rough idle soon after i bought it so i have no idea how long those were in there?

 

Gotcha... Well atleast you had champions in there so you know they are coming out no problems. I have champions in mine too. The spark plugs have been known to cause misfires after little miles. Mine are still good. I just don't like how the tip of yours broke off. What plugs did you put back in after you changed them? I think I will go with motorcrafts next time due to the bad reviews of champion (although they dont break )

 

gotcha what?
i put in autolites that i got half price, they at least resemble the original motocrafts.

 

Saying "gotcha" as in "I gotcha" or "I understand" because you have no idea how long they were in there for. I have heard of them misfiring at 30,000 km but never seen them break off like that.