IAT Surprise
I went a little further and took out the IAT sensor which to my surprise was gunked/tarred shut, makes me wonder what the inside of the intake looks like... I cleaned it all up w carburetor cleaner, also cleaned the MAP nipple in the intake manifold... Not sure how to post pictures, I'd put in on here to see it...
The truck runs much better, much improved, towed a 28' goosneck horse trailer about 500 miles w/o a bit of trouble and the meter says it used 14 miles / gallon... without the trailer it's more like 18 - 20... driving it easy.
Has anyone figured out how to clean the inside of the intake manifold without taking it off the engine???
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I know they used the "Sea Foam" on the gas motors to clean the inside of the intakes but I'm not sure I want to put that through my 6.0L..
Just thinking it the intake is gunked up like that it would effect cylinder balance and ultimately torque and efficiency...
Unless you re-route your crankcase vent it's going to get dirty again pretty quickly. I think for all practical purposes you could do a passible job with scrapers and a shop vac with a piece of 1/2in hose taped to the nozzle.
A word of caution, (sounds like you may be a "clean nut" like me
) If you pull the intake to clean it, you're going to want to pull the heads and clean them when you see what they look like. Where does the madness stop? Lol
Unless you re-route your crankcase vent it's going to get dirty again pretty quickly. I think for all practical purposes you could do a passible job with scrapers and a shop vac with a piece of 1/2in hose taped to the nozzle.
A word of caution, (sounds like you may be a "clean nut" like me
) If you pull the intake to clean it, you're going to want to pull the heads and clean them when you see what they look like. Where does the madness stop? LolI had my IA2 out a week or two ago and it looked just as nasty. Cleaned
up very nice and I bet in a few weeks it's will look at bad again.
Old Timer 3, If you look at the top of the forum page one you will see
a thread about how to post photos. I copied and put a link here just for you

https://www.ford-trucks.com/forums/1...he-forums.html
Enjoy
Sean
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One thing I thought about on the recent trip is that the max torque spec for this engine is at 2000 rpm, this is where it is going to pull the best, Maximum Torque can be equated to -Maximum Fill- or most efficient fill of the cylinders... this is where it's going to run the best down the highway... for mine it's about 65 mph, cruise control "on"... it all seems to come together at that number... good engineering, providing everything else is up to snuff...
Now have 103,000 and thinking about preventive maintenance in that the egr cooler should be replaced... I never drive it hard, no quarter mile passes, the right foot has almost never hit the floor board... so, it looks like the bullet proof egr cooler is the way to go and the oil cooler at the same time along with a coolant flush and it should be good for a while after that.
Doing the heads/gaskets/studs while the engine is in the truck looks like a "bear" of a job, I see some shops take the cab off...
My mind set does not allow me to take the truck anywhere for repairs or upgrades... always on it or in it myself...
Has anyone studied the PowerStrokeHelp.com guy ???
He's down south in Georgia or Alabama... can't remember...
He has a "bullet proof" program... expensive but a good guarantee...
I acquired an 05 intake that was absolutely plugged to the point where the EGR valve wouldn't open and a steam cleaner wouldn't get the passage open. I had to dig that gooey mess out with a screwdriver to get be able to get the valve back in. The valve took 3 hours of soaking, chiseling, and brushing to get it free enough to work. There's not anything on the planet that would have cleaned that intake without removing it.
Rusty have you seen all the discussion about the ported intakes and the gains they are getting from them?
The map hose is 3/16" ID, I think, maybe 1/4" and the nipple ID is 1/8" so... I'm thinking that increasing the diameter also increases the response time for the map... the change in pressure will be felt by the map sensor, maybe a tiny click faster.
"Gain" is always felt from a series of small improvements !
Any thoughts on the subject...
I've had the K/N system on this one for about 3 years and I thought it made a difference at first but over the long run, can't really mark any distinct change in character of the 2005 F-250 SuperDuty...
The best system I've seen is the "Extrusion Honing" where it's all bolted together on the heads, intake valves out and they force this thick abrasive goop through the whole thing under pressure... this really gets it like air flow would go...
When intakes are ported and reports are given, are these applications for the average user or for the stump pulling contestants ???










