30k... yes. I bought the truck in 2008... three years old with only 5400 local miles. It was just what we needed with two preteens in need of legroom... a nice step up from a Dakota extended cab.

 

I changed my about 3wks ago and i had no problems changing them. You might have to move some hose's around but other then that things should go fine if u have the right tools of course...lol

 

Yeah you're right I didnt find anything easily on changing the plugs on a 4.7 through the search function. This is what the service manual says, maybe it will help ya out?

4.7 Spark Plug Change.


Ignition Coil Removal
4.7L V-8

An individual ignition coil is used for each spark
plug (Fig. 15).



The coil fits into machined holes in the
cylinder head. A mounting stud/nut secures each coil
to the top of the intake manifold (Fig. 17).



The bottom of the coil is equipped with a rubber boot to seal
the spark plug to the coil. Inside each rubber boot is
a spring. The spring is used for a mechanical contact
between the coil and the top of the spark plug. These
rubber boots and springs are a permanent part of the
coil and are not serviced separately.
An o-ring (Fig.15) is used to seal the coil at the opening into the cylinder
head.

(1) Depending on which coil is being removed, the
throttle body air intake tube or intake box may need
to be removed to gain access to coil.

(2) Disconnect electrical connector (Fig. 17) from
coil by pushing downward on release lock on top of
connector and pull connector from coil.

(3) Clean area at base of coil with compressed air
before removal.

(4) Remove coil mounting nut from mounting stud(Fig. 17)

(5) Carefully pull up coil from cylinder head opening with a slight twisting action.

(6) Remove coil from vehicle.


Spark Plug Removal
4.7L V-8

Each individual spark plug is located under each
ignition coil. Each individual ignition coil must be
removed to gain access to each spark plug. Refer to
Ignition Coil Removal/Installation.

(1) Remove necessary air filter tubing at throttle
body.

(2) Prior to removing ignition coil, spray compressed
air around coil base at cylinder head.

(3) Prior to removing spark plug, spray compressed
air into cylinder head opening. This will help
prevent foreign material from entering combustion
chamber.

(4) Remove spark plug from cylinder head using a
quality socket with a rubber or foam insert. Also
check condition of ignition coil o-ring and replace as
necessary.


Spark Plug Installation
4.7L V-8

CAUTION: The 4.7L V–8 engine is equipped with
copper core ground electrode spark plugs. They
must be replaced with the same type/number spark
plug as the original. If another spark plug is substituted,
pre-ignition will result.

Special care should be taken when installing spark
plugs into the cylinder head spark plug wells. Be
sure the plugs do not drop into the plug wells as electrodes
can be damaged.

Always tighten spark plugs to the specified torque.
Over tightening can cause distortion resulting in a
change in the spark plug gap or a cracked porcelain
insulator.

(1) Start the spark plug into the cylinder head by
hand to avoid cross threading.

(2) Tighten spark plugs. Refer to torque specifications. (20ft/lbs)

(3) Before installing ignition coil(s), check condition
of coil o-ring and replace as necessary. To aid in
coil installation, apply silicone to coil o-ring.

(4) Install ignition coil(s). Refer to Ignition Coil Removal/Installation.



Ignition Coil Installation
4.7L V-8

(1) Using compressed air, blow out any dirt or contaminants
from around top of spark plug.

(2) Check condition of coil o-ring and replace as
necessary. To aid in coil installation, apply silicone to
coil o-ring.

(3) Position ignition coil into cylinder head opening
and push onto spark plug. Do this while guiding coil
base over mounting stud.

(4) Install coil mounting stud nut. Refer to torque
specifications. (70 in/lbs)

(5) Connect electrical connector to coil by snapping
into position.

(6) If necessary, install throttle body air tube.






I haven’t changed plugs in a 4.7 but I’d imagine a normal 5/8ths spark plug socket, couple extensions, and maybe a universal socket joint. The bolts on the ignition coils are probably 10mm. I’d recommend using dielectric grease on the boots and use anti-seize paste on the spark plug threads. Let us know how it goes!

 

yup I need to do this

 

WOW, JoeHemi... that is great. Thanks so much for the manual info. The folks on this site have been so helpful to me over the years.
My truck goes in to have the EGR assembly replaced (I bought one after getting the P0406 code but say that it was too much to replace it myself on the 4.7), have the transmission serviced, the front and rear diffs fluid changes, and transfer case fluid change.
I just noticed King County... I am in Des Moines. Thanks again.

 

Hey thats what we're here for . I'm just over in Renton. When I worked down in kent for awhile I did some work in des moines / seatac. If you ever need some help workin on the truck, I'd be glad to help. Just let me know

 

Thanks.. that's mighty kind and will keep you in mind.