Now would be a good time to do a tuneup.
remove the coil packs then the spark plugs dont just drop the plugs when installing this will damage the electrode
you have to take the plastic off the top of the moter and the spark plugs are under all that stuff i know it sucks but you can have the shop change them for a few hundred
with a left-handed spark plug wench...hehe, then you gotta putt'em in with a right-handed spark plug wench
spark plug loacation on 2006 jeep wrangler sport 4.0 liter engine
For a 2001 Ford Explorer Sport Trac : There are ( 6 spark plugs ) for your 4.0 liter V6 engine
Replacing spark plugs is pretty simple. Disconnect the battery, remove the cover and cables, remove the old spark plugs, put in the new spark plugs, put the cover and wires back on the spark plugs, and reconnect the battery.
( 6 spark plugs ) for your 4.0 liter SOHC , V6 engine
remove the spark rail it is held on by 4 13mm bolts and mabe a wiring harness on the rear of the motor is in the way it is an 11mm nut pull the spark rail back and push it down and you can accsess all the plugs with little trouble
THE INTAKE MANIFOLD MUST BE REMOVED. I WAS QUOTED > $600 TO CHANGE PLUGS. I SOLD MINE, AS IT WAS TIME FOR A TIMING BELT AS WELL. ANOTHER $600.
Yes. It could make it better or worse.
Disconnect the battery cables, remove the spark plug cables and covers, and remove the old spark plugs. Next, put in the new spark plugs, attach the covers and spark plug cables and reconnect the battery cables.
MotorCraft