Most of the newer vehicles will easily make it to 100,000 miles before needing a tune up. As long as it's running ok and fuel mileage hasn't suffered I certainly wouldn't change them before then. Make sure to use a good double platinum spark plug.
how to change spark plugs on a 2001 expedition
Where and how do you find the spark plugs for a 1997 ford expedition?
CHange the spark plugs from the bottom of the engine. Hope we've pointed you in the right direction.
Yes , it has 8 spark plugs
How to Change Spark Plugs on 4.6 & 5.4 Liter Check related link below
how can i change tha air suspencion sistem?
when do you change spark plugs
Does a 2003 ford expedition have spark plugs?
On a 1998 Ford Expedition : There are ( 8 spark plugs ) for the 4.6 and 5.4 liter V8 engines
In a 2002 Ford Expedition : For the 4.6 or 5.4 liter V8 engines : (there are 8 spark plugs )
FOLLOW THE SPARK PLUG WIRES TO THE BLOCK. AND YOU WILL FIND YOUR PLUGS. A FEW OF THEM ARE HARD TO CHANGE BUT JUST PERSIST AND YOU'LL BE FINE
yes , it has ( 8 ) spark plugs , they are under the ( 8 ) individual coils