Northstar engines are very difficult to work on. Recommend taking to a trained professional.
If you are adventurous, remove the plating on top the engine (with the Cadillac emblem; should be 2-4 bolts). If the spark plugs are not visible, then you may have to remove the secondary plate (2-4 bolts as well). On later model Northstar engines (after model year 2000) the distributorless ignition system was changed to a-on-plug design; each head has its own ignition module.
Once again, if you are not entirely comfortable removing obstructions until you reach the spark plugs, take your vehicle to a prefessional.
It's not a very arduous task. I just did one myself.
Take off the plastic cover by removing the 4 plastic bolts.
If possible, take a picture with a camera or cell phone for future re-assembly.
Remove the metal cross-brace...4 (13mm) bolts and set aside. (less than five minutes).
Unplug the wires from the spark-plugs.
Unplug the four connectors from the coil assembly on the rear valve cover.
Using a 10mm socket with 3 inch extension, remove the four bolts holding the coil assembly. 2 in the front are easy and 2 in the back just a little more tedious. (good time to look at the assembly).
where are the sparkplugs on a 2002 cadillac deville and how to change them
How can I change the wiring and spark plugs on my 1996 Cadillac Sedan Deville Concours?
spark plug replacement on a 93 Cadillac DeVille 4.9 liter
if it is a v8 it has 8 spark plugs if its a v6 it has 6 spark plugs and ect
Spark plugs are easy to change. One disconnects the batter and spark plug cables, and removes the old spark plugs. Next a person puts in the new spark plugs, then reconnects spark plug cables and the battery.
Dealer service item.
How to Replace spark plugs on 2004 cadillac deville Sls with 4.6 v8 engine
A 97 Deville would be equipped with the Northstar V8 engine, therefore, it has 8 spark plugs.
its your Oxygen censer
what is the spark plug gap setting for a 96 Cadillac deville?
What is the spark plug gap setting for a 89 cadillac deville?
Torque to 11 lb/ft
Pull wire off the spark plug
Recommended change is 100,000 miles
1997 Cadillac Deville 4.6L SFI DOHC 8cylThe Spark Plug Gap.050 (In thousandths of an inch)
The easiest way is to take vehicle to a machanic and have him do it.
Disconnect the battery, remove the spark plug cables and boots, and remove the old spark plugs. Dispose of the old spark plugs, put in the new spark plugs, attach the spark plug cables and boots, and connect the battery.
when do you change spark plugs
Torque the spark plugs to 11 lb/ft.
One reason a 1998 Cadillac Deville would cut off while driving could be the fuel pump or the car is out of fuel. Another reason could be the spark plugs.
double platinum Bosch gapped at .55 - pretty standard stuff!
my name is Edgar jara
SPARK PLUG GAP2003 Cadillac Deville 4.6L SFI DOHC 8cylThe Spark Plug Gap.050 (In thousandths of an inch) Caution! Gap is not adjustable on certain plug brands