On a 2003 Lincoln LS , 3.9 litre V8 engine :
According to the Owner Guide :
The firing order is ( 1 - 5 - 4 - 2 - 6 - 3 - 7 - 8 )
It has the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils
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The engine cylinder locations are numbered :
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front of vehicle
8 spark plugs
( 6 spark plugs ) for your V6 engine in a 2003 Lincoln LS
The coils are bolted to the side of the engine, The spark plugs are under the coils, NO PLUG WIRES. unbolt the coils and use A spark plug socket.
The Ignition Coil is the one that cause misfire or Spark Plugs
4 Spark plugs
Check the Vehicle Emission Control Information ( VECI ) decal located in the front of the engine compartment ( it will show the type of spark plugs to use and the spark plug gap )
2002 galant , can't find the spark plugs
ALL gasoline engines have spark plugs. Only diesels don't have spark plugs.
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No spark plugs on a diesel
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ac delco spark plugs are type that originally came with 2003 GMC envoy