Open the hood and chase out the spark plug wires.
it is an V8 meaning it has 8 plugs
at the end of the plugwires.
A 1998 Lincoln Town Car has the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils , so it doesn't have the " normal " spark plug cables
A 1999 Lincoln Town Car has a 4.6L V8. Ever since (I believe) 1991 they have had this engine.
Gap 0.50 (in thousandths)
.054 inch ( spark plug gap for the 4.6 liter - SOHC - V8 engine in a 2002 Lincoln Town Car , according to motorcraft.com , one of Fords websites )
According to one of the Ford websites : For a 1990 Lincoln Town Car 5.0 liter / 302 cubic inch V8 engine : ( the spark plugs are gapped at .050 inch )
According to one of Ford's websites : For the 5.0 liter / 302 cubic inch V8 engine in a 1986 Lincoln Town Car : ( the spark plugs are gapped at .050 inch )
The spark plug gap for a 1997 Lincoln Town Car is .054.
find the wires and do one at a time as too not cross wires with different plugs
remove the coil pack off of the top of the cylinder, remove the spark plug. show me coil pack ?
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 )