The 98 Tracer has four plugs
Each spark plug has a coil on the top. Just remove the coil.
Pull off the upper intake plenum and you will have access to the plugs and wires.
As needed CheckSpark can quickly determine the health of your plugs and wires . You can get it on e-bay $24.95
The 1998 Mercury Tracer owners manual shows : 4.0 quarts ( 3.8 liters ) with oil filter change
It has spark plugs. They are just hidden from view.
Yes , the 2.0 liter 4 cylinder in a 1998 Mercury Tracer is an interference engine
In the middle of your steering wheel.
According to the 1998 Mercury Tracer owners manual the firing order for the 2.0 liter SOHC engine is ( 1 - 3 - 4 - 2 )
According to the 1998 Mercury Tracer Owner Guide : ( 48.5 litres / 12.8 U.S. gallons )
you put it in the car
According to the 1998 Mercury Tracer owners manual : ( # 9007 ) aero high and low beam
A speed sensor on a 1998 Mercury Tracer is located on the transmission housing of the vehicle. It is placed on top in a secure location to safely measure the speed the transaxle spins.