I have a 1999 Ford Contour L4-122 2.0L DOHC SFI.
I need to change the plugs and noticed it has two different numbers. 2 Double Plats and 2 Regular Plats
Motorcraft part # AZFS32F and part # AZFS32FE.
Is this mandatory that I replace with same ones?
Also, what's the sequence and plug gap and torque?
Thanks