My 1997 Mercury Grand Marquis won't start in the morning?

Q: I have a 1997 Mercury Grand Marquis and every morning I have a problem starting it. I have to spray it with starter fluid every morning to get it started. I have changed the fuel pump, fuel filter, air flow regulator, and put in a new battery. Does anyone have any suggestions?

A: spray probly wrecked air flow sensor...real ques is why all the fuel parts,,,,,ever tune it up...plugs wires,cap,rotor if equiped,,,

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