You are here:

Automotive/Mercury Grand Marquis - replace spark plugs

Advertisement

Expert: Sean Halliday - 12/25/2008


Question
Hello,
The service manual of my 1998 Mercury Grand Marquis recommends changing the spark plugs at 100,000 miles. Please advise how this is different from a tune up. Also, some posts have mentioned other components - coils, distributor, rotor, filters, etc. Can you please explain if they need to be replaced along with the spark plugs? What is a fair labor time for these repairs? Finally, do you recommend sticking with Motorcraft or are replacement parts such as Autolite ok too?
Thanks,
AJ

Answer
Autolite and motorcraft are the same thing,both made by Ford.A basic tune up is ,rotor,cap,wires,oil/air/fuel filters,plugs,change oil and top up fluids if needed.You will not need to change the coil or distributor (if fitted).Time depends on the shop,i would be estimating 2 hrs,3 at the most.

Automotive

All Answers

Answers by Expert:

Ask Experts

Volunteer

Sean Halliday

Expertise

general auto repair,japanese,bmw,mercedes,mini cooper 1960/2009,general british cars,ford.I DO NOT work on automatic transmissions.Manual transissions i install clutches only.Many people ask me to diagnose noises from their cars,unfortunately i cannot do this unless i hear it.As you appreciate,vehicles can and will make a variety of noises.I DONT UPGRADE or fit aftermarket performace kits,parts,chips,only replacement parts.

Experience

40 years experience on all general auto repair.

©2012 About.com, a part of The New York Times Company. All rights reserved.