Mercury LN7 Ignition Cable (Spark plug wires) Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

customer ratings

(1,341)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

customer ratings

(1,341)

Ignition Cable (Spark plug wires) Replacement Estimate for Mercury LN7

Mercury LN7 Ignition Cable (Spark plug wires) Replacement costs $187 on average.

CarServiceEstimateShop/Dealer Price
1983 Mercury LN7L4-1.6LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$291.99Shop/Dealer Price$352.39 - $505.69
1982 Mercury LN7L4-1.6LService typeIgnition Cable (Spark plug wires) ReplacementEstimate$271.99Shop/Dealer Price$332.41 - $485.72
Show example Mercury LN7 Ignition Cable (Spark plug wires) Replacement prices

Ignition Cable (Spark plug wires) Replacement Service

What is the Ignition Cable (Spark plug wires) all about?

The ignition cables, also known as “spark plug wires” are part of the ignition system. They transfer the spark from the distributor or ignition coil to spark plugs that ignite the air-fuel mixture, starting the engine.

Over time, the cables can get weak and break down. This will make it harder for the spark to reach the engine cylinders, resulting in engine misfires. The car may not start at all. If one of the spark plugs has gone bad, the car will still start and run, but it will run poorly.

Keep in mind:

  • Ignition cable failure is often caused by other failing pieces in the ignition system; a mechanic should check for any other malfunctioning parts, and replace any parts of the system that don’t work.
  • Every time the ignition cables are replaced, the spark plugs should be inspected.
  • Leaking oil or coolant can cause ignition wire failure. If this is the case, the cause of the leak should be repaired or replaced, or else the new ignition wires will quickly be damaged as well.

How it's done:

  • Scan the computer system in the car for codes.
  • Inspect ignition cables (look for white spots).
  • Ohm test on individual cables.
  • Remove and replace the cables if found faulty.
  • Inspect the spark plugs.
  • Clear the codes.

Our recommendation:

Ignition wires should be replaced at least every 60,000 miles, but whenever your car is serviced, it’s a good idea to have the entire ignition system inspected. Any time that you have spark plugs replaced, it’s a good idea to have the ignition wires replaced as well. If you notice that your engine is running poorly, you should schedule an inspection.

What common symptoms indicate you may need to replace the Ignition Cable (Spark plug wires)?

  • Check Engine light is on.
  • Engine misfires.
  • Poor gas mileage.
  • Engine may shake (light vibration).

How important is this service?

The fuel in your automobile is ignited by a spark. This starts with the ignition coil, which transforms low voltage power into extremely high voltage. This high voltage is transferred through the ignition cables, and to the spark plug, where a spark is created that ignites the engine’s fuel, and powers the engine.

When one or more ignition cables fail, this voltage will not be transferred from the ignition coil to the spark plugs, and the fuel will not be ignited. Depending on how many of your ignition cables malfunction, your car will either run poorly, or won’t run at all.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercury mechanics

Real customer reviews from Mercury owners like you.

Excellent Rating

(1,341)

Rating Summary
1,257
48
9
6
21
1,257
48
9
6
21

Patrick

33 years of experience
1378 reviews
Patrick
33 years of experience
Mercury Sable V6-3.0L - Ignition Cable (Spark plug wires) - Austin, Texas

Richard

11 years of experience
265 reviews
Richard
11 years of experience
Mercury Mariner L4-2.3L Hybrid - Ignition Cable (Spark plug wires) Replacement - Franklin, Tennessee
Richard arrived on time and completed job in a timely manner. He was courteous and friendly. I would definitely use Richard again.

Willie

24 years of experience
104 reviews
Willie
24 years of experience
Mercury Sable V6-3.0L - Ignition Cable (Spark plug wires) - Torrance, California
He was very professional courtesous.

Christopher

20 years of experience
295 reviews
Christopher
20 years of experience
Mercury Cougar V6-2.5L - Car is not starting - Zephyrhills, Florida
Very punctual, very patience and thorough. Made it easy to hear the bad news.

Excellent Rating

(1,341)

Rating Summary
1,257
48
9
6
21
1,257
48
9
6
21
Number of Mercury services completed
14751+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercury MECHANICS
600+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Headlight Bulb
If the headlights are dim, flickering on and off, or will not come on at all, you may need to replace the headlight bulbs.
How to Get Paint Off Your Car
Removing car paint is necessary when repainting or restoring an older car. If you’re asking a professional to repaint or restore your car, then you won’t need to worry about doing it yourself. However, if you’re working on your car...
How Does the Warranty Work?
Car Car repair is precise work because each part has an impact on both the overall functionality of the car as well as the other individual parts. If a mechanic replaces your leaking radiator hoses, the freshly sealed cooling system...

Engine light flashing. Car not getting speed and putting out

The Check Engine Light is flashing to tell you that you should get to a safe stopping point so you do not damage the engine or the catalyst of the car. The Check Engine Light does not tell you what...

Misfire in cylinder 6. GMC Sierra 1500.

Hey there. You need to have the engine compression tested to see if you have a leaking valve or rings. You could try to have the combustion chamber cleaned of carbon and see if the problem improves. This may be...

Grinding/rubbing sound in rear drum break, replaced assembly inside and lathes drum, sound continues and louder as speed increases

The noise may not be coming from the brakes at all and is coming from the rear hub bearings. Try to remove rear calipers and rotor and turn hub to see if you feel any binding. If you do then...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com