Mercury Capri Spark Plug 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

(12)

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

(12)

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Mercury Capri Spark Plug Replacement is $109 with $14 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1983 Mercury CapriV6-3.8LService typeSpark Plug ReplacementEstimate$209.31Shop/Dealer Price$242.89 - $321.13
1994 Mercury CapriL4-1.6LService typeSpark Plug ReplacementEstimate$131.23Shop/Dealer Price$150.31 - $185.00
1986 Mercury CapriV8-5.0LService typeSpark Plug ReplacementEstimate$145.87Shop/Dealer Price$168.61 - $214.28
1993 Mercury CapriL4-1.6L TurboService typeSpark Plug ReplacementEstimate$131.23Shop/Dealer Price$150.29 - $184.96
1985 Mercury CapriL4-2.3LService typeSpark Plug ReplacementEstimate$123.79Shop/Dealer Price$141.02 - $170.15
1980 Mercury CapriV8-4.2LService typeSpark Plug ReplacementEstimate$220.75Shop/Dealer Price$262.21 - $364.04
1984 Mercury CapriV8-5.0LService typeSpark Plug ReplacementEstimate$195.99Shop/Dealer Price$229.87 - $309.28
1985 Mercury CapriV6-3.8LService typeSpark Plug ReplacementEstimate$143.19Shop/Dealer Price$164.24 - $204.34
Show example Mercury Capri Spark Plug Replacement prices

What are spark plugs and how do they work?

Spark plugs are one of the key components of your vehicle’s ignition system. They ignite gasoline and air inside of your engine. This gives your engine the power to propel you down the road. The spark plug takes high voltage electricity from the ignition coil and creates a spark at just right moment during the engine’s combustion cycle. This gives the engine the best mix of power, fuel economy and low emissions. However, the electrode at the end of the spark plug eventually wears out and can cause performance issues.

Spark plugs-MATROX-1

When should you replace spark plugs?

Replacement should follow the vehicle maintenance schedule. This will be listed in the vehicle’s owner’s manual. Some cars require regular replacement at 30k, 60k or 100k miles. It is possible in some cases that a spark plug might fail before the service schedule, but it’s not typically common.

Avoiding spark plug replacement can cause:

  • Difficulty starting your car.
  • Check engine light for a misfire code.
  • Flashing check engine light during acceleration for misfire, this can cause engine damage.
  • Reduced fuel economy and/or power.
  • Rough idle and/or unexplained engine vibration.
  • Failed State emission testing.

Even if only one spark plug is found to be faulty, they should always be replaced in sets. Most engines will require 4,6, or 8 spark plugs.

How do mechanics replace spark plugs?

Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will:

  • Have the correct spark plugs on hand for your vehicle
  • Pull any diagnostic trouble codes that may be related to worn spark plugs.
  • Remove the original spark plugs and look at removed spark plugs for any clues indicating engine mis-operation exists; such as oil burning, excessively rich mixture, pre-ignition damage etc. Inform owner of any found unusual conditions.
  • Install new plugs using a torque wrench.
  • Finally, a road test of the vehicle to confirm normal operation.

Is it safe to drive with worn spark plugs?

Yes, but spark plugs that are worn enough to cause engine-misfiring have the potential to cause engine damage and overheating of the catalytic converter. Regardless of the age of the plugs, or mileage, if the engine misfires or runs poorly, the plugs should be inspected for defects. Generally, spark plug failure will not keep the engine from running, but in cases of extreme wear, you may experience a limitation in the speed at which you can drive the car. If the maintenance schedule says the plugs should be replaced, it is best to do so promptly.

When having spark plugs replaced keep in mind:

  • High-speed driving may accelerate spark plug wear. Consider earlier than required inspection and tune-up if you operate the car in severe conditions.
  • Plugs should always be promptly replaced per the manufacturer maintenance schedule even if they appear to be working perfectly.
  • If your vehicle is equipped with spark plug wires (as opposed to a coil-on-plug system), the wires should be replaced at the same time. This may increase the cost of your repair.
  • It is possible that when doing a spark plug replacement, your vehicle may also need additional parts like ignition coils, this will add to the repair cost.
  • Some engines require that the intake manifold be removed while replacing spark plugs. This may increase the parts and labor cost for the repair.
  • Leaking valve cover gaskets, which have let oil get in contact with the spark plugs, coils or wires, may be the cause of ignition system issues. Valve cover gaskets will need to be replaced in addition to the spark plugs, wires or coils. This will add to the repair cost.

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

(12)

Rating Summary
12
0
0
0
0
12
0
0
0
0

Andrew

11 years of experience
841 reviews
Andrew
11 years of experience
Mercury Capri L4-1.6L - Axle / CV Shaft Assembly Replacement (Driver Side Front) - Shawnee Mission, Kansas
He was a little behind schedule but that was expected as it was raining all day long. i really did not expect him to come because of the rain. He put in the CV shaft in no time and was on his way. Excellent job!!!!

Robert

20 years of experience
1089 reviews
Robert
20 years of experience
Mercury Capri L4-1.6L - Ignition Coil Replacement - Denver, Colorado
Excellent service. The speed, quality, convenience, and price has prompted me to user YourMechanic more often than a traditional shop.

Gary

27 years of experience
226 reviews
Gary
27 years of experience
Mercury Capri L4-1.6L Turbo - Battery - Oakland, California

Damian

11 years of experience
430 reviews
Damian
11 years of experience
Mercury Capri L4-1.6L - Fuel Pump - Clermont, Florida
Amazing. Very kind and fast. Excellent work.

Excellent Rating

(12)

Rating Summary
12
0
0
0
0
12
0
0
0
0
Number of Mercury Capri services completed
132+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercury MECHANICS
600+
experts on our platform

Recent articles & questions

How to Buy a Good Quality Ignition Cable (Spark Plug Wires)
Spark Spark plug wires connect the spark plug to what they’re creating a spark in. Whenever you are changing out your spark plugs, it’s a good idea to check on those spark plug wires to be sure they’re up to...
How Long Does a Water Pump Pulley Last?
The The pulleys and drive belts on a car help to ensure that everything is getting the power it needs. Without these components working properly, a car will usually not be able to run at all. The water pump pulley...
P0613 OBD-II Trouble Code: TCM Processor
P0613 means there is an malfunction within the transmission control module often due too shorted, electrical wiring or harness.

What does the system message notification mean?

If your car is equipped with an information center, you’ll occasionally see messages come across the screen. These range from things like maintenance reminders to information about problems with your vehicle’s systems. You should see the notification system come on...

won't start hot cable

Hot electrical cables or connections indicate either excessive current flow, or excessive resistance in a connection. Test the battery (https://www.yourmechanic.com/article/how-to-check-a-car-battery) first. All battery cable connections should be clean (https://www.yourmechanic.com/article/how-to-clean-battery-terminal-connections-on-a-car) and tight. You should not be able to move cables by...

My heater stops blowing air. It will work sometimes and then stop working. It’sa got out miss. I’ve had the blower and resister replaced, I’ve also had the coolant flushed out and replaced. After the blower and resistor were replaced it worked for about a week and then with working. After the coolant was flushed out and replaced it kind of worked. Then yesterday morning it worked all the way to work and then I parked it and it stopped working. It’s weird

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