Mercury Cougar Spark Plug Replacement Costs

Estimate price near me

Service Location

Customer Ratings

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.

See availability

Customer Ratings

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Mercury Cougar Spark Plug Replacement is $105 with $10 for parts and $95 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1970 Mercury CougarV8-5.8L	Service typeSpark Plug Replacement	Estimate$222.67	Shop/Dealer Price$259.59 - $347.85
1988 Mercury CougarV8-5.0L	Service typeSpark Plug Replacement	Estimate$163.95	Shop/Dealer Price$191.21 - $250.44
1995 Mercury CougarV6-3.8L	Service typeSpark Plug Replacement	Estimate$200.59	Shop/Dealer Price$237.01 - $323.72
1970 Mercury CougarV8-7.0L	Service typeSpark Plug Replacement	Estimate$573.56	Shop/Dealer Price$694.95 - $1023.13
1974 Mercury CougarV8-6.6L	Service typeSpark Plug Replacement	Estimate$220.75	Shop/Dealer Price$262.22 - $364.07
1997 Mercury CougarV6-3.8L	Service typeSpark Plug Replacement	Estimate$200.59	Shop/Dealer Price$237.01 - $323.72
1981 Mercury CougarL4-2.3L	Service typeSpark Plug Replacement	Estimate$162.87	Shop/Dealer Price$188.47 - $243.04
1969 Mercury CougarV8-6.4L	Service typeSpark Plug Replacement	Estimate$581.56	Shop/Dealer Price$703.37 - $1031.86

Show example Mercury Cougar 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

(4)

Rating Summary

4

0

0

0

0

4

0

0

0

0

SEE REVIEWS NEAR ME

Excellent Rating

(4)

Rating Summary

4

0

0

0

0

4

0

0

0

0

SEE REVIEWS NEAR ME

Recent articles & questions

What Is the Difference Between the Upper and Lower Radiator Hose?

Your Your radiator is an essential part of your automobile. It does more than just hold the bulk of the car’s coolant, though. It’s actually responsible for removing excess heat from the coolant before it is sent back to the...

How to Buy a Good Quality Performance Air Filter

Unlike Unlike cheaper paper air filters, performance filters are made of either foam or cloth (typically cotton). They’re more expensive, but they also last longer, in fact, depending upon the type and use level, a performance air filter may last...

North Dakota Parking Laws: Understanding the Basics

When When you are driving in North Dakota, you need to know more than just the rules of the road. You also need to know the rules of parking to make sure that you do not park in a location...

2002 Buick LeSabre overheated and now won't start

Hi, Your engine most likely has major head gasket failure and possible oil pump failure also. Running for a long time with the oil light on could have caused major internal failure of the bearings if the light being on...

Transmission

Hello there, The Chevy Aveo most certainly does come with a 4 speed automatic transmission. The 5th gear you may be feeling is the overdrive function of the 4th gear. 18 mpg seems quite low for this size of vehicle...

Grinding noise while driving and turning right.

The origin of the noise should be apparent to a mechanic once he or she road tests the vehicle. If not, installing remote wireless chassis ears at a few key spots in the front end will pinpoint the origin of...

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