Ford F-250 HD 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

(11)

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

(11)

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Ford F-250 HD Spark Plug Replacement is $135 with $40 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1997 Ford F-250 HDV8-7.5LService typeSpark Plug ReplacementEstimate$195.63Shop/Dealer Price$225.79 - $293.77
1997 Ford F-250 HDV8-5.8LService typeSpark Plug ReplacementEstimate$175.63Shop/Dealer Price$205.81 - $273.80
1997 Ford F-250 HDV8-7.3L Turbo DieselService typeSpark Plug ReplacementEstimate$566.31Shop/Dealer Price$665.32 - $892.49
Show example Ford F-250 HD 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 Ford mechanics

Real customer reviews from Ford owners like you.

Excellent Rating

(11)

Rating Summary
9
1
0
0
1
9
1
0
0
1

Excellent Rating

(11)

Rating Summary
9
1
0
0
1
9
1
0
0
1
Number of Ford F-250 HD services completed
121+
services done by our mechanics
TOTAL NUMBER OF EXPERT Ford MECHANICS
1700+
experts on our platform

Recent articles & questions

How the Parking Brake Works
A parking brake (also known as an emergency brake) is part of the vehicle’s braking system. You will see a...
P0554 OBD-II Trouble Code: Power Steering Pressure Sensor Circuit Intermittent
P0554 means that the PCM didn’t receive a voltage indicator from the power steering pressure sensor often due too a faulty sensor or poor circuitry.
How Much Does a Mechanic Make in Nevada?
Automotive technician jobs in Nevada have an average mechanic salary of $40k, while the national average is roughly $37k.

Front suspension shaky.

You need to have the front lower control arms checked for worn out bushings and ball joint. The struts may be worn out also. The rear tires should be checked for balance or damage. I recommend having a qualified mechanic,...

Recently I had new tires put on my car and I was told my bushings need to be replaced on the front left tire

I would recommend getting a second opinion on any work you suspect will be needed on your vehicle. A qualified mobile technician, such as one from YourMechanic, can run a thorough diagnostic on your suspension system (https://www.yourmechanic.com/services/brakes-steering-and-suspension-inspection) at your home...

2006 suzuki florenza drjving fine one second to the next it starts idling rough shuts down at stop, next shuts off while idling

Hi There, It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate and eventually stall. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) is a small valve on the engine's intake system...

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