What's involved
What this repair actually is.
We remove the old spark plugs, inspect them for signs of engine trouble, and install the correct new plugs torqued to spec. Plugs wear out gradually, so the drop in performance often isn't obvious until new ones go in.
Symptoms
How you can tell.
- Rough or shaky idle
- Sluggish acceleration
- Worse gas mileage than usual
- Hard starting, especially in cold weather
- Past the mileage interval in your owner's manual
If you delay
Worn plugs strain the ignition coils and can cause misfires that damage the catalytic converter.
Maintenance tip
Iridium plugs typically last 60k–100k miles.
Educational estimate. Real pricing depends on your vehicle, the inspection, parts availability, taxes, and shop rates. Use this as a guide while you shop quotes.
Related