When to change spark plugs?

[charlieeng]

I have never had the sparkplugs changed on my 2001 Escape XLT 4WD, does anyone know or have an opinion on when they should get changed?

Have 36K miles on it and run with 87 octane regular gas.

How often should they be checked for gap?

[mark v]

I think 100,000 miles they last. However I have never seen these plugs last longer than 95,000 miles with out throwing misfire codes.

You never need to check for gap.

[deimos]

For Best fuel economy and performance change them once a year regardless of mileage.

[mark v]

This Man clearly has stock in Companies that make Sparkplugs.

Originally Posted by deimos

For Best fuel economy and performance change them once a year regardless of mileage.