Spark plug change

[roadrunner68]

Hi, according to my porsche hanbook plugs on my Boxster 3.2S should be changed every 4 years or 48,000 miles. It's now 4 years since the last change but the cars only done 28,000 miles in that time.

Is it worth changing them? It starts & runs fine.

[N41EF]

Just my two cents, Spark plugs used to be an every 20k miles things, before all of the platinum and iridium. Even at 6 or 8 dollars a pop, I replaced mine at the 60k service point like the book said, just so I didn't have to worry about them later on. Plugs tend to degrade slowly as they burn or wear and the computer changed to compensatae for them.

They are cheap, replace them when the book says to.

Also, if I'm buying a car, and the simple things like plugs havent been maintained, what else did not get done?

[roadrunner68]

Your right, i will change them i think.