How long before i have to change the spark plugs on a 2001 honda accord with 174,000 miles? - 1

How long before i have to change the spark plugs on a 2001 honda accord with 174,000 miles? - 2

If it has platinum plugs every 60,000 miles.
If Iridium plugs were put in they go a good 90,000 miles. If they were never changed you'd know it by now!

If the engine starts missing it's time to change the plugs. Mine has gone 166,000 and still works fine.

They should have been changed no later than 100,000 miles of if it was missing. If you have never changed them do it today.