Engine When to change spark plugs?

When to change spark plugs?

hey i bought my car brand new in 2001 and i have driven the car 48,000 miles now, i still have the stock denso iridiums in it but is it almost time to change them? also wut other things should i do to make the car run smoother?

If it is a Corolla the plugs are supposed to last 100K but should be changed between 60-75 k to keep them from seizing in the heads, Go only with OEM original plugs $13 each.

There are no plug wires, distributer or rotor button to change on these models.

The anti-freeze is supposed to last 30k Transmission service at 60k

CW

I can vouch for them being good through 100k. I didn't even thing about changing them until it started to miss, then I did. I got my plugs OEM for under 5 a peice

If you were to take them out and re-install them (maybe w/antiseize) they may easily last until 100k, I just was worried about not getting them out.

$5 each is a good price for OEM Iridiums !!!

CW

i would change them when they're fouled out