How often do you change your spark plugs?

[shallowreef]

My car is about to hit the 50k in a few months and i am curious when i should replace the plugs? Car seems lke its not running as msooth as it should be so i am wondering if new plugs will help or not?

Do you guys have a preference on which brand of sparkplug you like to use?

 

[shallowreef]

bump

 

[ran260gt]

I just turned 50,000+ myself and was wondering the same thing !

Ford recommends 100,000 , the seems a little long to go for me , as a former small black chevy guy I used to change plugs every few months , but the chevys I raced ate plugs (and transmissons for some reason ) quick !

 

[shallowreef]

I guess no one changes their spark plugs.

 

[Killa]

change when ever u fell like it, like one a years with coper plug.

 

[Flghtmstr1]

I changed mine at 50k, and noticed practically no difference. The plugs looked fine when I took them out. If anything, it felt like my car lost a little power with new plugs.

 

[1992 2.3LX]

I changed mine at 75,000 miles.
Plugs are cheap and they aren't going to hurt you if you change them.
Just do it.
If the car hasn't been running as smooth may as well change the fuel filter and do a Seafoam.

 

[BennyBlown2v]

I've changed mine every 6k miles...or 6-8 track events.

 

[Mustang5L5]

57K miles here...original plugs still. It runs smooth and doesn't misfire. I have a new set of plugs...but not in a rush to change them.


By the way, the stock plugs are platnium. While not the best for performance, you won't really notice a dif on a near-stock street car.

Motorcraft SP-493's are the OEM plug, gapped at 0.054"

 

[joshheat25]

I changed my plugs at 55,000 then at 115,000 went to copper at 115,000 will probobly change every 10-15K

 

[AdRock]

I switched to coppers on the last change and plan on changing them every 20k.

 

[salstang]

Platinums 60k
Copper 20k

I have copper in my car I change em once a year as I drive 18-19k miles