Spark Plugs

[mazdaspeedjamie]

I know this one has been discussed a hundred times over, but I'll bring it up again. I am at 30,000 miles on my 03.5 MSP. It is time to change the spark plugs. I am looking at two brands: NGK and Denso. I am thinking iridium over platinum. Please give me your opinion (feel free to back it up with facts). My car is stock except for an Apexi Turbo Timer (auto timer). I run 5W-30 Mobil 1 Synthetic and 93 octane fuel.

 

[FlyinMSP]

Go for Denso Iridium (IK20 if stock or IK22 for colder)! I've tried lots of plugs (platinium, Copper, Iridium, Silver). Denso are the best IMHO. Better throttle response, engine purrs with them.

 

[loopalou]

hello out there
i am trying to change the plugs in my protege 2000 dx so where are they located and how do i get there duh!

 

[Tommy1005]

first of all if you don't know where your spark plugs are, then you shouldn't be trying to change them, you'll end up over tightening and doing more harm than good