RotaryZZ

According to the user manual, I'm supposed to change out the old spark plugs at the 35k miles which is fast approaching on my 8.

How different/difficult is it to DIY as compared to the regular piston engine? Anything in particular that I should look out for or any special tools that I'll need for the job?

As for the spark plugs, should I buy the the OEM plugs from the Mazda dealers or are there better/cheaper alternatives out there? Btw, do we need 4 plugs for our engine??


TIA,
Pete

dozer

iTrader: (3)

hmmm ^in the search function on the top, type in "spark plugs"

ywia
dozer

invasion08

iTrader: (7)

there are great DIY's on the rx8club. I would buy the stock plugs but do not buy them from the dealership. Either www.amazon.com or www.autopartswarehouse.com

dozer

iTrader: (3)

https://www.rx8club.com/series-i-do-yourself-forum-73/diy-spark-plug-change-31872/page9/

here since you probably havent found it yet

if you go to post 202 on pg 9, a forum member found a good place to buy the plugs for a great price

I8U

iTrader: (1)

My head hurts...and actually you should really look into changing your plugs every 15-20k miles. I do atleast and probably more than most here do the same.

TheWulf

iTrader: (4)

Buy the plugs from BHR. I believe they are $80 shipped regular price and $72 shipped if you buy their coils. Awesome price and top notch service.

PM "Charles R. Hill" to order a set.

TitaniumRotor04

Buy the normal stock spark plugs(four total) recommended for the RX8 nothing with less performance and buy them anywhere but the dealership you will always find them cheaper. As for difficulty it would help you you have very small hands! But if you don't a normal socket tool set will work with different size extensions and of course the right size sparkplug socket....take the driver side wheel off and look for the rubber flap and move it out of the way hope this helps. (having a 13/16 open ended boxed end wrench will help also)

invasion08

iTrader: (7)

I little tip to make it even easier to remove the spark plugs next time you change them. Add a little bit of anti seize to the new spark plug threads.

Low Fly'n 8

Be aware that the trailing and leading plugs are different types with different part numbers. You need 2 of each and they need to be installed in the proper locations. The OEM plugs are as good as it gets but DO NOT purchase from dealer unless you enjoy being ripped off. Easiest way is to remove driver's side tire and use a few feet of extensions. A "wobble" extension helps also. Start to finish 15 minutes. Don't forget the anti-seize and torque wrench.