Hey everyone,
I recently purchased a 2004 rx-8, 112000 km, manual trans.
the car runs great, lots of power, nice idle ect... but after about 30 mins or so of driving, the car has a major loss of power, stutters, and shakes alot more then usual at idol, even has a hard time taking off from a set of lights. theres also a small squeeking sound accompied, mind you its been over 30c out since its been doing it too... Theres no error codes or lights coming on. i called mazda to get some info on the car; its been up to date with all its services, never had the engine change or any major problems.... ive read throguh the forums a little bit and to me sounds like electrical ( coil, wires and plug change) or the engines junked... lol hopefully the engine inst scrapped ... i know i didnt give you guys alot to work with, but thats the best i can explain it... any help would be much appreciated
Thank you.

 

Check your Catalytic Converter. Might be plugged. The cause would be bad ignition coils/wires/plugs. When were they changed? If ever.

 

the plugs were changed just under 100 000, and the coils and wires never... according to mazda anyways... ive only have the car for a little under 2000km so im not completely sure on the entire history

 

Tried adding octane boost today for fun ( the highest fuel i can find around here is 91) seemed to help quiet a bit... Im going to order the agency power full exhaust system, new plugs wires and coils next week and hopefully that should eliminate any problems.... Any one have any suggestions on what plugs wires and coils i should order?

 

BHR ignition if you can afford it. Order it with a set of plugs. One stop shopping!
http://www.blackhaloracing.com/colle...nition-upgrade

If not then Mazda coils and RacingBeat wires.