Help
 

Can someone tell me where to post a question about a misfire cod on my or Rx 8

whats your question

Post here new guy.

Start with ignition coils, wires and plugs if they haven't been done.

Cylinder 2 misfire code
 

Just purchased my first Mazda RX8 2004 I have a cylinder 2 misfire code pulled all plug wires off coil packs one at a time all coils are firing can anyone give me any suggestions where to go next

How old are the coils? Just because they are firing doesn't mean they are firing strong sparks.

Help
 

New coils new plugs and new wires still have a misfire code on cylinder 2

New spark plugs?

With the ignition components out of the way...

Is the car still misfiring with flashing CEL? Unplug the battery, wait for a couple of minutes, reconnect and see if the code comes back.

Also, if you still have the factory cat, that should also be looked at. Could be clogged.

any oil in the intake? its probably a good idea to clean the maf, eccentric shaft sensor and do the 20 brake stomp. as jinx said check your cat

Help
 

Okay unhook the battery hooked it back up cell is still flashing and code came back I've replace the wires the plugs and the coil packs I've already checked the cat it is not clogged. I am new to these cars how do I clean the mass airflow sensor shaft

Mass Airflow Sensor is cleaned using special MAF cleaner (most parts stores will have this). Other cleaners will damage it. The MAF is just after the intake airbox. Just be sure to close it all back up nicely, you don't want air leaks there.
The Eccentric Shaft Position sensor just needs a wipe, it's at the bottom of the front of the engine. I would do the 20-time brake press exercise first, because it's easiest. Key to ON but engine off, press the brake pedal repeatedly until the oil pressure gauge sweeps on its own once. This clears the computer's long-term memory and lets it relearn the sensors from the beginning.

Does it misfire at idle? or only at high RPM? Or all the time?

Help
 

thanks for the advice I will try those things and get back with an answer. And yes it misfires all the time

Oh yeah, and make sure you don't strip the MAF threads. But if you do, you can use some JB Weld to fix it.

Help
 

Okay try the brake pedal press to reset the computer my oil pressure gauge never moved press the pedal over 60 times. Any advice

I think you need to get 20 presses in within 8 seconds or so. Here's a video to illustrate, including the oil needle sweep.

I have read that the oil needle sweep only happens after a certain flash of the ECU for S1. If the OP never updated the flash in his ECU, it won't have the sweep.

Help
 

Okay I am still at a loss I have tried everyone's recommendations and have not succeeded with anything I have now changed the plugs, change the coil packs, change the wires, tried to brake pedal reset with no luck, and also clean the mass airflow sensor still have the flash n c e l while driving. It will randomly Flash go out drive a few miles and come back on flashing. I'm about ready to pour gas on top of it and sling a match at it it's getting very frustrating still have cylinder 2 misfire pending

where are you located?

This leaves one question: have you done a rotary-specific compression test?

Other than ignition failure, it's hard to imagine many reasons for just one rotor to misfire. The other possibility is just that your rotor 2 seal(s) are shot.

Help
 

I am located in Rutherfordton North Carolina. I have not had a compression check done but driving the car it has great horsepower it's definitely not lacking in that area

It can feel great until a Honda Civic passes you with no effort. An engine with low compression can feel fine when you rev it up enough. That's why the cranking RPM is included in the compression test.

Here are the possible causes out of the FSM.

https://cimg7.ibsrv.net/gimg/www.rx8...f8b76439d2.png

Help
 

Can anyone tell me where the factory radio amp is located in my 04

I think it might actually be in the trunk!

I have lost all my manuals in a hard drive crash.

And.................why are you posting here?

Help
 

Already checked there only thing in there is the speakers. And where was I supposed to post it

Try this for a start

https://www.rx8club.com/series-i-int...lifier-216779/

Read from the bottom up. I'm sure there is more info somewhere if you search for it.