Good evening Mr. Lamar and other rotary people,

 I have a starting problem with my rx8, 2004, hi-power version. 108 000
 KM.
 My car will not start. I replace apex seals and all parts which was bad,
 but engine not start too.  I replace starter 2004, e-shaft position
 sensor, igniton coil + cables, spark plugs, knocking sensor, throttle
 body activator,  SSV actuator,. Engine allways wont start, but  when we
 pushing car, on 10 metres car start, and car drive ok, but engine has a
 unstable idle, 750 -1500.
 Please help me.
 Jaroslav Dibala

 You need to get an OBD II program for your PC computer and a special
 cable that connects to the OBD II connector under the dash.
 That will tell you what is wrong.
 Obviously none of the stuff you changed so far was the problem.

 http://www.scantool.net/
 http://www.obdsoftware.net/
 http://www.myscantool.com/
 http://www.obddiagnostics.com/
 http://www.obd-2.com/
 http://www.autotap.com/
 http://www.obd2crazy.com/

 Paul Lamar

Thank you very much, but I was on PC in Mazda service. PC tell me that
range of ex.shaft position sensor is bad, and second rotor has not good
combustion.
Jaroslav Dibala



Well if the shaft sensor is bad the engine will not run.

The latest thinking on early 2004 2005 RX8 problems is the newly
designed coils
were misfiring allowing the unburnt fuel to wash the apex seal oil
out of the engine. Check the coils that you have now.
If the part number marked on the side of the coils is not
followed by a "B" replace the coils.

If the rear rotor compression is still low the engine
will need to be over hauled. With less than 100,000
miles (not kilometers) it will be done by Mazda
for free.

Paul Lamar

Hi Jaroslav,   I am not a rotary mechanic, but, it sounds to me that you
should check, a - check the voltage to the ignition system, while
attempting to start the engine, b,- check the voltage at the starter,
while attempting to start the engine. It sounds to me that there is not
much wrong with the engine if it will start and run whilst push-starting
the car. It is probably electrical because it will not start on the
starter.
     John Burey.

John, the wrong name was attributed to the original message so I changed
your response to correct that. Jaroslav Dibala  is the correct name.

Good call. I don't know why I did not think of the obvious.
I guess personal cars are rather new in the Slovak Republic
or perhaps Jaroslav is a new and inexperienced mechanic.
Those of us here in North America and Western Europe grew
up with cars since Henry Ford. We take certain car knowledge for
granted.

Paul Lamar


I´m not a new mechanic :).
I make some rx 8 engine with p-port too. Voltage is o.k.,  Next problem
is idle, is unstable between 750-1500 rpm.

Jaroslav Dibala

Are you using the stock computer with a p-port?
That is unlikely to work.

Paul Lamar