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


no, no... i have a p-port engine in another car with racing ECU, it
works perfectly.

I'll try to replace oxygen sensor.
Thank you very much.

Jaroslav Dibala