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2004 Mazda RX8 runs like a 2 stroke

Tiny
JUNIORM321
  • MEMBER
  • 2004 MAZDA RX8
  • 4 CYL
  • 2WD
  • MANUAL
  • 8,200 MILES
My sons car b4 he left started running like a 2 stroke once in a while.I drove it down the road ran rough then cleaned out after 30 mph. Turned around and got home and noticed that the catylic converter glowing red hot and that was only 3 min of driving. Local mechanic said put new plugs in and had low compression in 2 cyl? Not sure My question, posible to replace o2 sensor or really need new engine. Thank you
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Thursday, September 30th, 2010 AT 3:41 PM

1 Reply

Tiny
MABELE87
  • MEMBER
  • 6 POSTS
For starters its not a 4 cyl its a rotory engine no cylinders just two rotors, four pluges. As for you problem its seems to me that the cat would be pluged up. These motors are bad for carbon build up and id say that the carbon has also built up in the cat and pluged it. To resolve it get whats called a decarb done to it and maybe it will clear up the build up and maybe replace the cat. And beat on it every once in awhile to clean it out.
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Friday, March 4th, 2011 AT 3:54 AM

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