SMOKING

Tiny
POMY
  • MEMBER
  • MAZDA 929
HI MY GIRLFRIEND HAS A 1983 MAZDA 929 4CYL.2L
THE NO1 CYL PLUG KEEPS OILING UP AND BLOWING GREY SMOKE.(RINGS?) SO I PUT A COMPRESSION TESTER ON IT AND GOT A 200PSI READING ON IT. THERE IS NO EXESSIVE CRANKCASE PRESSURE. IS IT POSSIBLE TO HAVE RINGS THAT WORN, TO LET OIL THROUGH, AND STILL HAVE 200 PSI.A MECHANIC CHANGED THE VALVE GUIDES SEALS, (HEAD STILL ON) DIDNT MAKE ANY DIFFERENCE, MABY WORSE.
ANY IDEAS? CHEERS.
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Friday, November 24th, 2006 AT 10:30 PM

2 Replies

Tiny
MWHITNEY
  • MEMBER
  • 63 POSTS
Is the oil puddling up on top of plug or in cylinder?
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Thursday, December 21st, 2006 AT 1:32 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Oil passing thru rings excessively-will carbon-up the combustion chamber and will create your high pressure
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Friday, December 22nd, 2006 AT 3:29 PM

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