other causes for high readings

1994 MAZDA PROTEGE
284,000 MILES • 4 CYL • FWD • MANUAL
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SALLIE
  • MEMBER
  • 3 POSTS
fail smog after replacing most emissions parts then the shop say it's cat now they say i need new engine high h/c and c/o they claim i'm burning oil internally allow i am not showing symptom other than cold start smoke please advise my car run wonderful and has lots of pep
Nov 18, 2010 at 4:13 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,761 POSTS
They could be correct. It could be fuel or oil and you wouldn't necessarily see symptoms.
Nov 18, 2010 at 4:50 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Have the air injection system checked out
Nov 18, 2010 at 4:54 PM
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