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1994 Nissan March failed car test (nct)

Tiny
MELO-CAKES
  • MEMBER
  • 1994 NISSAN MARCH
  • 1.0L
  • 4 CYL
  • FWD
  • MANUAL
  • 70,000 MILES
Hi ive failed my car test on my nissan march (micra on logbook) on emissions from high idle at CO 0.076% volume and the maximum is 0.30%, im suggesting its the cat converter but not too sure?
Monday, February 9th, 2015 AT 3:18 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Are there any trouble codes and is the Malfunction Indicator showing?
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Friday, February 13th, 2015 AT 6:10 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
It sounds like to me you have a fuel pressure regulator that is leaking, I would remove the vacuum line from it and if there is fuel present the regulator is bad and needs to be replaced. Here is the location so you can check it out. Check out the images (below). Let us know how it goes
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Saturday, July 6th, 2024 AT 6:22 PM

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