How to reduce High HC reading from Smog Check

A Q45 forum / Cima forum for the President of Infiniti's lineup. Brought to you by Infiniti Parts USA, your OEM source for Q45 parts!
Post Reply
94 Q45
Posts: 38
Joined: Sat Aug 19, 2006 8:37 am

Post

Hi, I bought a 94 Q45 and recently I got a reading from smog check and the HC level was near the maximum level. I want to know how can I reduce the HC level, also the car's MPG was not great, so I think the high HC is the cause, or maybe fuel injector is leaking or the fuel pressure regulator or fuel filter is bad. I have changed the air filter, spark plugs and clean the MAF sensor recently. Thank you for your thought.

Top
maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

Post

O2 sensors? Intake path?
Top
Post Reply

Return to “Q45 Forum / Cima Forum”

Search for Nissan stuff on ebay!
Find Your Forum!

 

NICOclub's Nissan forums and Infiniti forums and all affiliated sites are the property of HDS Holdings, Inc.
They are independent publications and are not affiliated with or endorsed by Nissan or Infiniti.

Information Copyright © 2000-2026 by NICOclub, all rights reserved. Material may not be copied or reprinted without written permission.

Privacy Policy