Question about 2003 Nissan 350Z

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WONT SMOG After replacing piston rings because it was burning oil but wont pass smog because high emissions.

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Wrong arrangement of piston rings affects intire performance of an engine. and must see that.
have you calibrate your injection pump? and change your injectors?
have a shop with scan-tool diagnose the problem.

Posted on Feb 08, 2012

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Posted on Jan 02, 2017

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budgie140
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SOURCE: 1988 nissian maxima wont pass smog emissions way

its 22 yrs old,engine worn out more like,not combusting the petrol/air mix properly.

Posted on Jul 08, 2010

HondaCRX
  • 252 Answers

SOURCE: I have high emission on my 1998 nissan quest how

Hi there

There are a few ways you can do this:

Use ultra-low sulphur fuel (not sure if the US has this but the UK does).

Change or clean out the air filter (check my profile for a how-to)

Make sure the EGR valve is connected up properly. This is the exhaust gas recirculating valve, located on the intake manifold. Unbolt is, clean it out with a wire brush and carb cleaner, refit.

Get the Nissan checked again, if it is still high, the catalytic converter could be due a change, especially as it will be 12 years old.

Hope this helps, please vote if so. Thanks :)

Posted on Jul 13, 2010

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