HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Failed CA Emissions (turbo motor)

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Failed CA Emissions (turbo motor)

Post  Bluemach1 on Fri Aug 05, 2011 3:36 pm

Took my 951 in for its 2 year California emissions test and failed the 25 MPH NOx test (barely passed 15MPH test). I had it tested 2 years ago, passed the test, drove it home and parked it. I have maybe 10 miles on it since then.

My readings are now:
@ 15MPH max. 1069 meas. 1066
@ 25MPH max. 669 meas. 718

Everything else is way in spec.

I drove the car some, not a lot before test.
I DID NOT put fresh gas in it.

Why would this fail NOx if it just sat for a couple of years? So for the NOx, this is mainly attributed to the Cat, right? Will monkeying with fuel (add acetone, etc) help with this?

Whattya think?

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Re: Failed CA Emissions (turbo motor)

Post  xschop on Fri Aug 05, 2011 3:47 pm

If it sat a long time with Etoh gas then I would completely drain it, add fresh gas plus 3 0z/10gal acetone and make sure your timing and plugs are good. High NOx is due to a high temp combustion and either timing is the culprit or clogged injectors can lean the mix causing high temp combustion.
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Re: Failed CA Emissions (turbo motor)

Post  Bluemach1 on Fri Aug 05, 2011 3:53 pm

To pass last time I replaced the plugs, cap, wires, O2 sensor, IAC, had injectors rebuilt by witchhunter, replaces all of the vaccuum lines with silicone, lindsey racing venturi delete, on and on and on... essentially everything related to the emissions....

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Re: Failed CA Emissions (turbo motor)

Post  xschop on Fri Aug 05, 2011 4:01 pm

Leave ethanol in a solution of long chain hydrocarbons for even 2 weeks and organic acids begin to form and jack up your fuel lines, clog injectors, deteriorate aluminum....
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Re: Failed CA Emissions (turbo motor)

Post  Bluemach1 on Fri Aug 05, 2011 4:08 pm

AH, ok. I will run through some fuel here (I just filled up with 91 after teh test). Need to add some acetone as you suggest. Will any of that stuff from the parts store work for this (guaranteed to pass stuff)?


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Re: Failed CA Emissions (turbo motor)

Post  xschop on Fri Aug 05, 2011 4:14 pm

Smell it, I bet it smells like fingernail polish remover. I run acetone every tank at that conc. just for performance and to keep the injectors clean.
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Re: Failed CA Emissions (turbo motor)

Post  Bluemach1 on Fri Aug 05, 2011 5:57 pm

WTF!!
I am looking at my results from the last time I smogged..

2009 @15MPH MAX ALLOWABLE 1125
2011 @15MPH MAX ALLOWABLE 1069

2009 @25MPH MAX ALLOWABLE 995
2011 @25MPH MAX ALLOWABLE 669

SON OF A BITCH!!

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Re: Failed CA Emissions (turbo motor)

Post  Bluemach1 on Sat Aug 06, 2011 3:03 pm

FWIW - I bought some Lucas injector cleaner that also claims to greatly reduce NOx. dumped that stuff in there with the fresh 91 and ran the piss out of the car. Took it straight to smog hot and passed.

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