[DML] Re: California Smog
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[DML] Re: California Smog



You would have failed in NJ too.

The Cat may need replaced but, you have some other issues to fix before you can say for sure based on the numbers. The CO and CO2 are really off from what I've experienced. This could be caused by a bad fuel adjustment, vacuum leaks or exhaust leaks, etc. The NOx cannot be completely evaluated until the other numbers are back to "normal' for the DeLorean engine. The fuel adjustments are usually done with electronic measurements which can prove to be quite accurate if the mechanical pieces are correct. These specs and procedures are in the service manual. With HC so high, just guessing, there is probably a vacuum leak causing too much fuel which has damaged the CAT. The NOx numbers are close so fixing the vacuum leaks and/or other mechanical issues and checking the fuel adjustments may allow the CAT to bring the NOx back into specs.

HC 25 to 0. avg 12
CO .12 to .02. avg .06 (not to be confused with service manual numbers which are before the CAT) 
CO2  16.0 to 13.5. avg 15.0

NOx below 900. avg 650

DMCH CA should be able to fix it.

Harold McElraft - 3354



--- In dmcnews@xxxxxxxxxxxxxxx, aphawrldch@... wrote:
>
> 
> 
>  
> Well...4066 just failed smog.  Sure could use some help as to where to go to fix this.  Not to go... What do I replace?
> 
> 
> 
> %CO2
> 
> Test 15 MPH  1496 RPM  meas 8.5/8.3  
> 
>         25 MPH  2451 RPM meas 9.0/7.6
> 
> 
> 
> HC (PPM)
> 
> 15 mph  Max 141  Ave 45  Meas 141  CLOSE!
> 
> 25 mph  Max 113  Ave 33  Meas 69
> 
> 
> 
> CO (%)
> 
> 
> 
> 15 MPH Max 0.99  Ave 0.16 meas 0.20
> 
> 25 MPH Max 0.79  Ave 0.14 Meas 0.15
> 
> 
> 
> NO (PPM)
> 
> 15 MPH Max 1148  Ave  434  Meas  854
> 
> 25 MPH Max 978    Ave 357   Meas  1172.  FAIL!
> 
> 
> 
> 
> 
> Any suggestions would be appreciated!  Would LOVE to just have to change plug wires, air filter, something semi simple.  I'm sure I'm just dreaming!  But sure am hopeful!  
> 
> Thanks
> 
> Linda
> 
> 
> [Non-text portions of this message have been removed]
>




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