Smog Emissions results 1987 300E Mercedes

Technical aspects of automobiles, et. al., post #19,024
Author:
Date:
Subject:
 Tube Audio
 2008-05-13 13:21:44
 Smog Emissions results 1987 300E Mercedes
Hi

I have a 1987 300E live in California, however the car is from the east
coast, so it is a 49 state car.

I am up for my smog / emissions test in a couple of months.

The NO have been high the last two tests. And am afraid that they might be
even higher and fail the upcoming tests.

Here are the results of the last two tests. Any ideas of areas that I
should look into would be a great help.

Thanks

2004 Test
15mph 2602 rpm
%CO2 15.0

%O2 0.1

HC MaX 110
HC AVE 31
HC MEAS 62

CO MAX 0.71
CO AVE 0.10
CO MEAS 0.24

NO MAX 772
NO AVE 237
NO MEAS 768

25mph 1726 rpm
%CO2 15.0

%O2 0.1

HC MaX 85
HC AVE 20
HC MEAS 35

CO MAX 0.59
CO AVE 0.09
CO MEAS 0.12

NO MAX 711
NO AVE 199
NO MEAS 303


%%%%%%%%%%%%%%%%%%%%%%


2006 Test
15mph 1735 rpm
%CO2 14.4

%O2 0.9

HC MaX 110
HC AVE 31
HC MEAS 104

CO MAX 0.71
CO AVE 0.10
CO MEAS 0.20

NO MAX 772
NO AVE 237
NO MEAS 765

25mph 1729 rpm
%CO2 14.4

%O2 0.4

HC MaX 85
HC AVE 20
HC MEAS 63

CO MAX 0.59
CO AVE 0.09
CO MEAS 0.16

NO MAX 711
NO AVE 199
NO MEAS 356
Author:
Date:
Subject:
 Mike
 2008-05-13 21:10:24
 Re: Smog Emissions results 1987 300E Mercedes
"Tube Audio" <[email protected]> wrote in message
news:sLmWj.597$BL6.256@nlpi070.nbdc.sbc.com...
> Hi
>
> I have a 1987 300E live in California, however the car is from the east
> coast, so it is a 49 state car.
>
> I am up for my smog / emissions test in a couple of months.
>
> The NO have been high the last two tests. And am afraid that they might be
> even higher and fail the upcoming tests.
>
> Here are the results of the last two tests. Any ideas of areas that I
> should look into would be a great help.
>
> Thanks
>
> 2004 Test
> 15mph 2602 rpm
> %CO2 15.0
>
> %O2 0.1
>
> HC MaX 110
> HC AVE 31
> HC MEAS 62
>
> CO MAX 0.71
> CO AVE 0.10
> CO MEAS 0.24
>
> NO MAX 772
> NO AVE 237
> NO MEAS 768
>
> 25mph 1726 rpm
> %CO2 15.0
>
> %O2 0.1
>
> HC MaX 85
> HC AVE 20
> HC MEAS 35
>
> CO MAX 0.59
> CO AVE 0.09
> CO MEAS 0.12
>
> NO MAX 711
> NO AVE 199
> NO MEAS 303
>
>
> %%%%%%%%%%%%%%%%%%%%%%
>
>
> 2006 Test
> 15mph 1735 rpm
> %CO2 14.4
>
> %O2 0.9
>
> HC MaX 110
> HC AVE 31
> HC MEAS 104
>
> CO MAX 0.71
> CO AVE 0.10
> CO MEAS 0.20
>
> NO MAX 772
> NO AVE 237
> NO MEAS 765
>
> 25mph 1729 rpm
> %CO2 14.4
>
> %O2 0.4
>
> HC MaX 85
> HC AVE 20
> HC MEAS 63
>
> CO MAX 0.59
> CO AVE 0.09
> CO MEAS 0.16
>
> NO MAX 711
> NO AVE 199
> NO MEAS 356
>

Check the EGR system for blockages/restrictions and proper operation of all
components.
Author:
Date:
Subject:
 HLS
 2008-05-14 08:07:36
 Re: Smog Emissions results 1987 300E Mercedes
"Mike" <[email protected]> wrote in message news:0_qWj.21>
> Check the EGR system for blockages/restrictions and proper operation of
> all components.

Another tip.. Some carburetor/injector cleaners are based on amine
compounds.
These combust to give oxides of nitrogen. If you are going to use them, do
it
well before the test and go with untreated gas. No need to make the test
even
harder to pass.