robb wrote:
> Need some help determining if emision failed due to real problem
> and how to fix
> *OR* was this a suspect emission tester and i just wait for
> different tester ?
> what to do ?
>
> I am original owner of '93 civic Si HB 205,450 miles.
>
> I do most all basic maintenence (filters/oil/etc) and repairs
> (eg. brake pads/ radiator replace/master cylinder replace/
> ignitor replace/ replace distributor, etc ) honda dealer gets the
> bigger invasive stuff like timing belt, water pumps, clutch ...
>
> The car has passed emissions by no small margins till this year
> and it FAILED miserably ?
> *BUT* only on the 25/25 test ?
>
> Only 5,400 highway miles were put on the car from 2008 test to
> 2009 test.
>
> 2009 numbers
> ===========================
> ...................25/25 test............50/15
> ----------------------................---------
> HC ppm .....288.....................65
> CO %..........9.38 **...............0.20
> NOx ppm....345.....................255
> RPM............2718..................1971
> CO + CO2 %....18.3..............15.1
>
>
> 2008 numbers
> ===========================
> ....................25/25 test...........50/15
> -------------------------.............---------
> HC ppm .....73........................70
> CO %..........0.22.....................0.23
> NOx ppm...236......................212
> RPM...........2100.....................1925
> CO + CO2 % 15.1.................15.1
>
>
> Ques 1:
> Does this test failure look like real (possible) numbers ? that
> is, how does it fail 25/25 ***SO *** bad and not the 50/15 ?
>
> Ques 2:
> if these are real numbers then what repair am i looking to fix
> this ?
>
> Ques 3:
> Can the tester muck up the test and get that 25/25 test failure ?
> Not that he wanted to muck it up but maybe a little incompetent
> because he had these several problems ...
>
> - Could not get the tack sensor in the right place , kept
> moving it all around like on top dash , center dash, on mirror ,
> under dash, on windshield, on the hood , under the hood ? could
> not seem to find a place that gave good tach readings and kept
> saying, "your RPM is bad"
>
> - He tried the clip on tach wire but could not get the wire
> connected to machine correctly.
>
> - at some point during testing he could not seem to get the gear
> shifted so he left it in 1st and ran the car up to about 20
> miles per hour in 1st gear the car was running really loud so i
> peeked in at the tach which up around 5000-6000 yes that is 5K-6K
> and held it there for about 30 seconds waiting for the machine to
> do something ?
>
>
> Anyways, i would appreciate some helpful advice on what to fix or
> do please
>
> robb
>

Sounds like you need to get it tested by a different tester. Incorrect
rpm data and not shifting the gears will screw up the test easily.

--
Steve W.