91 Dodge Dakota 5.2 old style 318LA
TWO SPEED IDLE TAILPIPE EMISSION RESULTS
2500 RPM IDLE RPM
Limit reading result limit reading
result
HC ppm 200 58 PASS 200 90
pass
CO% 1.00 0.11 PASS 1.00 0.08
pass
NO ppm n/a n/a n/a n/a n/a
n/a
RPM 2519 valid RPM 701
valid
Dilution 9.5 valid Dilution 10.1
valid
Test done July 15/08
I was surprised with instant pass as previous years thru past six were a
problem, changing 02 sens
and blocking off rad for increased engine temp to pass.
The only item this time was that I noticed the air pump line into the
original 91 cat was breaking away. Replaced cat with high flow cat made by
CATALAN in Belgium, has good quantity of rodium and palladium.
Oil change Amsoil 10/40 , Sunoco 94 octane
This time no blocking rad or anything. They put it on their machine , it
passed .
Jim Knox, 91 Dakota Sport 4x4, 318LA old style.
Toronto, Ontario, Canada
>
>Hi All, I have been having issues passing Colorado Emissions after they
>lowered the limits. I was wondering if anyone would be able to post their
>tested levels and engine specs. I would like to see a compairison of what
>people are testing. Here are mine at last test and they are getting worse
>every test!
>
>1999 5.2 4x4
>
>HC GPM 0.9292 PASS 1.2 CO GPM 11.3572
>PASS 15.0 NOx 2.9614 FAIL 2.00
>
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