Failed Emission Test - 1989 420SEL - Page 3 - PeachParts Mercedes-Benz Forum

#31 03-06-2006, 10:35 PM

Quote:

Originally Posted by Nipperiley

Attached is a recent copy of Oregon DEQ test result for a 1992 300CE that I recently purchased. I have done nothing to this car. Carfax showed some failures to pass emissions and at one time labled the car a "gross polluter" in California, whatever that means. The car was run for 1/2 hour before testing and not turned off. It was NOT done on a dyno. The car passed but I think that the HC numbers were high and an wondering if this is normal????

118,000miles ; about 45 deg F outside temp

Where did you do your test at?

I've noticed that some DEQ centers let you slide on a lot more (or their machines are far less sensitive?)....guy that works for a cab company selling/moving cars could NOT get a perfect vic to pass emissions in city of portland. Tried and tried and replaced tons of crap. Finally they took it down to sherwood DEQ test center and it flew with flying colors.

Interesting...

Newberg is DEQ excempt...though I would LOVE rolling in there with the diesel...haha

Nipperiley · #32 03-07-2006, 12:42 AM

I took the car thru the DEQ center on Tualatin Sherwood Road. I work in King City and reallytried to get the CAT as hot as possible. I drove all over the back roads to Scholls, etc.

#33 03-07-2006, 12:58 AM

Quote:

Originally Posted by Nipperiley

I took the car thru the DEQ center on Tualatin Sherwood Road. I work in King City and reallytried to get the CAT as hot as possible. I drove all over the back roads to Scholls, etc.

We've found (car guys around here) that the sherwood has often been the "easiest" to pass a car at...you might try a different place but I think that will be your best bet.

Doesn't help that you can't really keep the cat hot since Tualatin Sherwood road is hounded with fuzz regularly...not to mention traffic.

Hope you can figure out what is up...

trueog · #34 03-07-2006, 01:59 AM

Quote:

Originally Posted by manny

A little knowledge is said to be dangerous.

F.Y.I. ,I was instrumental in setting up the AirCare System in the Lower Mainland, back in 1988/89.

I'm also familiar with the " Weak Points " of todays AirCare procedures.

REally... what kind of roll did you have? still work for them in any capacity?

trueog · #35 03-07-2006, 02:01 AM

Quote:

Originally Posted by manny

It's not so much the government, as at is the Treehuggers.

Never met one to this day that has ANY knowledge about cars, much less how automotive emissions are created.

Tree huggers think smart car's are enviro cars...haha, losers. They should be driving the now defunt electric GM cars, and always be 30 minutes late for everything.....

stevenstevensteven · #36 08-01-2009, 09:19 PM

Quote:

Originally Posted by Duke2.6

Oh, that's certainly worth something. In CA the only "conditioning" is the tire dry test if it's wet. Conditioning is a HUGE DEAL that the CA test authorities don't want to address. At lot of cars fail simply because of how they are conditioned, which is not uniform. There is no conditioning standard, and this makes it easier for unscrupulous operators to commit fraud by testing a clean car whose catalyst is too cold.

IMO all cars should be reasonably conditioned as part of the test so there's some basis for comparing results.

Our Mercs tend to be high on HC, and the limit keeps tightening even as the cars get older and should have more wear allowance. They can also be very low on CO and NOx. You can have very low CO and NOx, but if only 1 PPM above the HC limit, you FAIL. That's why I don't feel any guilt if I have to diddle my timing map a little to get more margin.

The government has run amuck. When are people going to stand up and say ENOUGH!?

Duke

I second this statement!

Cigar Havana · #37 03-06-2010, 01:25 PM

My 1989 420SEL with 284,000 km failed the emission test here in Ontario.
ASM252 Test

At 1406 RPM, Dilution 15.3
HC ppm limit is 50 reading is 157 result failed
CO% limit is .28 reading is .34 result failed

Curb idle test,

RPM 665 dilution 15.3
HC ppm limit is 200 reading is 96 result passed
CO% limit is 1.00 reading is .10 result passed

Engine temperature was 85c. Prior to the test it was driven about 15 km, with speeds up to 80 kph for about 10 min.. Car stopped about 5 miniutes prior to the test.

Any recommendations?

Cigar Havana · #38 03-10-2010, 09:43 PM

Well she(1989 420SEL, 284K KM) is back on the road for another two years. I just squeaked through the test. I took her back to the emission specialist and $200 later, here are the results

ASM 2525

HC ppm: limit 50; reading 50; result pass
CO%: limit 0.28; reading .11; result pass
NO ppm: limit 548; reading 95; result pass
RPM: 1399 valid
Dilution 15.3 valid

Curb Idle

HC ppm: limit 200; reading 32; result pass
CO%: limit 1.0; reading .03; result pass
RPM: 806 valid
Dilution 15.2 valid

The guy told me next time I'll need a new catalytic converter.