emissions failure 1992 300 sl

[po7553po]

How is everyone doing? I was wondering if anybody knows any tricks to pass emissions in Nevada.CO2 was 2.08% and HC was 265 and I guess that is not good.It sounds like a lot of cash to fix and at this point I have none.Dont want to get rid of the car its my one love.Dont know what to do.Thanks

[SL BRABUS]

Originally Posted by po7553po

How is everyone doing? I was wondering if anybody knows any tricks to pass emissions in Nevada.CO2 was 2.08% and HC was 265 and I guess that is not good.It sounds like a lot of cash to fix and at this point I have none.Dont want to get rid of the car its my one love.Dont know what to do.Thanks

There is no tricks of passing it...... Fix it or find someone that will pass it for you.....

Oh, yeah there 1 trick that will work is using someone else car to do the smog and input your information...... That will pass.....

[edcarls]

Originally Posted by po7553po

..CO2 was 2.08% and HC was 265 and I guess that is not good...

Post the results of the test so we can figure out which limit was exceeded and by how much. The variances on the test results will point to which part of the emission system needs fixing.

[Pete S]

Had a friend that used this on his beater and it passed after a failed emissions test. Not sure how bad it was but I guess you could give it a shot.

CRC 05063 Guaranteed To Pass Emissions Test Formula - 12 Fl Oz. : Amazon.com : Automotive

CRC 05063 Guaranteed To Pass Emissions Test Formula - 12 Fl Oz. : Amazon.com : Automotive

In Pennsylvania they hook the OBDII directly to test equipment so its not so easy to just swap cars during the emissions test.

[MercedesTheBest]

i know in BC they can only plug in the sensor on cars 1996 or newer. otherwise they actually need to run it and test it.

[Pete S]

Originally Posted by MercedesTheBest

i know in BC they can only plug in the sensor on cars 1996 or newer. otherwise they actually need to run it and test it.

Yep same here, and I apologize for not reading the thread title correctly. I guess you could see if your mechanic would do a little mickey mousing for you to get the car to pass. Good luck!

[Bill SD]

Additional background on the car history, mileage, had it passed before in Nevada or other state if you brought it in.

My 300SL was failing in California with similar numbers when I got it. Fixing vacuum leaks on various connection points on intake manifold improved the numbers some for the first test that failed when I tested in Virginia. The head gasket leak was the primary culprit that once fixed was able to pass.

[AKM92]

good thing we dont have emissions in florida... if my car was registered in chicago im sure id have some issues.. but what is the cutout date for emissions anyways? Because my 66 mustang is still registered in chicago and i never had to do emissions on it.. is it 25 years? or when the car becomes antique or something? im sure it varies from state to state

[po7553po]

OK here are the results from the test-

Test Parameter Result Additional info if available
--------------- ------------ -------------------------
IDLE SPEED CO 2.08% Greater than 1.20%
IDLE SPEED HC 778 Greater than 220 parts per million
HIGH SPEED 265 Greater than 220 parts per million

I dont know what they mean but hear they are.The car is a 1992 300 SL-24 with 195,000 miles.Never had test in Nevada before but passed emissions in Ct in 2011.Did head gasket 2 years ago.Thanks for the help.You guys are the most helpful people I have ever dealt with.

[mrelbe]

My 1991 300 SL did not pass after the 'mechanic' fooled around with the mixture adjustment. NO was too high. The engine needs to be in a 50% "duty cycle". I was able to borrow an Oscilloscope and adjusted the mixture until the square wave was even. Voila! it passed.
But in your case it's high CO and HC. Maybe the catalytic converter is shot.