Author |
Message |
SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
|
Posted: Fri Mar 02, 2012 6:18 pm Post subject: |
|
|
Do you have a catalytic and if so how old is it?
What was the O2?
You are almost there _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
Back to top |
|
|
edhnb Samba Member
Joined: December 02, 2011 Posts: 210 Location: El Dorado Hills, California
|
Posted: Fri Mar 02, 2012 8:53 pm Post subject: |
|
|
No CAT. It is a 49 state's.
My test results are as follows:
15MPH - %CO2 = 13.0, %O2 = .4, HC = 105, CO% = 2.56, NO = 1265
25MPH - %CO2 = 13.1, %O2 = .4, HC = 98, CO% = 2.46, HC = 1269 _________________ 1977 Asi Riviera |
|
Back to top |
|
|
SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
|
Posted: Fri Mar 02, 2012 10:43 pm Post subject: |
|
|
You need to do 2 things.
Check your timing.
make sure the air filter is good
If you have not replaced the TSII do so as they cause the mixture to move rich as they fail. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
Back to top |
|
|
edhnb Samba Member
Joined: December 02, 2011 Posts: 210 Location: El Dorado Hills, California
|
Posted: Sun Mar 18, 2012 7:11 pm Post subject: |
|
|
ok, the saga continues.
I replaced the air filter.. confirmed timing.. and replaced the TS2. The thing is running like a top. Still failed though... although the readings were better.
So this time I my reading were as follows:
15MPH = HC(PPM) - 99, CO(%) - 2.17, NO(PPM) - 1670
25MPH = HC(PPM) - 90, CO(%) - 2.14, NO(PPM) - 1529
So I was able to bring my CO down a bit... but not enough. The TS2 did wonders for my idle issue however.. and the Bus is running excellent.
I spoke with the smog tech for a while.. and he said that the lower the CO goes, the higher the NO goes.. and lowering the NO is the EGR's job.
I removed my EGR valve and it was jam packed full of carbon blockage.. to the point where no airflow was even possible.
So my next questions is... now that I have cleaned out my EGR (and I can really tell t is finally working). Will this cause my CO to drop any? Or just the NO? Do I need to lean it out even further before my next test... and if so.. how?
Thanks again _________________ 1977 Asi Riviera |
|
Back to top |
|
|
rockerarm Samba Member
Joined: December 16, 2009 Posts: 3552 Location: Los Angeles
|
Posted: Sun Mar 18, 2012 7:56 pm Post subject: |
|
|
What are the "standards" that the veh has to meet, for a non-cat veh? The HC are great, which is an indication of a good ign system and decent A/F ratio. You are probably just a tad rich. If you now find the EGR plugged, didn't anyone do an EGR function test? Not sure if this is done anymore but what it involved was to "activate" the EGR at idle and assure the idle stumbles or dies. If no change it would fail that part of test. Whatever now. Not gonna explain what an egr system does, but possibly now with it working with the added "air" entering the cumbustion chamber, your A/F ratio may lean out enough, though that is not the function of EGR. Without anymore changes why don't you try and do a pre test? If you lean out too much, the HC will go up. So a balance has to be met.
Hope this helps, Bill. |
|
Back to top |
|
|
edhnb Samba Member
Joined: December 02, 2011 Posts: 210 Location: El Dorado Hills, California
|
Posted: Sun Mar 18, 2012 8:15 pm Post subject: |
|
|
Hi Bill,
Thanks again for the input.
I need to get to 1.66 CO, and 1534 NO. So I am getting close.
As far as the EGR test.. it must have been purely a visual test.. as it was completely blocked. I removed everything and cleaned it out pretty good.. and now I can get a noticeable difference when I activate it at idle... where this did not happen before. Also, the pipe heading toward the EGR filter now gets toasty warm.. where this also did not happen before. I guess I should have done this a while ago.... live and learn.
Is there anything else I need to do to help lean it out.. or do you think the EGR finally functioning will help my mixture issue... as I was getting close already?
Thanks, Nick. _________________ 1977 Asi Riviera |
|
Back to top |
|
|
rockerarm Samba Member
Joined: December 16, 2009 Posts: 3552 Location: Los Angeles
|
Posted: Sun Mar 18, 2012 8:30 pm Post subject: |
|
|
There are probably a few things that come to mind, that may/would effect this. Ideally, it would be nice to re-do the test now with a functioning Egr. I personally think this may reduce the co, as it certainly shouldn't richen up. If you have the tools or patience to find/borrow, I would assure proper fuel pressure, correct vacuum to the fuel press regulator, proper specs for the AFM, and one can even move the base ign timing a degree or two and see if the A/F leans a bit.
Bill |
|
Back to top |
|
|
edhnb Samba Member
Joined: December 02, 2011 Posts: 210 Location: El Dorado Hills, California
|
Posted: Tue Mar 20, 2012 1:22 pm Post subject: |
|
|
re-test complete... getting very close.
15MPH = HC(PPM) - 85, CO(%) - 2.07, NO(PPM) - 860
25MPH = HC(PPM) - 80, CO(%) - 2.04, NO(PPM) - 750
So the functioning EGR definitely improved my NO numbers... and my CO dropped a bit. Just not enough. I need to get CO down to 1.66 & 1.46 respectively.
I am guessing that my only option now is to lean it out a bit. So what is the easiest way to do this? Do I need to crack open the AFM and make an adjustment.. or is there an easier way?
Thanks! _________________ 1977 Asi Riviera |
|
Back to top |
|
|
copellos Samba Member
Joined: February 18, 2004 Posts: 937 Location: sonora ca
|
Posted: Tue Mar 20, 2012 2:32 pm Post subject: |
|
|
I know a easier way go get that vin off a 74 like I told u....or wait awhile. I hear there pushing for another smog roll back to 81. |
|
Back to top |
|
|
edhnb Samba Member
Joined: December 02, 2011 Posts: 210 Location: El Dorado Hills, California
|
Posted: Tue Mar 20, 2012 5:06 pm Post subject: |
|
|
PASSED!!
Check out these numbers...
15MPH - HC(PPM) = 27, CO(%) = .09 (yes.. point oh freaking 9), NO(PPM) 648
25MPH - HC(PPM) = 52, CO(%) = .09 (yes.. point oh freaking 9), NO(PPM) 572
I leaned out the idle AF mixture screw by 2 full turns.. and popped the cap on the AFM and adjusted the wiper a tiny bit clockwise to lean out the 'running' AFR. It was kind of a shot in the dark.. as I didn't have an analyzer.. but it worked out.
It was way too lean though.. so I have since dialed it back a bit. Running like a top right now.
So to summarize..
1. Replaced EGR filter
2. Replaced muffler (because old one did not have EGR filter connector).
3. Sealed up EVAP system.
4. Cleaned out EGR valve.. which was completely blocked.
5. Leaned out idle AFR
6. Leaned out running AFR
huge thanks to rockerarm, sgkent, and everyone who helped me out. And to ratwells site for the technical info.
I just upgraded my membership to this site.. worth every cent. I can't imagine what acquiring all of this information would have cost me. This place is priceless. _________________ 1977 Asi Riviera |
|
Back to top |
|
|
copellos Samba Member
Joined: February 18, 2004 Posts: 937 Location: sonora ca
|
Posted: Tue Mar 20, 2012 5:47 pm Post subject: |
|
|
Congrats........ |
|
Back to top |
|
|
SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
|
Posted: Tue Mar 20, 2012 10:59 pm Post subject: |
|
|
nerd04 wrote: |
PASSED!!
Check out these numbers...
15MPH - HC(PPM) = 27, CO(%) = .09 (yes.. point oh freaking 9), NO(PPM) 648
25MPH - HC(PPM) = 52, CO(%) = .09 (yes.. point oh freaking 9), NO(PPM) 572
I leaned out the idle AF mixture screw by 2 full turns.. and popped the cap on the AFM and adjusted the wiper a tiny bit clockwise to lean out the 'running' AFR. It was kind of a shot in the dark.. as I didn't have an analyzer.. but it worked out.
It was way too lean though.. so I have since dialed it back a bit. Running like a top right now.
So to summarize..
1. Replaced EGR filter
2. Replaced muffler (because old one did not have EGR filter connector).
3. Sealed up EVAP system.
4. Cleaned out EGR valve.. which was completely blocked.
5. Leaned out idle AFR
6. Leaned out running AFR
huge thanks to rockerarm, sgkent, and everyone who helped me out. And to ratwells site for the technical info.
I just upgraded my membership to this site.. worth every cent. I can't imagine what acquiring all of this information would have cost me. This place is priceless. |
Awesome. Knew you could do it. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
Back to top |
|
|
SixStringMadMan Samba Member
Joined: December 02, 2011 Posts: 263 Location: Roseville, CA
|
Posted: Wed Mar 21, 2012 5:25 am Post subject: |
|
|
nerd04 wrote: |
PASSED!!
Check out these numbers...
15MPH - HC(PPM) = 27, CO(%) = .09 (yes.. point oh freaking 9), NO(PPM) 648
25MPH - HC(PPM) = 52, CO(%) = .09 (yes.. point oh freaking 9), NO(PPM) 572
I leaned out the idle AF mixture screw by 2 full turns.. and popped the cap on the AFM and adjusted the wiper a tiny bit clockwise to lean out the 'running' AFR. It was kind of a shot in the dark.. as I didn't have an analyzer.. but it worked out.
It was way too lean though.. so I have since dialed it back a bit. Running like a top right now.
So to summarize..
1. Replaced EGR filter
2. Replaced muffler (because old one did not have EGR filter connector).
3. Sealed up EVAP system.
4. Cleaned out EGR valve.. which was completely blocked.
5. Leaned out idle AFR
6. Leaned out running AFR
huge thanks to rockerarm, sgkent, and everyone who helped me out. And to ratwells site for the technical info.
I just upgraded my membership to this site.. worth every cent. I can't imagine what acquiring all of this information would have cost me. This place is priceless. |
That's great news! I'm still holding out a bit to see if the new smog law passes. *fingers crossed*
Hoping to get my firewall off this weekend, without dropping the motor, so I can inspect the vapor lines and pull the fuel filler. I know the neck needs to be replaced but I want to visually inspect the lines just incase I need to order more parts besides the fuel filler neck.
Is the Bus Boys fuel filler neck still the best one to purchase? _________________ 1978 Kombi
http://www.vw-mplate.com/mplate-10020.htm |
|
Back to top |
|
|
TOURJEE Samba Member
Joined: July 18, 2006 Posts: 75 Location: Prescott AZ
|
Posted: Mon Apr 30, 2012 3:22 pm Post subject: |
|
|
Desertbusman wrote: |
75 cutoff? Wow that is nice. Ours is 67. |
Not up here in Flagstaff......no smog at all. |
|
Back to top |
|
|
SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
|
Posted: Mon Apr 30, 2012 4:58 pm Post subject: |
|
|
SixStringMadMan wrote: |
That's great news! I'm still holding out a bit to see if the new smog law passes. *fingers crossed* |
Failed in Committee April 10 with rights to reconsider at a later date.
LAST HIST. ACT. DATE: 04/10/2012
LAST HIST. ACTION : Set, second hearing. Failed passage in committee. Reconsideration granted.
Based on the cons I wouldn't get my hopes up:ARB estimated that, by 2010,
pre-1982 cars would account for more than one-fifth of the
hydrocarbons and one-tenth of the nitrous oxide emissions in
the state despite representing only 2.6 percent of the vehicle
population and 1.3 percent of the vehicle miles traveled. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
Back to top |
|
|
SixStringMadMan Samba Member
Joined: December 02, 2011 Posts: 263 Location: Roseville, CA
|
|
Back to top |
|
|
jtauxe Samba Member
Joined: September 30, 2004 Posts: 5778 Location: Los Alamos, New Mexico
|
Posted: Tue May 01, 2012 7:59 am Post subject: |
|
|
SGKent wrote: |
ARB estimated that, by 2010,
pre-1982 cars would account for more than one-fifth of the
hydrocarbons and one-tenth of the nitrous oxide emissions in
the state despite representing only 2.6 percent of the vehicle
population and 1.3 percent of the vehicle miles traveled. |
Wow. Old cars are dirty. Ya know, I like driving an older car, since I take comfort in being able to maintain it, and in the fact that I am not requiring the manufacture of a new car on my behalf. But, even when they were new, these cars were much worse polluters than today's cars. For those of you who remember the Los Angeles skies of the 70s and 80s, the cleanup of the air is remarkable.
So, although we find these tests to be a real PITA, the Clean Air Act has done wonders for our air quality, and California has gone the extra mile in making it even more stringent. They just have to when so many people live together. It's the price you pay for living in a populous place with lots of cars. Apparently, it is worth it.
On the other hand, the State of New Mexico has only 2 million residents, total. I think Albuquerque has smog tests, which is good because their air quality suffers at times (especially in the winter when people are using their wood stoves). Up here on the mountain (Los Alamos is on the side of the Jemez Mountains -- check it out with Google Earth!) we naturally have very clean air because there is almost always a breeze, we do not get inversions, and there are only 18,000 persons in the entire county. So, not smog tests, obviously. We have our own tradeoffs for living in a sparsely-populated state, though: There is only one major airport in the State, for example, and it's 100 miles from where I live.
Anyway -- congrats on meeting your vehicle emissions goals. Keep LA (Los Angeles, not "our" LA, Los Alamos) clean! _________________ John
"Travelling in a fried-out Kombi, on a hippie trail, head full of zombie..." - Colin Hay and Ron Strykert
http://vw.tauxe.net
1969 Transporter, 1971 Westfalia, 1976, 1977, 1976, 1977, 1971, 1973, 1977 Westfalias,
1979 Champagne Sunroof, 1974 Westfalia Automatic, 1979 Transporter, 1972 Sportsmobile, 1973 Transporter Wild Westerner, 1974 Westfalia parts bus, 1975 Mexican single cab *FOR SALE*, 1978 Irish 4-door double cab RHD
|
|
Back to top |
|
|
|