dieselstop thread re: diesel truck emissions testing (http://forums.thedieselstop.com/ubbthreads/showflat.php?Cat=&Board=UBB30&Number=1953705&page=0&view=collapsed&sb=5&o=31&fpart=all)

Trouble for some TX folks.

As I've noted in some other threads about removing CAT's from LLY's, the EPA recently issued a finding of non compliance in, IIRC, 38 States regarding the Clean Air Act.


Most of those have to do with emission testing. It may be that various States like Utah will implement it in only selected Counties, but diesel emission testing is definitely coming down the pike to an area near most of us...http://www.dieselplace.com/forum/smileys/Disapprove.gif

Well then you just have to own your own shop where you can do your own inspections...http://www.dieselplace.com/forum/smileys/HiHi.gif

But for current truck owners, not much impact. Those that put the kitty behind the wood shed will need to bring it back for a while. Might have to connect your egr and take off the box. But that is about all. They can't make you comply to a higher standard with current trucks. When this all started on gassers I had one that just had a pcv valve. My inspection consisted of seeing if there was flow through the crankcase. No dyno, no tube up the butt or anything else.

Jim

My Dmax on juice lvl 2 passed the inspection test with flying colors. Lambs auto in Austin.

Wonder if they will make it mandatory for those of us without cats to have them installed? That would suck...http://www.dieselplace.com/forum/smileys/Angry.gif

Do you notice a big difference without the CAT?

Im glad this is coming about. CAT's are there for a reason. To cut down on NOx emissions. Why take it off?

When I go to the Grand Canyon, I enjoy seeing the other side.

Wonder if they will make it mandatory for those of us without cats to have them installed? That would suck...http://www.dieselplace.com/forum/smileys/Angry.gif





Only if 'they' pay for it!

Well some of us were able to purchase trucks that came without cats to begin with. So I think adding them would only cause issues with the motor since it is setup to run without it. Not sure though, I could be wrong.

Mine doesent have a cat.

I really doubt that adding one would damage a thing. GM seems to add them the the Duramax willy nilly without trouble.

Well some of us were able to purchase trucks that came without cats to begin with. So I think adding them would only cause issues with the motor since it is setup to run without it. Not sure though, I could be wrong.

I really doubt you would be required to add a cat and egr to your truck. They were sold that way so I don't see how they can require the equipment. Same with gassers when emission controls started on those. The cars that were not made with the controls were not required to test with the controls.

Jim

Actually mannytranny,


Catalytic converters do not lower oxides of nitrogen, if anything, by being a catalyist (ie-oven), they would contribute to the production of NOx, which are caused by excessive temperatures. As pressure & temperature are relative (increase in pressure=increase in temp). Diesels with their high compression ratios, produce high combustion chamber temps. You can mostly thank the EGR valve for the reduction of NOx (due to the reduction of combustion chamber tempuratures via controlled exhaust gas contamination of the combustion chamber).


Cat/converters primarily provide a secondary combustion process to aid in the removal of fuel not consumed in 'normal' engine combustion, thereby reducing emmisions (unburned fuel) produced in part by the lowered combustion chamber temps present in diesels equiped with the new EGR's... not to mention variable rate turbos, higher CAFE requirements, increased consumer overall performance demands, & extremly reduced mandated emmision standards.


Hope this helps you understand the process a little better .http://www.dieselplace.com/forum/smileys/Hug.gif


(ps-there is no such thing as "retrofit" in regards to emmisions, your vehicle must meet the standards that were in effect when it was produced. No more & no less. This is Federal Law & cannot be superceded by any State, lest they lose federal highway funding, & they're not about to risk that....)Edited by: Loki_nine

(ps-there is no such thing as "retrofit" in regards to emmisions, your vehicle must meet the standards that were in effect when it was produced. No more & no less. This is Federal Law & cannot be superceded by any State, lest they lose federal highway funding, & they're not about to risk that....)

What standards are you referring to? Is it the emission testing standards or the vehicle emission equipment standards? I have a 04LLY and as of now California does not require smogging of diesels. It is comming in '06 or '07. With this Federal Law do I need to get my truck smogged when CA enables the Diesel Smog check or do I get away with not getting it tested since it was built before the smog test was required? Just curious.

They will check for the existance of the emissions equipment, then run the smog test. With the standardization of the OBD2 codes and interface, they will soon also hook up to your computer to check for correct functioning of things like the EGR. This is already implemented in PA for gassers and will be for the diesels when they get around to it.

Don't throw away your partshttp://www.dieselplace.com/forum/smileys/HiHi.gif

I quickly read the post. It was only a matter of time before something happened. With all the guys who have "smoke stories" it seemed inevitable.
It is a toy (the programmers and modules). For people to smoke other vehicles on the road. People see this and complain. Won't just be Texas either......http://www.dieselplace.com/forum/smileys/Cry.gif And I had hoped the No Emmision Test would last longer.http://www.dieselplace.com/forum/smileys/Ermm.gif

Man this sucks. I was thinking it was so cool I wasn't going to have to deal with smog checks anymore and now I am going to be back to where I started. Out here in California my title says commericial. What is the difference. Why do they classify it as commercial?

I believe they classify it as commercial because of the GVWR. Some dealerships will actually register it with a lower rating to prevent that. Or at least so I have heard.