Read this at Environmental Protection Agency;

PROPOSED RULES
Air pollution control; new motor vehicles and engines: Heavy-duty vehicle and engine standards; onboard diagnostics requirements, (three parts)
3199-3248 [HTML] or [PDF]
3249-3298 [HTML] or [PDF]
3299-3344 [HTML] or [PDF]

at

http://www.epa.gov/fedrgstr/EPAFR-CONTENTS/2007/January/Day-24/contents.htm

Now is the time to voice your opinions on this kind of engine pollution control regulations before they become law.

pdq67

Yeah, I know. The diesel fuel now available at the pumps around here already have the PPM of sulpher reduced....as noted on the pump. :(

Where have you been, tier I started back in 96 for off road use ;)
Last year farm tractors got EGR valves, VGR turbos, and a hundred new sensors :p

I posted last year when we all got hit with the sulpher reduced crap and my fuel o rings started to leak because of it!
The place I took it to had like 25 trucks for the same problem some worse than mine like the entire fuel seperator and fuel filter aluminum housing was eaten up from the low sulpher... Some of the people it cost them thousands and I was lucky mine only cost a couple hundred bucks and out the door.
Had to replace alot of sensors.:sad:

Old news.

No, this isn't old news!!

Up to 14,000 pounders NOW will be controlled a whole lot like cars by OBD but being diesels!!!!!!

pdq67

and this is bad because....

actually, i don't know why they didn't go after the diesels before the gas engines. after all, you don't get a bunch of black soot spewing out of most gas engines, and when a car goes by it doesn't smell like a refinery..