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Re: [DIESEL] Diesel Emissions Checks

>Where I live, diesels are exempt from these inspections.  Anyone on the list have to have emissions inspections, and if so, what do they check for and how?  

When Washington state began doing smog inspections in the major metro
areas (early '80s, I think), only gas vehicles had to be inspected. A
few years later they began inspecting diesels also. Never having owned
a diesel car, I don't know what they check for.