[Johnny Mullet]

I work in Pennsylvania and live in Ohio. The PA emissions test in our area is a "Visual and gas cap" check. Being an IM inspector myself, I know what to look for.............

Under hood inspection to make sure all components are there and seem to be in working order like the PCV valve, Evap lines, Air pump, etc. Then under the vehicle, the car must have a cat converter that looks like it's made for the vehicle. Then the machine tests the fuel cap where you also make sure the fuel inlet restrictor in is place if equipped.

Certain parts of PA also require an OBDII scan for emissions related codes.

Lake County in Ohio actually hooks a "Sniffer" to your tail-pipe and it checks the amount of pollution the car is putting out. Every state is different.