2000 Honda Accord
 

My check engine light has ben on for a couple of months now. I took the car
to get it inspected and they told me it is an automatic failure because of
the CEL. I took the car to a mechanic and he said that the air intakes are
clogged with Carbon. He said that he is going to clean them out and replace
the valve associated with it. Cost $800. I asked him if he would go ahead
and inspect it after the fix. He said I had to drive the car for 100 miles
or so for the fix to register and pass inspection. Does that sound right? I
know nothing about cars.