the opdomiter does not work, will it pass smog?
opdomiter, not sure what that is. Please define.
No, the odometer is not part of an emissions test.
No, it will not pass the smog test with a defective or removed O2 sensor.
Probably not as the emissions test (Smog test) is carried out by inserting a sensor into the exhaust pipe.
It depends on where you live. In California you will not
The OWNER (no matter what capacity) is responsible.
If your engine is burning oil there is a good chance it won't pass a smog test. You should get it to a mechanic immediately as it's not only a danger to the environment, but possibly could be a danger to you.
Depends on your state. Where I am a warning light on is a fail.
NO, to pass smog test, it all needs to be original
If it came with one from the factory, yes if you want to pass emissions test.
HHO generators are unregulated in all 50 states at this point.
The better question would be how much does it cost to PASS...
I never replace it ,only if you need to like before a smog test so it can pass emissions