What's the best was to make a car FAIL the smog test?

I want to retire the car and get the state to buy it but it has to fail the test first. It barely passed last time and so I want to find a way to push it over the edge. It cannot be something obvious either.

2016-07-20T14:35:42Z

Really? Does that matter much? Anyway it's a 1997 Nissan Maxima v-6

?2016-07-20T15:06:18Z

Punch a hole in a vacuum line, re-gap a spark plug to almost closed, cut an oxygen senor wire and splice the sheath back together instead of the conductor.

Gray Area2016-07-20T14:33:52Z

annnd we don't even know what kidn of car it is, engine or anything. Way to go

KayleenR2016-07-20T15:58:33Z

If it barely passed last time its going to fail this time

The Devil2016-07-21T11:47:29Z

I won't help you cheat.

ponderer2016-07-20T15:46:05Z

Welfare societal leech eh. I'm feeling sick.