<human>: I live in CA and my tags have now expired. Background Story: When I was about to sell my car, the guy who I was gonna sell it to had a truck (99 Ford Ranger 3.0L V6) and I agreed to trade for it, it didn't have the check engine light on at the time. My car was leaking water and had crapped out a couple times so I thought I was getting a better deal. 

The codes the ranger reads are P0443 and P0303... I've tried everything... replacing the Canister Purge Valve, put in new wires and new spark plugs. I've had 2 different mechanics look at it and the truck is still reading that code. The last ditch effort will be to replace the canister purge valve again and if that doesn't work I am truly screwed. Also, I only have about $400 left to spend on it.

Any help reddit? Sorry for the long and technical explanation.

Condense the text into a few key points
<bot>: My truck won't pass smog, I've tried almost everything and I can't fix it. I live in CA. What should I do if I can't fix it?