Hey guys, if you dont konw already, CA passed a law that obd1 vehicles need a test to see if fuel vapors are leaking through the tank or the evap system

So I took this 95 mazda b3000 i just bought and it passed everything except this fuel tank test.

I finally got a buddy to help me and we pulled off the bed. Nothing was obviously leaking, all the hoses were decent, no major cracks.

To be safe I took the vent on my gas tank and just capped it off with a rubber nipple. I also added silicone to the grommet in case it wasnt sealing good anymore. I also took off my fuel pump assembley and siliconed the o ring it uses.

This car is a DD beater car I dont want to spend lots of money trying to fix.
This totally sucks. Any ideas on pinpointing the problem?

 

pressure test the charcoal canister? If that leaks it could make you fail

 

...junk it and drive your rx

 

My canister is old and failing, That is why I capped the tube off the tank, so I wouldnt have to worry about any of the hose from the tank to the canister


I was just thinking about that too. The only problem is that I need a DD car. It gets 16mpg and Im afraid of getting pulled over. Also if someone hits my car

 

check the gas cap if im not mistaken thats part of the evap test. but i don't deal with smog stuff to much just an idea

 

Thanks for the help guys. The old test was to just only test the cap, which I passed. The new test is also putting an adapter on the filler neck and apply low presure with gas vapors.

I found the leak! I pulled the bed again and found the molded filler neck hose with a huge crack in it. I dont know how I didnt see it the first time