Please settle this question

[Paisano]

I took it back for the second inspection, and it failed again for pressure test. It passed all the other testing categories like before.
I didn't know they could do this......but the shop supervisor gave it a passing grade anyway.

She said I can see you made an effort to fix this. She also said it needs to be fixed when I come back in 2 years.

She suggested the vapor hose at the fuel tank vent should have a hose clamp. So I hose clamped it when I got home.

I tracked down two State Senators who work on air quality committees. I emailed both of them saying emissions testing exemptions
should be added for more makes and models including mine.

 

[lowspeedpursuit]

AZ is on some shit. Here OBDI checks for no CEL, exhaust sniffer, and they very recently started testing your gas cap. You can also waive the test if you show you spent enough money trying to fix it. Used to be $200, raised it to $1000, which is kind of high.

Maybe suggest the gas cap test / "I tried" waivers when you talk to the politicians.

 

[Paisano]

I figured their computer system would just block a pass result based on the results data. I guess the supervisors have some discretion ?

I'm curious about something.

I've been doing 'sniff' tests at all the connections on the fuel evaporative system.

fuel tank filler neck.......no gasoline odor
fuel pump flange with metal fuel lines and electrical connector.......no gasoline odor
charcoal vapor canister vapor hoses......no gasoline odor

fuel pump tank vent valve......slight gasoline odor

I just replaced the fuel tank vent valve and sealing grommet too.
Whet would there be even a faint fuel vapor smell

 

[lowspeedpursuit]

Because the vent is more or less open to the tank and rubber is very slightly permeable to gasoline over time?
I'm more surprised you don't smell any gas at the filler neck.

I haven't read the entire thread. If you want to find an EVAP leak, smoke test it.

 

[Paisano]

So a slight gas odor at the fuel tank vent valve is more or less normal then?

And again, the fuel tank vent valve and sealing grommet were replaced less than a month ago.

I actually did my own pressure test about 10 days ago. I used leak detection spray and variable pressure on my air compressor blow gun.
Will the leak detection spray not detect a vapor leak with foam or bubbles?