Fuel fill pipe

[Tracy]

Will the metal flap in the filler tube keep me from passing smog if it’s broken off ?

 

[TROY66/68]

Would not here if we still had E testing, that is the gas caps job.

 

[mrjp]

Will the metal flap in the filler tube keep me from passing smog if it’s broken off ?

I doubt that it would.

 

[Dirty Dog]

Will the metal flap in the filler tube keep me from passing smog if it’s broken off ?

Smog testing laws are local, not universal. So the answer is "check your local laws".