I am in the process of replacing my fuel pump which took a dump last week. While I have the tank down I'm replacing the seals; fuel pump locking ring/seal and sending unit locking ring/seal. I am also replacing the fuel tank vapor valve grommet, but have no idea how to tell if the vapor valve itself needs to be replaced. It's a $50 part, so not something to just throw money at.
Is it similar to a PCV valve, where if it rattles when you shake it then it's still good?
Is it similar to a PCV valve, where if it rattles when you shake it then it's still good?