[Chrysler300] 1958 330d gas cap

[Larry Jabin <larry@xxxxxxxxxx>]

Yesterday after driving my car about 50 miles I removed the gas cap & there was a big swoosh of air going INTO the tank
The tank was about ¼ full
The cap is vented but I guess the vent must have stuck closed so I tried to clear with air pressure

Today I drove the car again it was  a great day temp in the low 70s
But when I removed the cap after driving it for a while
This time another big swoosh of air but coming OUT of the tank
So somehow the tank was creating pressure

I would drive it 20 miles & check it again , same thing a couple times


Has anybody experienced this

Also is the vented cap supposed to release pressure both ways in & out?

Also where can I purchase a correct cap?

Thanks

Larry Jabin

San Francisco CA 94111

Larry@xxxxxxxxxx<mailto:Larry@xxxxxxxxxx>



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