Thread: gas cap leak
View Single Post
Old 05-12-2026, 11:11 PM   #7
Karl Wescott
Senior Member
 
Karl Wescott's Avatar
 
Join Date: May 2010
Location: Oregon
Posts: 1,663
Default Re: gas cap leak

1933-34 originally used a NON-vented cap which sealed the fill neck opening. Locking gas caps by their nature are vented and will spill fuel. Confusion abounds about the replacement caps in part due to Ford in the "Green Bible" back interchanging the later vented cap to 1932.


The Drake tank should be vented on the top (usually in the pickup tube area). With a non vented cap and a non vented tank and a strong fuel pump you can make a 12 gallon tank into a 2 gallon tank (Our family did it on a '68 Plymouth wagon).


My guess is the wrong cap.
Karl Wescott is offline   Reply With Quote