The engine may need some work.
https://sanantonio.craigslist.org/cto/d/san-antonio-jeep-willys-cj2a/7294922714.html

“1948 Jeep CJ2a for sale by owner (serial # indicates it is actually a 1946 but why argue with the DMV). Runs well and comes with the following: New body, Pertronix electronic ignition, high torque starter, 12V conversion, alternator, key start, rewired, turn signals, recent head gasket, seat belts and front shoulder belts, rear seat, driver windshield wiper (electric), lock out hubs, 11” front brake conversion, rear brakes overhauled and new brake lines installed 5 years ago, Solex carb, rebuilt steering, kingpins replaced, rebuilt transmission, aluminum wheels (4) with radial tires as well as 5 NDT tires with steel wheels and roll bar are the highlights. It has been garaged since I bought it.
Now you are asking what’s wrong with it. It needs a gas gauge and sending unit and the engine smokes a light haze. The last compression check was after head gasket replacement #1-85psi, #2-100psi, #3-90 psi, #4-80psi.”