Green’s Dictionary of Slang

1. the heart.

1924

Stallings & Anderson What Price Glory? 123: And you, the best pistol shot in the corps, would put one through my carburettor as easy as pitching pennies in a well.

2. (drugs) a water pipe, used for smoking cannabis or crack cocaine.

1977		L. Young et al. Recreational Drugs.
2001		ONDCP Street Terms 5: Carburetor — Crack stem attachment.