Possible Clues:

• Air and fuel are mixed in this vehicle by an Italian pistol maker, reportedly
• Device mixing air and fuel
• Conservative reprobate with universal support backing volatile chamber
• Component of engine in vehicle, terrible brute on hill
• Where vaporised fuel is ignited in a petrol engine
• Part of car engine
• Part of engine from turbo racer broke down around start of track
• No end of unpleasant difficulty given to drivers over part of engine
• Car's petrol/air-mixing device
• Part of internal combustion engine