Words to Describe carburetion

How carburetion often is described ("________ carburetion")

• electronic
• improved
• normal
• dual
• conventional
• perfect
• triple
• lean
• erratic
• faulty
• defective
• improper
• imperfect
• overrich
• correct
• barrel
• proper
• good
• rich
• poor
• efficient
• satisfactory
• special
• standard
• multiple