Related Clues:

• Kind of valve
• Outflow's opposite
• Throttle
• Stifle
• Food or air
• Valve under the hood
• Type of valve
• Fuel opening
• Lose badly
• What you eat
• What's eaten
• Exhaust opposite
• Fail in the clutch
• Collapse in the clutch
• Blow it in the last seconds, e.g.