| Answer | Crossword Clue |
|---|---|
| POPPET | Valve in a gasoline engine |
| CHOKE | Valve of a gasoline engine. |
| CHOKE | Valve on a gasoline engine |
| THROTTLE | Engine valve |
| CHOKE | Engine valve. |
| INTAKE | Engine valve |
| CHOKE | Engine valve |
| CAMSHAFT | Engine valve regulator |
| TIMINGBELT | Engine-valve regulator |
| POPPET | Steam-engine valve |
| TIMINGBELT | Car-engine valve controller |
| INTAKE | ... valve (part of an engine) |
