Related Clues:

• Good engine sounds
• Beams
• All ___
• Sounds of contentment
• Photog's request
• Doesn't knock or ping
• Runs smoothly, as an engine
• Prepares to be shot
• Engine sounds
• Cheese accompaniment?
• Runs smoothly
• Shows satisfaction
• Contented sounds
• Expressions of joy
• Shows off one's dental work