Ran out of gear? (8)
I believe the answer is:
streaked
'ran' is the definition.
(streaking is a kind of running)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for streaked that I've seen before include "Marked with linear discolouration" , "Raced" , "Ran naked" , "Moved very quickly" , "Shot" .)