Crossword Genius

Car repairers replacing casing of engine causes complaint (6)

Ross

I believe the answer is:

angina

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'complaint' is the definition.
(angina is a kind of health problem)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for angina that I've seen before include "pain in the neck" , "Severe pain from heart disease" , "Painful heart complaint." , "Sharp chest pain caused by heart disease" , "Nag Ian about his disease" .)

I've seen this clue in The Telegraph.
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