Diagnosta wykrył usterkę zawieszenia i amortyzatora.

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Breakdown of Diagnosta wykrył usterkę zawieszenia i amortyzatora.

• diagnosta: the authorised vehicle inspector
• usterka: the defect; the fault
• zawieszenie: the vehicle suspension

Questions & Answers about Diagnosta wykrył usterkę zawieszenia i amortyzatora.

What does diagnosta mean in this sentence?

Here diagnosta means an automotive diagnostic technician or vehicle inspector—someone checking a car for technical problems. In everyday Polish, the word can be used in other diagnostic contexts too, but with usterka, zawieszenie, and amortyzator, the car-related meaning is the natural one.

Why does diagnosta end in -a if the verb is masculine?

Because some Polish masculine nouns end in -a. This is not unusual: compare mężczyzna, poeta, kierowca.
So diagnosta is masculine here, and the verb shows that clearly: wykrył is the masculine singular past form.

Why is the verb wykrył?

Wykrył is the past tense, masculine singular form of wykryć (to detect). Polish past tense agrees with the subject in gender and number.

So:

• wykrył = he detected
• wykryła = she detected
• wykryli = they detected (masculine-personal group)
• wykryły = they detected (non-masculine-personal)

Because the subject is a masculine diagnosta, the sentence uses wykrył.

Why is it usterkę and not usterka?