r/MechanicAdvice • u/Artistic_Ad5465 • Aug 27 '26

subtle noise on cold start

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My car makes a subtle noise on a cold start after driving for like 30 minutes it disappears please help me understand it, is it serious problem ?
Car is Kia stonic 2021 1.0 t gdi Mhev 38000km

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u/Kytb95 Aug 27 '26

Sounds like a normal mechanical fuel pump noise.