Low oil knocking?

2020 HYUNDAI ELANTRA
42,000 MILES • 2.3L • 4 CYL • 2WD • AUTOMATIC
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CRUSSE20
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  • 1 POST
The car was little over half capacity oil level low when started it up. Pressure light came on and made knocking noise and shut off immediately. Added oil but wondering how long after start up would it take for knock to go away.
May 26, 2024 at 11:09 AM
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STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
If it is full of oil the knock should go away as soon as it starts and the oil light goes out, as the oil pump starts turning as soon as the crankshaft starts turning. If it doesn't then it's likely that the engine will need to be replaced because the bearings were damaged from the lack of oil. Even if it does go away the lifespan of the engine has been shortened though.
May 26, 2024 at 6:01 PM
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