Knock in the engine how would you know if it's the main Bearings

Asked by GuruCHCPH Feb 21, 2019 at 09:14 PM about the 2006 BMW 3 Series 323i Sedan RWD

Question type: Maintenance & Repair

2 Answers
2,600

Sirkut_Interrupted answered 5 years ago

Main bearings dont knock, they squeal and skreech bc they are stationary unlike rod bearing which arm constantly bing thrown about kinda like bicycle pedals

Mark helpful

F_O_R answered 5 years ago

If the main bearings are bad the oil pressure will drop to almost nothing.

Mark helpful

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