Post by Skillmaker2 on Oct 8, 2021 0:59:08 GMT
Hi, I have a 2009 Rav4 d4d And I have a loud engine, Sometimes the engine is quiet and Sometimes the engine makes Knocking or tappingn sound, For example, Sometimes the engine is quiet and i drove for a long time in city or outside and barely no Knocking sound, Sometimes when is drive for a long time reaching 3000rpm then i hear knocking sound after that and it doesn't go away even after days. What is the problem? My engine oil is 5w40
to the club 
