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The BMW Range
3 Series
E46
Rattling sound
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<blockquote data-quote="Advanced" data-source="post: 714414" data-attributes="member: 40773"><p>Bro,</p><p></p><p>I have the same issue with my car.</p><p></p><p>Engine rattling noise during morning / cold start up but lasted for few seconds **It's quite loud** Trakkkkk....</p><p></p><p>use 10/40 with oil additive doesn;t help at all.</p><p></p><p>Worst part, my car sounds like a diesel engine now. </p><p></p><p>Other prob that might be associated with the prob:</p><p></p><p>Lost of power from **Sometimes**</p><p></p><p>Misfiring **Sometimes**</p><p></p><p>Higher Fuel consumption</p><p></p><p></p><p>Recent diagnostic shows that my O2 sensor needs to be replaced.</p><p></p><p>However, the engine is already consuming oil and there's still some leakage after some repair.</p><p></p><p>Not sure if that's the same sounds you mentioned or not but i kinda lack of confidence to start the car early in the morning now <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Advanced, post: 714414, member: 40773"] Bro, I have the same issue with my car. Engine rattling noise during morning / cold start up but lasted for few seconds **It's quite loud** Trakkkkk.... use 10/40 with oil additive doesn;t help at all. Worst part, my car sounds like a diesel engine now. Other prob that might be associated with the prob: Lost of power from **Sometimes** Misfiring **Sometimes** Higher Fuel consumption Recent diagnostic shows that my O2 sensor needs to be replaced. However, the engine is already consuming oil and there's still some leakage after some repair. Not sure if that's the same sounds you mentioned or not but i kinda lack of confidence to start the car early in the morning now :) [/QUOTE]
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