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Rattling sound when starting the engine

23994 Views 11 Replies 9 Participants Last post by  Mohammad Abdulkhalik
I've just have my cruze recently. After my first 10,000km service, i notice that there is a rattling sound from my engine when starting the car. Any ideas?
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I started a '12 2LT on the dealer's lot today and it didn't rattle or make any odd noises. The radio was off as was the vent fan.

Had a second thought on this. The Cruze has a variable speed oil pump and pumps harder with higher rpms. If the rattling were the oil pump, the rattling should change in concert with the engine speed. Does it?
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