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      01-12-2017, 02:54 AM   #4
kooolaid
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Drives: e93 M3 Lexus GS300
Join Date: Sep 2008
Location: So Cal

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Quote:
Originally Posted by deansbimmer View Post
These engines don't have rocker arms.

I hear a slight clinking like heat expansion, which would be normal.

I think I also hear some pre-ignition type knock which would not be normal, and might be a bad coil (knock sensing system), or just bad/low grade fuel.
Thanks for the input but the dealer confirmed it's not knocking. And I have been using Chevron 91 octane ever since I bought the car and it is the best gas we can find near where I live in southern california...
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