E46 2.2k cc Cold start issue

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loodave2

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Joined
Jan 30, 2017
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4
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Hi, anyone with same issue and how to solve this.
Cold morning start, the engine, shakes n rpm dropped and dies with error code appearing.
If rev and warm up to passed 80 deg C, then ok, but error code still there but engine is smooth running.
Many tried , changing the plugs and coils but issue returned.
Some say air mass , no compression at 1 and 6 or leakage at air intake area.
One just suggest to do valve grinding.
Help pls!!
Thks
 
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