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BMW
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1992
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325is Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/O Codes
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Symptoms
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Knocking
Engine Controls - Tests W/O Codes: Symptoms: Knocking
Check DME/Motronic control unit.
Check ignition and coil circuit.
Ensure spark plugs fire.
Check ignition and coil circuit.