BMW 318/325/M3/525/535/M5 1989-1993 Repair Information

IGNITION TIMING

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The ignition timing on BMW vehicles is not adjustable. Even checking the timing would be an effort in futility as the timing is automatically adjusted by the DME control unit as engine conditions change. As a result the timing can be anywhere in a range as determined by the DME and not at any one stationary point that could be checked.

 
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