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Civil1 min ago
spark plugs
how the hell do i get to the spark plugs on my 1994 520i bmw
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In the M50 B20 engine, which I think yours is, they are located under their own ignition coils in the centre of the cylinder head (if you didn't already know).
Remove engine oil filler cap.
Remove plastic cover from the top of the cylinder head cover. The coils are the six black boxes in a row.
On the relevant coil;
Lift the securing clip and disconnect the wiring plug.
Unscrew the two coil securing nuts. Note the locations of any leads or brackets that may also be secured by the nuts. The coil connectors are spring loaded, so the top of the coil will lift as the nuts are unscrewed.
Pull the coil away from the cam shaft cover and spark plug and withdraw it from the engine.
That spark plug is now exposed for removal.
That oughta do it.
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