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Mixture (CO) adjustment potentiometer - removal and refitting
Removal 1 The potentiometer is located on the side of the left-hand suspension turret (see illustration). 17.1 Mixture (CO) adjustment potentiometer (arrowed) - 1.6 EFI engine 2 Disconnect the ...

Ford Sierra Service Manual
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Spark plug renewal (Every 12 000 miles (20 000 km) or 12 months)
1 The correct functioning of the spark plugs is vital for the correct running and efficiency of the engine. It is essential that the plugs fitted are appropriate for the engine. 2 Make sure that t ...