Ford Sierra Service Manual
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Spark control system components (carburettor models) - removal and refitting
Spark delay and sustain valves
1 Disconnect the vacuum pipes at the valve
and withdraw the valve.
2 When refitting a spark delay valve, the valve
must be positioned with the black end
(marked “CA ...
Fuses, relays and circuit breakers - general information
Pre-1986 models
1 The fuses and most of the relays are
located in a plastic box attached to the
bulkhead on the driver’s side of the engine
compartment.
2 The fuses are numbered to identify the
...
Ignition systems
The ignition system is divided into two circuits, low tension
(primary) and high tension (secondary). The low tension circuit consists of the
battery, ignition switch, primary coil windings and th ...
