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 “CARB”) towards the carburettor and the coloured end (marked “DIST”) towards the distributor or electronic module (as applicable).
3 When refitting a spark sustain valve, the valve must be positioned with the end marked “VAC” towards the carburettor and the side marked “DIST” towards the distributor or electronic module (as applicable).
Ported vacuum switch
4 Where fitted, the switch(es) may be located
in the inlet manifold and/or in an adapter fitted
in one of the coolant hoses.
5 To remove a switch, partially drain the cooling system. Note that there is no need to remove the cylinder block drain plug.
6 Mark the vacuum pipes for location so that they can be refitted in their correct positions, then disconnect the pipes from the switch.
7 Unscrew the valve from its location.
8 Refitting is a reversal of removal, ensuring that the vacuum pipes are correctly connected. Refill the cooling system.
Fuel trap
9 Disconnect the vacuum pipes at the fuel
trap and withdraw the fuel trap.
10 When refitting, the fuel trap must be positioned with the black end (marked “CARB”) towards the carburettor, and the white side (marked “DIST”) towards the distributor, electronic module, or ported vacuum switch (as applicable) (see illustration).
22.10 Fuel trap vacuum connection markings
Spark control system additional
components
11 According to model, engine and
equipment, additional components such as
one-way valves or solenoids may also be
fitted as part of the spark control system.
12 The removal and refitting procedures for these components are basically as described previously, and provided that all attachments are marked for position prior to removal, no problems should be encountered.
See also:
Key to wiring diagrams
Key to wiring diagrams
Key to wiring diagrams ...
Engine/transmission - removal and separation
Note: Suitable lifting tackle will be required for
this operation.
Carburettor engines
Removal
1 The engine is removed complete with the
transmission in a downward direction and then
withdrawn f ...
General information and precautions
The fuel system on all models with
carburettor induction is composed of a
centrally mounted fuel tank, a fuel pump, a
carburettor and an air cleaner.
The fuel tank is mounted under the floor
pan ...