Ford Granada 1985-1994, Owner'S Manual

Page: 121 / 254

1 Check the cost and availability of spare parts
before deciding to dismantle the carburettor. If
the unit has seen much service, fitting a new or
reconditioned carburettor may prove more
satisfactory than any attempt at overhaul.
2 Obtain a carburettor repair kit, which will
contain the necessary gaskets, diaphragms
and other renewable items.
3 With the carburettor removed from the
vehicle, clean it thoroughly externally and
place it on a clean worksurface.
4 Referring to the exploded view of the
carburettor (see illustration), remove each
component part whilst making a note of its
fitted position. Make alignment marks on
linkages etc.
5 Reassemble in the reverse order to
dismantling, using new gaskets, O-rings etc.
6 To check the choke pull-down after
reassembly, position the fast idle screw on the
highest step of the cam. Press the pull-down
adjusting screw towards the pull-down
diaphragm and measure the choke valve
opening with a twist drill or gauge rod of the
specified diameter. Adjust if necessary using
a 2 mm Allen key (see illustration).
7 After refitting the throttle damper, adjust its
position in the bracket so that with a 2 mm
(0.08 in) feeler blade inserted between the idle
speed adjusting screw and the throttle lever,
the damper plunger is just touching the
actuating lever (see illustration).
8 Adjust the idle speed and mixture, and if
necessary the fast idle speed, after refitting the
carburettor.
9 Recheck the throttle damper adjustment,
when applicable.
1 This is not a routine operation. It should only
be necessary after overhaul, or when a new
carburettor is fitted.
2 The idle speed and mixture must be
correctly set and the engine must be at
operating temperature.
3 Remove the air cleaner and plug the
manifold vacuum connection.
4 With the engine running, position the fast
idle screw on the second highest step of the
fast idle cam (see illustration). Measure the
engine speed and compare it with that given in
the Specifications.
5 If adjustment is necessary, remove the
tamperproof plug from the fast idle screw by
crushing it with pliers. Stop the engine and
open the throttle to gain access to the screw
with a small screwdriver. Turn the screw a
small amount clockwise to increase the speed,
anti-clockwise to reduce it, then reseat the
screw on the second highest step of the cam
and recheck the engine speed. Repeat as
necessary.
6 Fit a new tamperproof cap where this is
required by law, then refit the air cleaner.
Idle speed cannot be adjusted in the usual
way on this carburettor, as it is controlled by
the ESC ll module.
If mixture adjustment is required, proceed
as described in Chapter 1, Section 16.
1 Disconnect the battery negative lead.
2 Remove the air cleaner.
3 Disconnect the choke and stepper motor
wiring. The stepper motor multi-plug locking
device must be depressed to release the plug
(see illustration).
4 Unclip the throttle arm from the throttle lever
and remove the throttle cable bracket.
5 Disconnect the fuel hose from the
carburettor and plug it. If a crimped type hose
clip is fitted, cut it off and use a worm drive
clip when refitting.
6 Disconnect the vacuum pipe(s) from the
carburettor, noting their connecting points if
there is any possibility of confusion.
7 Remove the four carburettor-to-manifold
nuts. Check that nothing has been overlooked,
then lift off the carburettor. Recover the
gasket.
8 Clean the carburettor and manifold mating
faces, being careful not to sweep dirt into the
manifold.
9 Refit by reversing the removal operations. If
the stepper motor has been disturbed, refer to
Chapter 5, Section 19 for the initial
adjustment.
1 Check the cost and availability of spare
parts before deciding to dismantle the
carburettor. If the unit has seen much service,
fitting a new or reconditioned carburettor may
prove more satisfactory than any attempt at
overhaul.
2 Obtain a carburettor repair kit, which will
contain the necessary gaskets, diaphragms
and other renewable items.
3 With the carburettor removed from the
vehicle, clean it thoroughly externally and
place it on a clean worksurface.
4 Referring to the exploded view of the
carburettor (see illustration), remove each
component part whilst making a note of its
fitted position. Make alignment marks on
linkages etc.
5 Reassemble in the reverse order to
dismantling, using new gaskets, O-rings etc.
Be careful not to kink the diaphragms.
17 Weber 2V carburettor -
dismantling and reassembly
16 Weber 2V carburettor -
removal and refitting
15 Weber 2V carburettor - idle
speed and mixture adjustments
14 Pierburg 2V carburettor - fast
idle adjustment
13 Pierburg 2V carburettor -
dismantling and reassembly
Fuel and exhaust systems 4•9
4
14.4 Fast idle adjustment - Pierburg 2V
Tip of fast idle screw is arrowed
13.6 Choke pull-down adjustment 13.7 Throttle damper adjustment - Pierburg
2V carburettor
A Actuating lever
B Damper plunger C Damper locknut
D Feeler blade
16.3 Depress locking clip (arrowed) when
disconnecting stepper motor multi-plug