service interval FORD SIERRA 1987 2.G Fuel And Exhaust Systems Carburettor Workshop Manual

9Tighten the manifold securing nuts
progressively to the specified torque, and
similarly tighten the exhaust downpipe
securing nuts. Do not forget to fit the engine
lifting bracket on SOHC models.
10Ensure that the HT leads are reconnected
to their correct cylinders.
Inspection
1The exhaust system should be examined for
leaks, damage, and security at regular
intervals. To do this, apply the handbrake, then
start the engine and allow it to idle. Lie down on
each side of the vehicle in turn and check the
full length of the exhaust system for leaks,
while an assistant temporarily places a wad of
cloth over the tailpipe. If a leak is evident, stop
the engine and use a proprietary repair kit to
seal it. If an excessive leak or damage is
evident, renew the relevant section of the
exhaust system. Check the rubber mountings
for deterioration and renew if necessary.
Removal
2To remove the exhaust system, jack up the
front and rear of the vehicle and support on
axle stands (see “Jacking and Vehicle
Support”).
3If desired, the exhaust downpipe can be
removed independently of the remainder of
the system, and similarly the main part of the
system can be removed, leaving the
downpipe in place.
4To remove the downpipe, unscrew the
securing nuts and disconnect the downpipe
from the manifold. Recover the gasket.
Unscrew the two nuts and bolts, and separate
the downpipe flanged joint from the remainder
of the system. Withdraw the downpipe (see
illustrations).
5To remove the main section of the exhaust
system leaving the downpipe in place,
unscrew the two securing nuts and bolts and
separate the flanged joint from the downpipe.
Unhook the rubber mountings and withdraw
the system from underneath the vehicle. The
number and type of rubber mountings variesaccording to model (see illustrations). If
necessary to avoid confusion, note how the
mountings are fitted to enable correct
refitting. Note that on P100 models the
system must be manipulated to pass over the
rear axle.
Refitting
6Refitting is a reversal of removal, but ensure
that all mating faces are clean, and fit a new
gasket between the downpipe and manifold
(see illustration). Do not fully tighten the joint
27Exhaust system - inspection,
removal and refitting
4A•18Fuel and exhaust systems - carburettor
27.4a Exhaust downpipe-to-manifold
flanged joint viewed from underneath
vehicle27.5a Rear exhaust section mounting -
Hatchback model
27.9a Cutting point when fitting a service replacement exhaust system section - Saloon,
Hatchback and Estate models
X = 1639 mm for all models up to 1987 except 1.3 and 1.6 litre Hatchback
X = 1681 mm for 1.3 and 1.6 litre Hatchback models up to 1987
X = 2063 mm for all models from 1987
27.6 Fit a new downpipe-to-manifold
gasket27.5b Rear exhaust mounting - P100 model
27.4b Exhaust downpipe-to-main system
flanged joint