1983 FIAT UNO check engine

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Page 149 of 303

FIAT UNO 1983  Service Repair Manual Sump pan - 
removal and refitting Á
60Drain the engine oil.
61Unbolt and remove the cover plate from
the lower part of the flywheel housing (photo).
The two lower bolts retain the gearchange rod
supp

Page 150 of 303

FIAT UNO 1983  Service Repair Manual 75If the pump is unworn, refit the rear cover
plate and tighten the screws fully.
76Apply air pressure from a tyre pump to the
oil pump oil ducts to clear any sludge or other
material and then prime t

Page 151 of 303

FIAT UNO 1983  Service Repair Manual 99Tighten the big-end bolts to the specified
torque (photo). The correct torque is
important as the bolts have no locking
arrangement. After tightening each big-end,
check that the crankshaft rotates

Page 155 of 303

FIAT UNO 1983  Service Repair Manual crankcase. If the shells are to be used again,
keep them with their respective bearing caps. 
70The thrust washers which control
crankshaft endfloat are located in the
crankcase, and retained by the t

Page 156 of 303

FIAT UNO 1983  Service Repair Manual 6Fit the main bearing caps in their numbered
sequence and the correct way round (photo).
7Clean the threads of the main bearing cap
bolts, lightly oil them and screw them in
finger-tight. Tighten all

Page 160 of 303

FIAT UNO 1983  Service Repair Manual separately, after the ten main bolts (see 
Fig. 13.13).
Piston rings
14The piston rings comprise two
compression rings marked TOP, and an oil
control ring.
15Cross-sections and fitting details are
sho

Page 161 of 303

FIAT UNO 1983  Service Repair Manual Engine oil cooler -
removal and refittingÁ
23The oil cooler is mounted behind the front
bumper/spoiler (photo). 
24Disconnect the oil flow and return hoses,
either from the cooler or the oil filter c

Page 162 of 303

FIAT UNO 1983  Service Repair Manual Initial start-up after major
overhaul
28Refer to Chapter 1, Section 45, but note
that an oil pressure gauge is fitted to indicate
oil pressure.
29Check the ignition static timing as
described in Secti