S5 Workshop Manual Engine
There is
cylinder
striking sound
inside the
engine.
Bushing has abrasion, and cam of camshaft
and rocker arm have abrasion.
Crankshaft , connecting rod journal diameter
and piston pin worn seriously
Valve clearance is improper.
Thrust clearance of crankshaft is too big.
Engine Too Hot:
Fault Phenomenon and Reason
Ignition timing is not correct
Spark plug clearance is improper or carbon
deposit
Air intake manifold loosed, air intake
manifold blocked
Fan belt tensile force is insufficient
Coolant is insufficient or water pipe is
blocked.
Clearance of water pump is improper or
damage
Oil path is blocked or oil pump is damaged.
Fault Phenomenon and Reason
Radiator is blocked by Water scales.
Oil Consumption is Too Much:
Fault Phenomenon and Reason
Valve guide pipe oil seal is worn or damaged.
Oil cup is worn or damaged.
Piston ring isn't staggered according to the
regulation.
Valve or valve guide pipe is worn.
Engine overheats, interior pressure increases,
and some lubricating oil is drained out of
outlet.
Inspect relevant parts and
eliminate faults.