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ENGINE 273 MPFI
ENGINE TESTING
After assembly of the engine, mount engine on test
bed, prepare engine for starting and conduct the test
in following manner.
•
Connect oil pressure gauge and temperature
gauge.
•
Connect coolant hose to and from radiator. Fill
coolant in the cooling system. Fit radiator cap.
•
Fill required quantity of recommended oil in the oil
sump.
•
Mount air cleaner assembly on test bed suitably.
•
Connect air cleaner outlet to engine intake using
suitable hoses.
•
Make suitable linkage for controlling accelerator
lever.
•
Connect exhaust pipe to exhaust manifold.
•
Connect battery cables to starter motor. Ensure
that -ve terminal is earthed.
•
Crank engine with accelerator lever in idling
position. Allow oil to be circulated through the
system. Check and ensure that oil pressure
indicated by gauge is satisfactory.
•
Slightly raise the engine speed and check for any
oil, fuel, coolant and air leakages. Rectify if any.
Check colour of the exhaust gas. Check for any
unusual noise from the engine.
•
Connect engine to dynamometer and run for
running in test as per test schedule.
Engine running in test schedule :
Engine Speed
Time
Torque
(RPM)
(minutes)
(mkg)
800
5
0.0
2000
5
2.3
2500
5
4.6
3000
5
5.8
3500
5
4.9
2500
5
8.2
•
After running in test of the engine, reduce
dynamometer load to zero and allow engine to run
at idling speed for about 5 minutes and then stop
it.
•
Allow engine to cool down for about 3 hours. Then
remove cylinder head cover. Loosen cylinder head
mounting bolt by quarter turn and retighten
immediately to the specified torque in the correct
sequence.
•
Complete cylinder head tightening operation in the
same sequence and with the same torque. Start
the engine and check for any fuel leakages. Rectify,
if necessary.
INSTALLATION OF ENGINE ON VEHICLE
Follow the removal of engine from vehicle procedure
in the reverse order.