Isuzu A-4BG1 Workshop Manual page 119

I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I II II I I I I I II II II II II I I I I I I I I I
ENGINE ASSEMBLY 111
5-27
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Stop the engine to
complete
the
tuning procedure.
Crank the engine with the starter (non-ignition oper-
ation) for about twenty seconds.
This will prelubricate the engine internal compo-
nents.
Start the engine and allow it to run at 750 to 800 rpm
for five minutes.
Remove the cylinder head cover while the engine is
running.
Check that the engine oil is continuously circulating
from the oil pump to the valve rockers through the
cylinder head.
If there is no oil circulation or if the oil circulation is
sluggish, stop the engine and make the appropriate
repairs or adjustments.
Reinstall the cylinder head cover.
increase the engine speed to
1,500
rpm to do the
engine warming-up operation.
Check the engine for oil, fuel, coolant, and air intake
leakage.
Check for abnormal noise and odor.
Check for abnormal electrical charging.
Check the engine fastening parts for loosene&
When the engine coolant temperature reached to
75*C
(167°F)
or
more,
increase the engine speed to
2,000 rpm and allow it to run for twenty
minutes.
This will give the engine
the essential run-in oper-
ating time.
Adjust the engine operation
speed to the specified
value. -