Isuzu A-4BG1T - Page 181

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r4. >
TR049BESHOOTlNG ;‘,12-13
EXCESSIVE FUEL CONSUMPTION
Checkpoint Trouble Cause Remedy
Continued from the previous page
OK
P 7
1
Turbocharger
NG
g Defective turbocharger assembly
NG
Replace the turbocharger assembly
b
4
c
,
OK
Valve clearance
NG Valve clearance improperly
adjusted
NG
Adjust the valve clearance
1
J L ,
,
I
OK
Blown out cylinder head gasket
Compression pressure
NG
Worn cylinder liner
Piston ring sticking or broken
NG
Replace the related parts
Improper seating between the
t
. -
valve and the valve seat
t
OK
.
t
Valve spring .
NG NG
b
I Valve spring weak or broken
Replace the valve spring
1
1 t