Isuzu A-4BG1 Workshop Manual page 181

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
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TR049BESHOOTlNG
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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