Isuzu NPR 4J Series - Engine Has Less than Normal Power; Turbocharger

00 – 20 SERVICE INFORMATION
13. TURBOCHARGER
1) ENGINE HAS LESS THAN NORMAL POWER
Checkpoint Trouble Cause Countermeasure
Air cleaner Restricted Clean or replace
Intake pipe and hose Restricted Clean or replace
Compressor/Intake manifold Loose (Leaking) Repair
Exhaust manifold/turbine inlet Loose (Leaking) Repair
Exhaust piping and silencers Restricted Clean or replace
Air breather Restricted Clean or replace
Boost compensator
(Injection pump)
Defective Repair or replace
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OKOK
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
NG