Isuzu 4JB1T - Excessive Turbocharger Noise

00 – 26 SERVICE INF
ORMATION
4) EXCESSIVE TURBOCHARGER NOISE
Checkpoi
nt Trouble Cause Countermeasure
Intak
e and exhaust
system joints
R
estricted
Repair
Intak
e and exhaust system
gaskets
Dam
aged
Replac
e
T
urbocharger rotating parts
Rough r
otation
Replac
e
Rubbing agains
t housing
Repair
or replace
Dam
aged
Replac
e
Rubbing agains
t housing
Repair
or replace
Dam
aged
Replac
e
Continued on the nex
t page
OKOK
OK
OK
NG
NG
NG
NG
NG
NG
NG
Com
pressor wheel
T
urbine wheel
Car
bon deposits
Clean or
replace
NG