No Dtc; Engine Low Power, Missfire, Hesitation, Knocking, Running Rough - Hino Motors HINO 155 series Workshop Manual

2–98

NO DTC

ENGINE LOW POWER, MISS-FIRE, HESITATION, KNOCKING, RUNNING ROUGH
No Parts
1 Injector
2 Injector
3 Air filter
4 Air hoses
5 Intake throttle
6 Mass air flow sensor
7 Exhaust Brake
8 Engine
ENGINE (J05E)/TROUBLESHOOTING
Check contents
Injection quantity at 1,500r/min No load
Coolant temp. more than 80 C {176 F}
Cylinder cut-off test
(Detail on next page A)
Check restriction or contamination of the
air cleaner element
(Detail on next page B)
Visually check
(Detail on next page C)
Visually check
Active test by HINO DX Ⅱ
(Detail on next page D)
Mass air flow test at 100% Free accelera-
tion (Detail on next page E)
Visually check
Open and close butterfly valve
(Detail on next page F)
Compression test
Check
Judgement
(Pass/Fail)
3
10 (mm /st) or
more
Find knocking
cylinder
No restriction
Genuine parts
No bending
No leaking
No excessive dirt
inside
Drilled 3 holes
Following target
Difference
between old and
new sensor less
than 10%
No sticking
No seizing
More than 340psi
EN01H02127030602016021
If fail
Injector
Replace
Injector
Replace
Filter
Replace
Fix Replace
Drill holes
MAF
Replace
Exhaust
brake
Replace
Overhaul