60942

In case that poor acceleration occurs and excessive black smoke is discharged. If "EGR Actuator", "Air mass meter" current data are abnormal and "Boost pressure sensor" current data is NOT increased normally, Inspect intake system leakage.

Monitor parameters as above at idle and stall test(acceleration).

note

Refer to "Stall test" of detail inspections (Equipment settings).

[ Normal current data at idle ]

☞ Monitor current data at idle : 'EGR Actuator' is NOT operated (5%)

[ Normal current data at stall test ]

☞ Monitor current data at stall test : 'EGR Actuator' operated (50%)

☞ EGR Actuator valve is operated for approx. 60 seconds after racing the accelerator pedal at warm up idle (Neutral, Load is not applied) and 'EGR Actuator' duty is to 5% after 60 seconds.

Symptom

Inspection procedure

Case1

● 'Air Mass Flow per Cylinder' current data is increased compared with normal current data at stall test.

● 'VGT actuator duty' is increased at stall test.

☞ Stall rpm is increased to 2,200 rpm.

☞ 'Boost pressure sensor' is increased to 1300 ± 100hpa

● There is Intake system partial leakage.

● Inspect damage of inner rubber hose covered by woven cloth, clamp connection and intercooler leakage.

Case2

● 'Air Mass Flow per Cylinder' current data is increased a lot compared with normal current data at stall test.

● "VGT actuator duty" is higher than normal data at stall test.

☞ Stall rpm is 1,700 rpm and poor acceleration occurs.

☞ "Boost pressure sensor" is1,000 ± 100hpa and it is NOT increased almost.

● There is intake system complete leakage.

● Inspect disconnection or leakage of intake hose.