57919

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.

note

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

☞ Monitor current data at idle and stall test : "EGR Actuator" is NOT operated (4.7 %)

☞ EGR actuator 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 4.7 % after 60 seconds.

Symptom

Inspection procedure

Case1

● "Air Mass Flow Max. Plausible" and ""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 2,300 rpm.

☞ "Boost pressure sensor" is increased to 2100 ± 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 Max. Plausible" and "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.L2

☞ Stall rpm is 1,500 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.

note

Refer to "Loosen (Tighten) the Clamp of intake manifold" of detail inspections (Equipment settings).