Description of defect

Due to an inadequate plug fixing method for plugging the casting holes in the intake manifold of some diesel engines, the heat from the EGR gas may cause thermal deformation of the casting holes and the plug may lose its holding power.
If the plug continues to be used as it is, there is a risk that the plug may fall out, causing an airflow noise and engine malfunction.

Improvement details

Crimp and secure the plug concerned.
If the plug is loose or missing, replace the intake manifold with a countermeasure.

Chassis number of target vehicles

Delica

Track

SKF2LM-100002～SKF2LM-100135

Van
SKF2MM-100001～SKF2MM-100408

Track
SKF2TM-100001～SKF2TM-100501

Van
SKF2VM-100002～SKF2VM-100729

Cargo
SKF6MM-100002～SKF6MM-100205
SKF6VM-100002～SKF6VM-100288

Automotive maintenance cannot determine the cause based on symptoms alone.
Be sure to perform diagnosis and inspection before determining the cause of the failure.