Difficult Starting at Operating Temperature

07.82101 Engine is Difficult to Start at Operating Engines 616 and 10/82
Temperatures 617.91 Vehicles with
Automatic
Transmission

Cause:
Oil in vacuum line system caused by leaking diaphragm of modulator pressure vacuum unit on automatic transmission.

Remedy:
Blow out vacuum lines with compressed air. Replace rubber hoses, vacuum shut-off unit on fuel injection pump and install modulator pressure vacuum unit with fabric reinforced diaphragm (see Automatic Transmission for further information).