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Home >> BMW >> 1997 >> 740iL >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> FUEL SUPPLY SYSTEM - REPAIR INSTRUCTIONS - 740i & 740iL >> Fuel Tank With Mounting >> 16 11 130 Checking filler cap pressure relief valve >> Special tools required:

Special tools required:

Set pressure regulator on special tool 16 1 171 fully in "-" direction.

Connect special tool 16 1 171 via compressed air line (1) to garage compressed air system (8...10 bar).

Connect pressure sensor (2) of Diagnosis and Information System with a measuring range of 0...3.5 bar.

Fig 1: Connecting Pressure Sensor
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Select special tool 16 1 172 or 16 1 173 matching vehicle's filler cap and attach to quick release coupling of special tool 16 1 171.

Install filler cap on selected special tool (3).

Fig 2: Installing Filler Cap On Selected Special Tool 16 1 172 Or 16 1 173
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NOTE: Only the absolute pressure is indicated in the display of the Diagnosis and Information System (DIS). The current ambient air pressure is already displayed without additional pressurization.