Check fuel holding pressure
To check the fuel holding pressure, special tool 13 0 290 must be assembled as follows.
Screw adapter 11 4 310 onto line 13 0 291 . Screw the IMIB 100 bar pressure sensor (1) onto adapter 11 4 310.
Alternatively, the pressure gauge from the set of special tools 13 3 060 can be screwed onto line 13 0 291 .
Between lines 13 0 291 and 13 0 292 , mount a shutoff tap (2) and a T-piece (3) from the set of special tools 13 3 060 .
Mount pressure gauge (4) from special tool set 13 3 060 onto T-piece (3) from special tool set 13 3 060 .
Remove circlip (1).
Unlock and detach fuel line (2) to fuel tank from fuel line (2) to high pressure pump.
Install special tool (1) 13 0 290 with pressure gauge (2) and IMIB 100 bar fuel pressure sensor (3) into the detached fuel line.
Establish fuel delivery pressure.
Close shutoff tap (4) and switch off the engine.
Read off fuel holding pressure of high pressure pump from IMIB tester and compare with values in diagnosis system.
Read off fuel holding pressure to fuel tank on pressure gauge (2) and compare with values in diagnosis system.
Assemble engine.
Check fuel system for leak tightness.