Checking fuel pressure fuel pump engine BMW M20, M30, M40, M42, M43, M44, M52, S38, S50, S52

13 31 029

Set BRAND BMW diagnostic tester or DIS-tester or special tool 13 3 060 with the connecting pipe and T-shaped adapter 13 3 064 to the fuel supply hose between the fuel filter and pressure regulator.
A warning!

Fuel in the fuel is pressurized (Approx. 3 bar). Catch and dispose of escaping fuel.

Installation:

Replace the fuel hose with a fastening collar.
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Without the discharge nozzle on the fuel rail:
Feed hose (1) on the cylinder block to the fuel filter to the body

The drain pipe (2)
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Connect DIS:
Disconnect the water supply of fuel and install the device on June 13 056/057 between both ends of the hose.

A warning!

Fuel in the fuel is pressurized (Approx. 3 bar). Catch and dispose of escaping fuel.

Installation:

Replace the fuel hose with a fastening collar.
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Connect the device June 13 056/057 (T-shaped adapter) with special tool 13 6 055 (adapter) and 13 6 051 (hose with quick-release coupling).
Insert special tool 13 6 051 to quick-release fastener DIS pressure sensor.

A warning!

It should be taken when removing the device! Fuel in the fuel is pressurized (Approx. 3 bar). Catch and dispose of escaping fuel.
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Leave special tool 13 3 010 to conduct follow-up inspections.
The further sequence of the inspection, see.

13 31. . . Checking fuel pressure

With quick-release couplings on the fuel filter:
Release screws, remove the fuel filter housing.
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Open the quick-release coupling (1) of the fuel hose to the fuel rail at the outlet of the fuel filter (1).
Install special tool 13 5 270 between the fuel filter and the fuel hose disconnected (2).

Connect pressure sensor (3) to the DIS tool 13 5 270.

The further sequence of the inspection, see.

13 31. . . Checking fuel pressure
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With the discharge pipe in the fuel rail:
Remove the dust cap (1).
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Connect special tool 13 5 220 to pressure sensor of DIS.
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If necessary, remove the crankcase ventilation hose to the cylinder head cover. After installing the device again to put the hose on the cap.
Fit special tool 13 5 220 to fuel rail and tighten to complete sealing O-ring installed in the device.

Unscrew the check valve (1) on the device, so that the valve in the fuel rail remains closed.
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Start the engine, screw the shut-off valve (1) on the device as long as the manometer indicates a pressure reading. In no case do not screw the shut-off valve to stop, this can damage the valve in the fuel rail.
Removing the device:

Switch off the engine.

Completely turn off valve, disconnect the device from the fuel rail to collect and dispose of escaping fuel.
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The further sequence of the inspection, see.
13 31. . . Checking fuel pressure

Remove the relay (3) of the fuel pump.
1. Relay heating lambda probe system
2. Main relay digital engine electronics (DME)
3. Fuel pump relay
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Connect special tool 61 3 050 to the contacts 87b and 30.
Click on the button and read the value of supply of the fuel pump fuel pressure gauge,

see. Specifications 16 14
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