Diesel fuel injection system Renault 19

Diesel injection system — design description
The figure schematically shows the movement of fuel in the diesel injection system: from the tank (7), fuel enters the fuel filter (1) through the supply line (8). The purified diesel fuel is then sucked into the...

High pressure fuel pump (HPFP)
Bosch high pressure fuel pump for naturally aspirated diesel (47 kW) disassembled 1 - drive gear; 2 - front bracket of the fuel injection pump; 3 - cold engine starting device; 4 - rear fuel injection pump bracket; 5 -...

Operation of the high-pressure fuel pump (HPFP)
The picture on the left shows a Bosch fuel injection pump, on the right - a Roto fuel injection pump. The solenoid control shut-off device (2) interrupts the fuel supply to the pump when the ignition is off. If you want...

Boost pressure enrichment
The boost pressure enrichment principle. The boost pressure regulator is located on the side below the fuel injection advance clutch and is involved in synchronizing the pump supply of the required amount of fuel for...

Turbocharged diesel engine
Nozzles The injectors are the final stage of the diesel injection system. Their job is to inject fuel under high pressure into the swirl chamber. Only if the fuel pressure rises above 125-140 bar, the injector needle...

Fuel injector faults
If one injector is faulty, it can be identified on a running engine as follows: unscrew the union nuts of the high-pressure fuel lines on the injectors one by one and tighten them again. If, despite the removed line,...

Self-help in case of a malfunction in the injection system
Injector elements 1 - nozzle; 2 - plugs on the free fuel outlet pipe of the 4th cylinder injector; 3 - high pressure injection line; 4 - connecting hose between two nozzles. Roto High Pressure Fuel Pump Components 1 -...

Setting the start of the injection cycle of the high-pressure fuel pump
After adjusting the tension of the toothed drive belt or after replacing it, it is necessary to check the adjustment of the high-pressure fuel pump and, if necessary, adjust it. For this purpose, the toothed drive belt...

Throttle control cable (gas cable)
The throttle control cable is secured with a clamp (arrow) on the spherical head of the throttle lever of the high-pressure fuel pump. After installation, the throttle control cable (4) must be adjusted by pulling the...

Idle speed check
It is impossible to adjust the idle speed on a diesel engine using a regular tachometer. A special device must be used to precisely control the idle speed. An experienced car enthusiast can change the speed by ear if...

Exhaust emission control (AU)
Since December 1993, diesel vehicles must be tested for exhaust emissions every two years (abbreviated: AU). This test measures the amount of soot in the exhaust gas. The so-called nephelometry, using a combustion...

Troubleshooting fuel injection pumps
High pressure fuel pump malfunction Its reason Troubleshooting A. A cold engine starts poorly or does not start at all. 1. There is no fuel in the tank. 2. The preheating device did not work long enough. 3. The fast...

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Other sections on other Renault models

➽ Power unit: Fuel injection Renault Fluence 1 (2009-2020, petrol)
➽ Power unit: Injection system (petrol) Renault Scenic 1 (1996-2003)
➽ Power unit: Injection system Renault Megan 2 (2002-2009, petrol)
➽ Power unit: Fuel injection (diesel) Renault Laguna 2 (2001-2007)
➽ Power unit: Diesel injection system (K9K) Renault Duster 1 (2009-2017)

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