SsangYong Rodius (2013 year). Service manual — part 53

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Took kit for low pressure line

Tool kit for high pressure line

2. MAINTENANCE AND INSPECTION

1) Maintenance Procedures for DI Engine Fuel System

Always keep the workshop and lift clean (especially, from dust).

Always keep the tools clean (from oil or foreign materials).

Wear a clean vinyl apron to prevent the fuzz, dust and foreign materials from getting into fuel

system. Wash your hands and do not wear working gloves.

1.

2.

3.

Follow the below procedures before starting service works for fuel system.

If the problem is from HP pump, fuel supply line or injector, prepare the clean special tools and

sealing caps to perform the diagnosis for DI engine fuel system in this manual. At this point,

thoroughly clean the related area in engine compartment.

4.

Clean the engine compartment before starting service works.

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Plug the removed components with clean and undamaged sealing caps and store it into the box to

keep the conditions when it was installed.

6.

Fuel filter assembly

Follow the job procedures. If you find a defective component, replace it with new one.

5.

Once disconnected, the fuel pipes between HP pump and fuel rail and between fuel rail and each

injector should be replaced with new ones. The pipes should be tightened tospecified tightening

torques during installation. Over or under torques out of specified range may cause damages and

leaks at connections. Once installed, the pipes have been deformed according to the force during

installation, therefore they are not reusable. The copper washer on injector should be replaced with

new one. The injector holder bolt should be tightened to specified tightening torque as well. If not, the

injection point may be deviated from correct position, and it may cause engine disorder.

To supply the fuel to transfer line of HP

pump press the priming pump until it

becomes hard.

7.

Priming pump

Check the installed components again and connect the negative battery cable. Start the engine and

check the operating status.

With Scan Tool, check if there are current faults and erase the history faults.

8.

9.

Priming pump cap

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2) Diagnostic Test for Engine Fuel System

(1) Overview

If a DTC is displayed on the diagnostic device, check the low pressure- and high pressure fuel

systems before removing the components.

To run the system properly, the electric system must be intact but for the DI engine, the fuel pressure

should be measured also when there is a malfunction even after the diagnostic test with a diagnostic

device.

(2) Hydraulic system

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(3) Excessive backleak of injector

Excessive injector backlea

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Occurs when the injector control valve is not sealed due to the entry of the foreign materials.

Example:

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Entry of foreign materials

Burned out and worn HP pump

Mechanical damage inside the injector

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