Diesel high pressure pump test kit
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
Model no: Vs216
thank you for purchasing a sealey product. manufactured to a high standard, this product will, if used according to these
instructions, and properly maintained, give you years of trouble free performance.
ensure that Health and Safety, local authority and general
WarNiNg!
workshop practice regulations are strictly adhered to.
diesel high pressure fuel systems can produce pressures over
Refer to
instructions
Wear eye
protection
Wear heavy
duty protective
gloves
1,000bar(14,500psi). Contact with a jet of high pressure fuel
Will penetrate skin resulting in serious injury. If fuel enters the
blood stream it can cause heart failure resulting in death.
1. safety
8 DO NOt Crack fuel lines under pressure or to bleed air from system.
8 DO NOt Check for leaks with hands or by leaning over engine.
9 alWays wear suitable safety eye protection, overalls and heavy duty protective gloves or gauntlets.
8 DO NOt wear jewellery. Tie back long hair.
9 alWays check for leaks from a distance visually and/or by using a long piece of card or wood to wipe against the pipe or
component being checked.
9 alWays wait at least 20 minutes for the fuel system to naturally de-pressurise with the vehicles engine switched off before
loosening/disconnecting pipework.
9 alWays loosen pipework with a cloth wrapped around the tting/nut to reduce the likelihood of spray if system is unexpectedly
pressurised.
9 alWays read manufacturers information for the fuel system being worked on before commencing work on the fuel system.
8 DO NOt use tools if damaged.
9 Maintain tools to ensure that they are in an adequate condition for safe use and optimum performance.
9 Ensure that a vehicle that has been raised by a jack is adequately supported. Use axle stands.
8 DO NOt leave tools in or near the engine. Return tools to suitable storage after use. Account for all tools, parts and components
being used.
9 When not in use, store in a safe dry and childproof place.
9 Keep children and unauthorised persons away from the work area.
9 With high pressure common rail systems, cleanliness is very important. Check before connecting any pipes or hoses that they are
perfectly clean.
9 Make sure vehicle has sufcient fuel before testing.
2. iNtrODuctiON
essential tool for accurately measuring the high pressure fuel circuit of diesel common rail systems. Features 2,000bar gauge, pressure relief
valve and high pressure exible hoses. The kit also includes a set of dummy pump regulator and injector pipe blanks. Kit allows for a variety of
tests to be conducted;
- engine cranking/running pressure test
- Maximum pump pressure test
- Pump pressure regulator test
- Injector leakage test
The VS216 comes with three main components parts which make up the complete kit, enabling a variety of test to be carried out.
- Gauge and hose assembly VS216A (Fig.3)
- dummy pump regulators VS216B (Fig.4)
- Injector pipe blanks VS216C (Fig.5)
3. specificatiON
Model no..................................................................................VS216 dummy Regulators........................................Bosh CP1
Gauge Pressure range ........................................................0-2000bar ........................................Bosh CP3
Safety valve opening pressure……………….......…………......1,300bar ...........................delphi dFP1/dFP3
Hose length ......................................................................500mm(x4) ..............................Denso HP1/HP2
Hose Fittings..............................................M12x1.5(x2), M14x1.5(x2) ......................................Denso HP3
Hose tting adaptors ..............................M12x1.25(x2), M14x1.25(x2) ................................Siemens DCP1
Injector pipe blanks....................................M12x1.5(x6), M14x1.5(x6) ................................Siemens DCP2
© Jack Sealey limited
Original Language Version
VS216 Issue 2 (3) 12/06/18
4. OperatiON
4.1. engine cranking/running pressure test
4.1.1. Connect gauge in series, to the vehicles high pressure circuit. This will allow the engine to operate as normal giving the actual fuel
pressure reading.
4.1.2. parts of kit required – Vs216a
4.1.2.1. Locate high pressure pipe from pump to the fuel rail. If access is difcult, locate the pipes from fuel rail to injector.
4.1.2.2. With fuel system de-pressurised, disconnect accessible high pressure pipe and connect gauge with either M12 or M14 hoses. Make
sure all hose ttings are tight before proceeding. (Fig 1)
4.1.2.3. Connect diesel waste bottle with tube to bottom of gauge. The bottle will collect the waste fuel when the pressure relief valve has
activated. (Fig 1)
4.1.2.4. Crank/start engine. It may take a few seconds for the engine to start due to air in the system. With engine cranking and at idle the
reading should be around 300bar.
4.1.2.5. A non-starting vehicle should still have a reading of 300bar.
4.1.2.6. With engine running, visually check there are no fuel leaks before proceeding. If a fuel leak is found, switch off engine and allow system
to de-pressurise before checking fittings are tight/sealing correctly. once done, start engine and check for leaks again.
4.1.2.7. Increase engine speed making sure the fuel pressure increases accordingly.
4.1.2.8. The most important parameter is that 300bar is achieved with the engine at idle or under engine cranking conditions. If this pressure
is correct, we can deduce that the low-pressure circuit is working properly and the high pressure pump is supplying the minimum
pressure needed to start the engine.
4.1.2.9. In the event that the pressure is correct but the engine does not start, the problem is not likely to be the pump and could be an
electrical/injectors/mechanical fault.
4.1.3. if the pressure does not reach the required pressure, follow the below steps.
4.1.3.1. Test the pressure at the inlet of the high pressure pump with a low pressure tester (not supplied).
4.1.3.2. If the pressure at the high pressure pump inlet is correct, check the maximum pressure of the pump and carry out Injector leakage
test as below.
g.1
4.2. maximum pump pressure test
4.2.1. There are high pressure pumps which disconnect the third piston when the pressure required is low, so they work only with the two
pistons, whereby the engine power requirement is less. The third piston is activated by a solenoid when 600-700bar is reached.
4.2.2. Connect gauge to the vehicles high pressure circuit. This will not allow the engine to start and testing is done with engine cranking
only. Pressure should rise to above 1050bar which shows the pump is working correctly.
4.2.3. parts of kit required – Vs216a
4.2.3.1. Locate high pressure pipe from pump to the fuel rail. If access is difcult, locate the pipes from fuel rail to injector.
4.2.3.2. With fuel system de-pressurised, disconnect accessible high pressure pipe and connect gauge with either M12 or M14 hose. Fit
blanking plug to gauge outlet. Make sure hose ttings are tight before proceeding. (Fig 2)
4.2.3.3. Connect diesel waste bottle with tube to bottom of gauge. The bottle will collect the waste fuel when the pressure relief valve has
activated. (Fig 2)
4.2.3.4. Crank engine. Pressure should quickly increase to above 1050bar. This indicates the pump is working correctly. If pressure reading
is low it indicates the pump or pressure regulator is at fault. To identify which is faulty carry out a pump pressure regulator test.
note – A problem with the pressure sensor (located on the fuel rail) can send the wrong information to the PCM and therefore give the
wrong information to the pressure regulator causing it to open early resulting in a low pressure reading. This can be checking using an
eoBd tool with live data and comparing the actual pressure from the gauge to the reading from the eoBd tool.
4.3. pump pressure regulator test
4.3.1. Essential test to determine if the fault is caused by a faulty pump or regulator when there is a low maximum pressure.
4.3.2. parts of kit required – Vs216a & Vs216B
4.3.2.1. With fuel system de-pressurised, remove pressure regulator from pump.
4.3.2.2. Select the required dummy regulator from the VS216B kit and fit to pump.
4.3.2.3. Carry out ‘Maximum pump pressure test refer to section 4.2. If the pressure now increases to above 1050bar it indicates the regulator
is at fault. If pressure is still low the pump will be at fault.
note – A problem with the pressure sensor (located on the fuel rail) can send the wrong information to the PCM and therefore give the
wrong information to the pressure regulator causing it to open early resulting in a low pressure reading. This can be checking using an
eoBd tool with live data and comparing the actual pressure from the gauge to the reading from the eoBd tool.
g.2
© Jack Sealey limited
Original Language Version
VS216 Issue 2 (3) 12/06/18
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