Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
7
High-pressure pump
⇒ a7.2 nd installing high-pressure pump”, page 488
⇒ a7.3 nd installing high-pressure pipe”, page 492
7.1
Assembly overview - high-pressure pump
486
Rep. gr.24 - Mixture preparation - injection
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
1 - Bolts for high-pressure
pump
❑ Tighten one turn al‐
ternately until flange
of high-pressure pump
makes contact with
vacuum pump
❑ Final specified torque
Bolts M6: 8 Nm + turn
90° further, renew bolts
after removing
Bolts, M8: 20 Nm
2 - Fuel pressure regulating
valve -N276-
3 - Electrical connector
❑ For fuel pressure regu‐
lating valve -N276-.
4 - High-pressure pump
❑ Fuel tank contains elec‐
tric fuel pump which
pumps fuel to me‐
chanical high-pressure
pump.
❑ When installing the
high-pressure pump, it
is essential to ensure
that no dirt enters the
fuel system.
❑ Install fuel lines free of
stress.
❑ Check O-ring and re‐
new if damaged.
❑ Removing and instal‐
ling ⇒ page 488
5 - O-ring
❑ Renew if damaged
6 - Roller tappet
❑ Installation position: roller faces towards camshaft
7 - Connecting piece for fuel line
❑ Only for engines with intake manifold injectors
❑ When renewing high-pressure pump, the connecting piece may have to be transferred from the old
pump
❑ Loosen and tighten connecting piece using a »long« 15 mm socket
❑ Union, 15 Nm
❑ Plug, 20 Nm
8 - Spring-type clip
❑ Renew
9 - Fuel line
❑ Only for engines with intake manifold injectors
❑ To fuel rail for injectors (intake manifold).
10 - High-pressure pipe
❑ To fuel rail for injectors (combustion chamber).
7. High-pressure pump
487
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
❑ Moisten ball of high-pressure pipe with engine oil
❑ High-pressure pipe must be free of tension when installed (make sure all parts are clean)
❑ Removing and installing ⇒ page 492
❑ Union nut 27 Nm, wait for 1 minute and retighten to 27 Nm
11 - High-pressure pipe union
❑ When detaching from high-pressure pipe, hold connection to prevent it from twisting
❑ If the connecting piece is released, it must be renewed.
❑ 40 Nm
12 - Fuel supply line
13 - Spring-type clip
❑ Renew
7.2
Removing and installing high-pressure
pump
Special tools and workshop equipment required
♦ Tool insert, 17 mm -V.A.G 1331/6-
Note
♦ High-pressure pump may only be removed when the engine
is cold.
♦ When installing the high-pressure pump, it is essential to
ensure that no dirt enters the fuel system.
♦ Collect escaping fuel with a cleaning cloth.
♦ Check O-ring of high-pressure pump and renew it if dam‐
aged.
released, it must be renewed.
♦ The intake manifold injectors are not fitted on all engines.
Removing
– Remove engine cover panel ⇒ page 81 .
– Remove air filter housing ⇒ page 443 .
– Release fastener -arrow- and detach wiring duct -4- from
coolant pipe.
488
Rep. gr.24 - Mixture preparation - injection
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Unscrew bolts -1, 2- and -3-.
– Unscrew bolt -1- for air pipe.
– Push air pipe aside slightly and unscrew pipe clamp -arrow-.
7. High-pressure pump
489
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
CAUTION
The fuel system is pressurised.
Danger of injury through fuel spray.
– Wear protective goggles.
– Wear protective gloves.
– To release pressure, wrap a clean cloth around the con‐
nection and carefully loosen the connection.
– Counterhold on hexagon -A- and unscrew union nut -arrow-.
– Pull electrical connector -1- from fuel pressure regulating
valve -N276-.
– Remove fuel hoses -2- and -3-.
– Unscrew bolts -arrows-.
– Carefully pull out high-pressure pump. When doing so, en‐
sure that high-pressure pipe is not bent.
– Remove roller plunger.
Installing
– Before inserting roller plunger, check it for damage and re‐
new it, if necessary.
– Insert roller plunger into vacuum pump as shown.
– Turn crankshaft until roller tappet is at bottom dead centre.
– Moisten ball of high-pressure pipe with engine oil.
– Inspect O-ring of high-pressure pump, and coat it slightly
with clean engine oil.
– Insert high-pressure pump into vacuum pump. When doing
this, take note of high-pressure pipe.
490
Rep. gr.24 - Mixture preparation - injection
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Tighten bolts -arrows- one turn alternately until flange of
high-pressure pump makes contact with vacuum pump.
– Tighten bolts to specified torque, tightening torque ⇒ page
486 .
– Tighten union nut of high-pressure pipe hand-tight.
– Install clamp -arrow-, and tighten it to 5 Nm.
– Counterhold on hexagon -A-, and tighten union nut -arrow-.
– Wait at least 1 minute and check tightening torque.
– Connect fuel hoses -2- and -3-, and secure them with spring-
type clips.
7. High-pressure pump
491
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Connect connector -1- to fuel pressure regulating valve -
N276-.
Further assembly is basically a reverse of the dismantling se‐
quence.
Note
Upon completion of any repair work, start the engine and check
the fuel system for leaks.
Specified torques
♦ ⇒ o7.1 verview - high-pressure pump”, page 486
7.3
Removing and installing high-pressure
pipe
Special tools and workshop equipment required
♦ Socket, 17 mm -T10456-
♦ Tool insert, 17 mm -V.A.G 1331/6-
492
Rep. gr.24 - Mixture preparation - injection
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Removing
– Remove engine cover panel ⇒ page 81 .
– Remove air pipe between turbocharger and charge air cool‐
er ⇒ page 410 .
– Unbolt clamp -arrow-.
CAUTION
The fuel system is pressurised.
Danger of injury through fuel spray.
– Wear protective goggles.
– Wear protective gloves.
– To release pressure, wrap a clean cloth around the con‐
nection and carefully loosen the connection.
– Loosen union nut on fuel rail -arrow- using socket AF 17 mm
-T10456-.
– Counterhold on hexagon -A-, and loosen union nut -arrow-.
Remove high-pressure pipe.
7. High-pressure pump
493
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
Installing
– Moisten balls of high-pressure pipe with engine oil and install
high-pressure pipe.
– Tighten union nuts by hand and align high-pressure pipe
free of stress.
– Install clamp -arrow-, and tighten it to 5 Nm.
– Tighten union nut on fuel rail -arrow- using socket AF 17 mm
-T10456-.
– Counterhold on hexagon -A-, and tighten union nut -arrow-
using open end spanner insert, AF 17 mm -V.A.G 1331/6-.
494
Rep. gr.24 - Mixture preparation - injection
Arteon 2018 ➤, Arteon 2021 ➤, Arteon Shooting Brake 2021 ➤, Golf 2013 ➤, Golf 2 ...
4-cyl. direct injection engine (1.8 l and 2.0 l, 4 V, EA 888 gen III, turbocharger, chain drive) - Edition
02.2021
– Wait at least 1 minute and check tightening torque of union
nuts.
Further assembly is basically a reverse of the dismantling se‐
quence.
Note
Upon completion of any repair work, start the engine and check
the fuel system for leaks.
Specified torques
♦ ⇒ o7.1 verview - high-pressure pump”, page 486
7. High-pressure pump
495
2024 VW Tiguan Owner's Manual
