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Polo 3 (1995-2003) Polo 4 (2001-2009)

Checking the injectors

Injectors are tested on the stand (pic. 6.75). At the moment of spraying the fuel, check the opening pressure.

Engines AEY, AFN, ANV, AHU, AKW

Specification value: new nozzle - 190-200 bar, allowable wear - 170 bar.

ALE engine

Specification value: new nozzle - 220-230 bar, allowable wear - 200 bar.

This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian

Previous articles
Checking the valve timing
Removal and installation of injection pump
Reading a block of measured values
Clearing the fault memory
Fault memory interrogation
Connecting a fault code reader VAG 1551
Self-diagnosis of the injection system
Diesel injection control system
Checking the mechanical EGR valve
Checking the elements of the exhaust gas recirculation system

Next articles
Checking the crankshaft speed sensor
Checking the coolant temperature sensor
Checking the temperature sensor in the intake manifold (on engines AFN, AHU, ALE)
Checking the intake air temperature sensor (on engines AEY, ANV, AKW)
Checking the fuel temperature sensor
Checking the nozzle needle displacement sensor
Fault codes

Similar articles from other manuals for VW cars:
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Checking a car on the ground Volkswagen Golf 1 (1974-1984, petrol)
Checking the injectors (petrol engine.) Volkswagen Touareg 1 (2002-2006)
Checking the functioning of the intake manifold flap Volkswagen Tiguan 1 (2007-2015)
Checking the engine oil level and changing it Volkswagen Sharan 1 (1995-2000)
Checking oil leakage by external inspection Volkswagen Transporter T4 (1990-2003)
Checking battery voltage at no load Volkswagen Caddy 3 (2003-2010)

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