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Home >> Volkswagen >> 2021 >> Jetta SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Engine System (Cylinder Head & VALVETRAIN System - Service Information - 1.8L; 2.0L TFSI - CPLA, CPPA, CPKA, CPRA)) >> 15 Cylinder Head, VALVETRAIN >> Cylinder Head >> Compression, Checking

Compression, Checking

WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, 2016 Volkswagen Jetta, and 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools And Workshop Equipment Required 

Test Sequence 

NOTE:

Engine oil temperature: minimum 30 °C (86 °F)

Battery voltage at least 12.7 V

-- Remove the ignition coils. Refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

-- Disconnect the connectors for the fuel injectors:

GWWA15-11487Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
  1. For Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-
  2. For Cylinder 1 Fuel Injector 2 -N532- to Cylinder 4 Fuel Injector 2 -N535-

-- Remove the spark plugs using a :3122B  .

-- Check the compression pressure using the :VAG1763  and :VAG1763/6  .

GWWN15-10811Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
NOTE:

Information on using the tester. Refer to the Operating Instructions.

-- Operate the starter until the tester no longer indicates a pressure increase.

Compression Pressure Pressure
New 11.0 to 14.0 bar (160 to 203 psi)
Wear limit 7.0 bar (101.52 psi)
Maximum difference between cylinders 3.0 bar (43.5 psi)

-- Install the spark plugs.

-- Install the ignition coils. Refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

NOTE:

By separating the connections, DTCs will be stored. After the test, check and erase the DTC memory.

-- Turn on the ignition and select the following menu items on the Vehicle Diagnostic Tester:

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