Checking Compression - Skoda Octavia III 2013 Workshop Manual

Octavia III 2013 ➤ , Octavia III 2014 ➤
1.8/132 kW TSI; 2.0/162 kW TSI engines - Edition 01.2015
– Rotate the V-ribbed belt pulley with counterholder - T10355-
into the "TDC" position.
• The notch on the V-ribbed belt pulley for crankshaft and the
marking for the bottom cover for timing chain must be opposite
each other -arrow-
Installation is carried out in the reverse order. However, pay at‐
tention to the following:
– Install camshafts ⇒ page 124
– Change engine oil ⇒ Maintenance ; Booklet Octavia III .
– Replace coolant ⇒ page 182
Tightening torques:
• Cylinder head ⇒ page 108
• Coolant pipes ⇒ page 205
• Exhaust gas turbocharger
• Exhaust pipe ⇒ page 326
3.3

Checking compression

Special tools and workshop equipment required
♦ Spark plug wrench , e.g. -3122 B-
♦ Compression tester , e.g. -V.A.G 1763-
Test conditions
• Engine oil temperature must be at least 30°C
• Battery voltage at least 12.7 V.
Test sequence
– Remove ignition coils with power output stage
– Disconnect electrical plug connections:
1 - for injection valves -N30...N33-
2 - for injection valves 2 -N532...N535-
– Remove the spark plugs with spark plug wrench - 3122 B- .
– Check the compression pressure with the compression gauge
inspection device - V.A.G 1763- and the adapter - V.A.G
1763/6- .
Note
Use of tester ⇒ Operating Instructions .
– Have a second mechanic operate the starter with the throttle
valve fully opened until no further pressure rise is indicated by
the tester.
Compression readings
New engine
1.1...1.4 MPa
(11...14 bar)
118
Rep. gr.15 - Cylinder head, valve gear
.
.
⇒ page 260
⇒ page 342
Wear limit
0.7 MPa
(7 bar)
.
Maximum difference
between cylinders
0.3 MPa
(3 bar)