Compression Test Specifications for AAZ engine

[erice1984]

Was curious what Bentley says the compression tests should show for a normal engine and the wear limit.

[erice1984]

Okay, I found a haynes manual and it states

Minimum: 279psi
Deviation: <20% from the highest reading

These are numbers from a US TDI motor.  I figured the compresion ratio is the same in both 1.9L TD and TDI so the sompression test specs would be the same.

Let me know if this is incorrect.

[Vincent Waldon]

The TDI is a very different engine design, so the specs are not transferable.

The AAZ specs (Bentley pg 15a-2) are:

new:  493 psi minimum
wear limit: 377 psi minimum
max difference between cylinders: 73 psi

[erice1984]

Thanks for clarifying Vincent