Checking for air leakage in the intake system

WARNING: This page is about a different car, the 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Check for air leakage according to Check for air leaks in the intake system .

Is there air leakage?

YES
Refer to Fault-tracing information
NO
Refer to Checking for air leakage in the exhaust system