Complaint: starting problems

WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.

Run engine briefly at idle speed and switch off.
Note measuring value when engine is stationary.
Read off measured value again after approx. 20 to 30 minutes with engine stopped.
The special tool 13 3 010 (hose clip) is needed for the following check.