Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

21

KNOCK RTD. CYL.4

Switch off all consumers

Engine running at idle speed, operating temperature

Selector lever in position "P" or "N" (AT only)

Note:

If only one of these cylinders is affected by the ignition retard, check whether the spark plug for the cylinder in question has the prescribed heat rating

If all cylinders are affected by the ignition retard, check that fuel with at least RON 95 is used and that all spark plugs have the prescribed heat rating.

0 °CA

16, 18

E1