Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Inspection

IGNITION(H4DO) > Spark Plug

INSPECTION

1. Check the spark plug for abnormalities. If defective, replace the spark plug.

(A)

Terminal damage

(B)

Crack or damage in insulator

(C)

Damaged gasket

2. Check the spark plug electrode and condition of the insulator. If abnormal, check and repair the cause and replace the spark plug.

(1) Normal:

Brown to grayish-tan deposits and slight electrode wear indicate correct spark plug heat range.

(2) Carbon fouled:

Dry fluffy carbon deposits on the insulator and electrode are mostly caused by slow-speed driving in town, weak ignition, too rich fuel mixture, etc.

(3) Oil fouled:

Wet black deposits show oil entrance into combustion chamber through worn piston rings or increased clearance between valve guides and valve stems.

(4) Overheating:

A white or light gray insulator with black or brown spots and bluish burnt electrodes indicate engine overheating, wrong selection of fuel, or loose spark plugs.

3. Using a nylon brush, etc., clean and remove the carbon or oxide deposits from the spark plug. If deposits are too stubborn, replace the spark plugs. After cleaning the spark plugs, check the spark plug gap “L” using a gap gauge. If it is not within the standard, replace the spark plug.

NOTE:

Never use a plug cleaner.

Do not use a metal brush as it may damage the electrode area.

Spark plug gap L:

Standard

1.0 — 1.1 mm (0.039 — 0.043 in)

Spark plug
...

Removal
IGNITION(H4DO) > Spark PlugREMOVALSpark plug:Refer to “SPECIFICATION” for spark plug. General Description > SPECIFICATION">1. RH SIDE1. Disconnect the ground cable from batt ...

Other materials:

Rear center seatbelt
Center seatbelt tongue plate Connector (tongue) Connector (buckle) Center seatbelt buckle WARNING Fastening the seatbelt with the webbing twisted can increase the risk or severity of injury in an accident. When fastening the belt after it is pulled out from the retractor, ...

Bluetooth settings
Touch the tab to set Bluetooth. Item Function BT Devices Connection Select to pair/connect the Bluetooth devices. In-Car-Device setting Select to enter the Bluetooth device name or PIN-code. For details, refer to "Bluetoothsettings" F5-65. ...

Air cleaner element
WARNING Do not operate the engine with the air cleaner element removed. The air cleaner element not only filters intake air but also stops flames if the engine backfires. If the air cleaner element is not installed when the engine backfires, you could be burned. CAUTION When replacing the ...

© 2016-2025 Copyright www.sucross.com