Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Engine cooling system trouble in general Inspection

Subaru Crosstrek Service Manual / Cooling(h4do) / Engine cooling system trouble in general Inspection

COOLING(H4DO) > Engine Cooling System Trouble in General

INSPECTION

Trouble

Possible cause

Corrective action

Over-heating

a. Insufficient engine coolant

Replenish engine coolant, inspect for leakage, and repair it if necessary.

b. Defective thermostat

Replace.

c. Malfunction of water pump

Replace.

d. Clogged engine coolant passage

Clean.

e. Improper ignition timing

Inspect and repair ignition control system. Basic Diagnostic Procedure">

f. Clogged or leaking radiator

Clean, repair or replace.

g. Defective radiator cap

Replace.

h. Improper engine oil in engine coolant

Replace the engine coolant. If ineffective, check, repair or replace engine components.

i. Air/fuel mixture ratio too lean

Inspect and repair the fuel injection system. Basic Diagnostic Procedure">

j. Excessive back pressure in exhaust system

Clean or replace.

k. Insufficient clearance between piston and cylinder

Adjust or replace.

l. Slipping clutch

Repair or replace.

m. Dragging brake

Adjust.

n. Malfunction of radiator fan

Inspect the radiator fan relay, engine coolant temperature sensor or fan motor and replace them.

Over-cooling

a. Ambient temperature extremely low

Partly cover radiator front area.

b. Defective thermostat

Replace.

Engine coolant leaks

a. Loosened or damaged connecting units on hoses

Repair or replace.

b. Leakage from water pump

Replace.

c. Leakage from water pipe

Repair or replace.

d. Leakage around cylinder head gasket

Retighten cylinder head bolts or replace cylinder head gasket.

e. Damaged or cracked cylinder head and cylinder block

Repair or replace.

f. Damaged or cracked thermostat cover

Repair or replace.

g. Leakage from radiator

Repair or replace.

Noise

a. Defective radiator fan

Replace.

b. Defective water pump bearing

Replace water pump.

c. Defective water pump mechanical seal

Replace water pump.

Installation
COOLING(H4DO) > Water PumpINSTALLATION1. WATER PUMP PULLEY1. Using the ST, install the water pump pulley.ST1 18355AA000PULLEY WRENCHST2 18334AA030PULLEY WRENCH PIN SETTightening torque:14 N&m ...

Radiator cap Inspection
COOLING(H4DO) > Radiator CapINSPECTION1. Check that the radiator cap does not have deformation, cracks or damage.2. Attach the radiator cap tester to radiator cap.3. Increase pressure until the rad ...

Other materials:

Maintenance precautions
When maintenance and service are required, it is recommended that all work be done by an authorized SUBARU dealer. If you perform maintenance and service by yourself, you should familiarize yourself with the information provided in this section on general maintenance and service for your SU ...

Safety tips regarding the BSD/RCTA approach indicator light/warning buzzer
In the following cases, operation of the BSD/RCTA approach indicator light and the warning buzzer may be delayed or the system may fail to issue these warnings. When a vehicle moves to the neighboring lane from a lane next to the neighboring lane When driving on a steep incline or on ...

Inspection
DRIVE SHAFT SYSTEM > Rear Hub Unit BearingINSPECTION1. Moving the rear tire up and down by hand, check there is no looseness in bearing, and check the wheel rotates smoothly.CAUTION:If there is unsmooth sliding operation or abnormal noise in the bearing, replace the rear hub unit bearing.2. Inspe ...

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