Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2014FORESTER 2.5I, ENG CD FB25BA, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEMSFUEL INJECTION FUEL SYSTEMS (H4DO)FUEL SYSTEM TROUBLE IN GENERALINSPECTION
2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard Trans
Fuel System Trouble in General: Inspection
2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard TransSECTION Inspection
| Trouble | Possible cause | Corrective action |
|---|---|---|
| Insufficient fuel supply to fuel injector | a. Fuel pump does not operate. | |
| ◦ Defective terminal contact | Inspect contact, especially ground, and tighten it securely. | |
| ◦ Trouble in electromagnetic or electronic circuit parts | Replace the faulty parts. | |
| b. Decline of fuel pump function | Replace the fuel pump. | |
| c. Clogged fuel filter | Replace the fuel filter. Clean or replace the fuel tank if necessary. | |
| d. Clogged or bent fuel line pipe, hose or tube | Clean, correct or replace the fuel line pipe, hose or tube. | |
| e. Air is mixed in fuel system. | Check the fuel line connections, correct or replace the defective part. | |
| f. Damaged diaphragm of pressure regulator | Replace the fuel filter assembly. | |
| Leakage or blow out of fuel | a. Loose connections of fuel line pipe, hose or tube | Check the fuel line connections, correct or replace the defective part. |
| b. Cracked fuel line pipe, hose or tube | Replace the fuel line pipe, hose or tube. | |
| c. Cracked fuel tank or defective welding part | Replace the fuel tank. | |
| d. Clogged or bent fuel line pipe, hose or tube | Clean, correct or replace the fuel line pipe, hose or tube. | |
| Gasoline smell inside of compartment | a. Loose connections of fuel line pipe, hose or tube | Check the fuel line connections, correct or replace the defective part. |
| b. Defective gasket of fuel saucer or fuel filler pipe assembly | Correct or replace the gasket. | |
| c. Defective canister | Replace the canister. | |
| Defective fuel gauge | a. Defective operation of fuel level sensor | Replace the fuel level sensor. |
| b. Defective operation of combination meter < Ref. to COMBINATION METER , PROCEDURE, Basic Diagnostic Procedure. > | Replace the combination meter. | |
| c. Defective operation of integrated unit | Replace the integrated unit. | |
| Noise | a. Large operation noise or vibration of fuel pump | Replace the fuel pump. |
NOTE:
- When the vehicle is left unattended for an extended period of time, water may accumulate in the fuel tank. Fill fuel fully to prevent the problem.
- In snow-covered areas, mountainous areas, skiing areas, etc. where ambient temperatures drop to 0°C (32°F) or less throughout the winter season, use a water removing agent in the fuel system to prevent freezing fuel system and accumulating water.
- When water is accumulated in fuel filter, fill the water removing agent in the fuel tank.
- Before using water removing agent, follow the cautions noted on the bottle.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.