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.
2003 Subaru Outback F4-2.5L SOHCFACTORY OEM SERVICE PROCEDURE
Ignition Cable: Testing and Inspection
Spark Plug Cord
INSPECTION
Check for:
1. Damage to cords, deformation, burning or rust formation of terminals
2. Resistance values of cords
Resistance value:
# 1 cord: 5.6 - 10.6
# 2 cord: 7.3 - 13.7
# 3 cord: 5.9 - 11.1
# 4 cord: 7.3 - 13.7
INSPECTION
Check for:
1. Damage to cords, deformation, burning or rust formation of terminals
2. Resistance values of cords
Resistance value:
# 1 cord: 5.6 - 10.6
# 2 cord: 7.3 - 13.7
# 3 cord: 5.9 - 11.1
# 4 cord: 7.3 - 13.7
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.