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.
2001 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE
Spark Test: 3.0L
- Remove coil from spark plug. Leave original spark plug installed in cylinder head. Install new spark plug to coil. Ground spark plug against cylinder block. Crank engine with throttle valve fully open and check for spark.
- If spark exists, check fuel pump operation. See FUEL PUMP OPERATION under FUEL SYSTEMS. If spark does not exist, check ignition system. See IGNITION SYSTEM in SYSTEM & COMPONENT TESTING article.
- If ignition system wiring and control system are okay and spark still does not exist, check resistance of camshaft position sensor. See CAMSHAFT POSITION SENSOR RESISTANCE . If camshaft position sensor resistance is within specification, go to next step. If camshaft position sensor resistance is not within specification, replace camshaft position sensor and retest for spark. See IGNITION SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article.
- Check resistance of crankshaft position sensor. See CRANKSHAFT POSITION SENSOR RESISTANCE . If crankshaft position sensor resistance is not within specification, replace crankshaft position sensor and retest for spark. See IGNITION SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article.
Factory Service Tools
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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.
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