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 MANUALSSUBARU1990XT-6 4WD L6-2.7L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSCATALYTIC CONVERTERTESTING AND INSPECTION
1990 Subaru XT-6 4WD L6-2.7L SOHC
Catalytic Converter: Testing and Inspection
1990 Subaru XT-6 4WD L6-2.7L SOHCSECTION Testing and Inspection
1. With catalytic converter removed from vehicle, inspect visible internal components for signs of melting, clogging or other damage.
2. Check converter housing for severe dents, cracks or other external damage.
3. Shake converter and listen for loose components.
4. Replace converter if any of the above conditions are encountered.
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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.