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 MANUALSCHEVROLET1985CAMARO Z28, 5.0 H, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMCATALYTIC CONVERTERSERVICE PROCEDURESCATALYST REPLACEMENT
1985 Chevrolet Camaro Z28, 5.0 H, Standard
Catalyst Replacement
1985 Chevrolet Camaro Z28, 5.0 H, StandardSECTION Catalyst Replacement
- Raise vehicle on hoist. Attach vacuum aspirator device (J-25077) to exhaust pipe. See Fig 2 . Attach air supply to air hose fitting on vacuum pump. Apply enough air pressure (minimum 80 psi) to hold catalytic beads in place.
- Drive a small chisel between fill plug and converter housing, making sure not to damage housing. Continue driving small chisel into plug until plug is deformed enough to be removed with pliers.CAUTION: DO NOT pry plug from converter housing or damage to housing may result.
RENDER: 1.0x
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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.