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 MANUALSAUDI2004A8REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSIS4.2L - ENGINE MECHANICAL, ENGINE CODE(S): BFM26 - EXHAUST SYSTEM, EMISSION CONTROLSEXHAUST SYSTEM COMPONENTS, REMOVING AND INSTALLINGEXHAUST SYSTEM COMPONENTS, REMOVING AND INSTALLING
2004 Audi A8
Exhaust system components, removing and installing
2004 Audi A8SECTION Exhaust system components, removing and installing
NOTE:
- After exhaust system repairs, make sure exhaust system is not under stress and that it has sufficient clearance from the bodywork. If necessary, loosen double clamps and clamp and align exhaust pipe so that sufficient clearance is maintained to the bodywork and support rings carry uniform loads.
- Install exhaust system free of stress → Exhaust system, installing free of tension .
- Replace self-locking nuts.
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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.