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.
1991 Audi 100 BaseFACTORY OEM SERVICE PROCEDURE
Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) |
|---|---|
| Distributor Hold-Down Bolt | 18 (24) |
| Fuel Injection Valve Fuel Line Nut | 18 (24) |
| Fuel Return Line Fitting | 15 (20) |
| Fuel Supply Line Union Bolts | 15 (20) |
| Oxygen Sensor | 37 (50) |
| Throttle Valve Housing Mounting Bolts | 15 (20) |
| INCH Lbs. (N.m) | |
| Cold Start Valve Mounting Bolts | 87 (10) |
| Coolant Temperature Sensor | 87 (10) |
| EGR Valve Mounting Bolts | 87 (10) |
| Fuel Distributor Mounting Bolts | 30 (3.4) |
| Fuel Line Fittings | 87 (10) |
Factory Service Tools
Use the Manual With the Right Hardware
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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.