However, if you're determined to do it yourself, here's a general overview. This is not a complete guide, and you'll need a more detailed repair manual specific to your 1996 Ford Aspire (with engine displacement specified) for precise instructions and torque specifications. A Haynes or Chilton manual is a good investment.
Before You Begin:
* Gather Tools: You'll need a complete set of metric sockets and wrenches, a timing belt tool kit (including a crankshaft pulley holder), jack stands, a wheel chock, a torque wrench, and possibly a spring compressor depending on the belt tensioner design.
* Consult a Repair Manual: A repair manual specific to your car's year and engine is absolutely essential. It will provide detailed diagrams, torque specifications, and step-by-step instructions.
* Gather Parts: You'll need a new timing belt, tensioner pulley (if necessary), and water pump (often replaced as a preventative measure since you're already in there). It's wise to also replace the idler pulleys if they show any wear.
General Steps (This is a simplified overview and may not apply exactly to your car):
1. Safety First: Disconnect the negative battery terminal. Support the vehicle securely on jack stands.
2. Access the Timing Belt: Remove components that obstruct access to the timing belt, which typically involves removing belts, pulleys, and possibly other components around the engine. Your repair manual will guide you on this.
3. Locate Timing Marks: Carefully find the timing marks on the crankshaft and camshaft(s). These marks must be perfectly aligned before removing the old belt. Their precise location will be shown in your repair manual.
4. Remove the Old Timing Belt: Loosen the timing belt tensioner (using the correct tool) and remove the old timing belt. Note how the belt runs over the pulleys – take photos if needed.
5. Inspect Components: Carefully inspect all the components—pulleys, tensioner, and water pump—for wear and tear. Replace any worn or damaged parts.
6. Install the New Timing Belt: Carefully install the new timing belt, ensuring it's seated correctly on all pulleys and that the timing marks are aligned. Tighten the tensioner using the appropriate tool to achieve the specified tension. Consult your repair manual for the correct procedure and tension specifications.
7. Reassemble: Reinstall all components removed in step 2, carefully reversing the disassembly process.
8. Double Check Timing: After reassembly, double-check that the timing marks are still perfectly aligned.
9. Reconnect Battery: Reconnect the negative battery terminal.
10. Start the Engine: Carefully start the engine. Listen for any unusual noises.
Important Considerations:
* Timing Marks: Incorrect timing mark alignment can cause catastrophic engine damage. Take your time and be absolutely certain of their alignment.
* Tension: The timing belt must be under the correct tension. Too loose and it will skip; too tight and it will put undue stress on components.
* Torque Specifications: Use a torque wrench and follow the specified torque values from your repair manual.
Again, this is a simplified overview. This is a complex procedure with the potential for severe engine damage if done incorrectly. Using a repair manual specific to your 1996 Ford Aspire is crucial. If you're unsure about any step, consult a qualified mechanic. It's far cheaper to pay a professional than to replace a damaged engine.
