That said, here's a general outline of the procedure. This is not an exhaustive guide, and you'll need a repair manual specific to your vehicle (a Haynes or Chilton manual is recommended) for detailed instructions, torque specifications, and diagrams.
I. Preparation:
1. Safety First: Disconnect the negative battery terminal. Wear safety glasses and gloves.
2. Gather Tools and Parts: You'll need a complete set of metric sockets and wrenches, a timing chain tool kit (specific to the 2.2L engine), a torque wrench, a jack and jack stands, a drain pan, new timing chain, sprockets (crankshaft and camshaft), tensioner, and any necessary gaskets or seals. Refer to your repair manual for the exact parts.
3. Consult Repair Manual: Before starting, thoroughly review the repair manual's instructions for your specific vehicle. Pictures and diagrams are essential.
II. Engine Access:
1. Drain Engine Oil: This is crucial to minimize oil spills during the process.
2. Remove Accessories: You will likely need to remove various accessories like the alternator, power steering pump, and maybe even the air conditioning compressor to gain access to the timing chain cover.
3. Remove Timing Chain Cover: This usually involves removing several bolts and potentially some other components.
III. Timing Chain Replacement:
1. Mark Timing Chain and Sprockets: BEFORE removing anything, carefully mark the positions of the crankshaft and camshaft sprockets relative to each other and the timing chain. This is critical for proper reassembly. Use paint markers or a punch to make precise marks.
2. Remove Timing Chain: Follow the instructions in your repair manual carefully. This may involve using specialized tools to hold the sprockets in place and remove the chain tensioner.
3. Install New Timing Chain and Tensioner: Install the new chain, ensuring it's properly seated on the sprockets and the tensioner is functioning correctly. Use the appropriate tools to maintain tension during installation.
4. Double-Check Timing Marks: After installing the new chain, carefully verify that your timing marks still align perfectly. Any misalignment will cause serious engine damage.
IV. Reassembly:
1. Replace Timing Chain Cover and Gaskets: Install new gaskets to ensure a proper seal. Torque bolts to the specifications in your repair manual.
2. Reinstall Accessories: Reinstall the accessories you removed earlier, ensuring all connections are secure.
3. Refill Engine Oil: Add the correct amount and type of oil.
4. Reconnect Battery: Reconnect the negative battery terminal.
V. Verification:
1. Start Engine: Carefully start the engine and listen for any unusual noises. Check for leaks.
2. Verify Timing: While this is difficult without specialized tools, listen for any erratic engine operation that might suggest incorrect timing.
3. Check Oil Level: Make sure the oil level is correct and check for leaks.
Important Considerations:
* Torque Specifications: Use a torque wrench and adhere to the manufacturer's specifications for all bolts. Over-tightening can damage components, while under-tightening can lead to leaks.
* Cleanliness: Keep the engine bay clean and free of debris during the process.
* Repair Manual: Your repair manual is your bible for this job. Do not attempt this without one.
This is a simplified overview. The actual process is far more involved and requires specialized knowledge and tools. Again, if you're not comfortable with this level of repair, take your vehicle to a qualified mechanic. The cost of a professional repair is far less than the cost of engine damage caused by an improperly installed timing chain.
