However, if you're determined to do it yourself, here's a general overview of the process. This is not an exhaustive list, and specific steps may vary depending on the engine type (4.3L V6, etc.). Always consult a repair manual specific to your 1998 Chevrolet Blazer's engine and year. A Haynes or Chilton manual is a good investment.
Before You Begin:
* Safety First: Disconnect the negative battery terminal. Wear safety glasses and gloves. Work in a well-ventilated area.
* Gather Tools: You'll need a comprehensive set of tools including wrenches, sockets, ratchets, a torque wrench, jack stands, engine hoist, and potentially specialty tools.
* Gather Information: Obtain a repair manual for your specific vehicle. This is crucial for proper torque specifications, component locations, and detailed instructions.
* Prepare the Vehicle: Disconnect the battery, drain fluids (coolant, oil, transmission fluid), and remove any components that interfere with engine access (air intake, belts, hoses, etc.).
General Steps (Highly Simplified):
1. Disconnect Everything: Detach all electrical connectors, vacuum lines, fuel lines, and coolant hoses from the engine. Label everything carefully to ensure proper reassembly. Take photos as you go.
2. Remove Accessories: Remove the alternator, power steering pump, AC compressor, and other accessories attached to the engine.
3. Exhaust System: Disconnect and remove the exhaust manifolds or downpipes.
4. Transmission: Disconnect the transmission from the engine. This is highly dependent on whether you have an automatic or manual transmission and will involve removing the transmission mount and possibly the torque converter.
5. Engine Mounts: Detach the engine mounts securing the engine to the vehicle's frame.
6. Support the Engine: Use an engine hoist to carefully support the engine's weight.
7. Lift the Engine: Slowly and carefully lift the engine out of the engine bay. This might require maneuvering around other components.
After Removal:
* Properly dispose of fluids according to local regulations.
* Clean the engine bay.
Important Considerations:
* Engine Hoist: Using an engine hoist is essential to avoid injury and engine damage.
* Torque Specifications: Use a torque wrench to tighten bolts to the manufacturer's specifications. Incorrect tightening can cause damage.
* Repair Manual: Referring to a repair manual throughout the process is absolutely critical.
* Professional Help: If you're unsure about any step, seek professional help. This is a complex process and mistakes can be costly.
This is a simplified overview. The actual process is much more involved and requires detailed knowledge of automotive mechanics. Again, this is not a DIY project for beginners. Consult a professional mechanic.
