Phase 1: Assessment and Preparation
1. Inspect the Engine: Thoroughly examine the engine compartment for obvious signs of deterioration, such as rust, corrosion, rodent nests, or fluid leaks. Pay close attention to the hoses, belts, wiring, and the condition of the battery.
2. Check Fluids: This is crucial. Check the engine oil level. If it's low or absent, add fresh oil appropriate for your engine (check your owner's manual). Check the coolant level and condition. If the coolant is old, rusty, or low, it needs to be flushed and replaced with a fresh mixture of coolant and distilled water. Check the brake fluid level and condition as well.
3. Battery: The battery is almost certainly dead. Remove it and have it tested at an auto parts store. If it's beyond repair, replace it with a new one. Even if it tests "good," consider charging it fully before proceeding.
4. Fuel System: The fuel system is the biggest concern. Old gasoline can gum up the carburetor or fuel injectors and damage the engine.
* If Carburetor: Disconnect the fuel line from the carburetor. You'll need to drain the old fuel from the tank and potentially the carburetor bowl (if accessible). Then, you'll likely need to clean or rebuild the carburetor.
* If Fuel Injection: You'll need to either drain the fuel tank or use a fuel pressure tester to determine if there's sufficient pressure. You may need to add fresh fuel. Contaminated fuel can easily clog injectors.
5. Lubrication: Turn the engine over several times by hand (using a wrench on the crankshaft bolt if possible, being careful not to strip it). This circulates oil and ensures it reaches all parts of the engine before starting.
6. Spark Plugs: Inspect the spark plugs. They may be corroded or fouled. Consider replacing them.
Phase 2: Initial Start Attempt
1. Reconnect the Battery: Ensure all battery connections are clean and tight.
2. Prime the Engine (If Carburetor): If the engine is equipped with a carburetor, several short bursts of the accelerator pump may help prime the engine with fuel. (Do not crank the engine for extended periods yet).
3. Initial Cranking: Have someone crank the engine while you observe for any unusual noises or leaks. If it doesn't start immediately, don't keep cranking for long periods—give the starter a rest to prevent overheating and damage. Try again after a short break.
4. Listen Carefully: Pay attention to any unusual sounds like knocking, grinding, or squealing. These could indicate serious problems. If you hear any of these, STOP immediately.
Phase 3: Post-Start Checks
1. Engine Operation: Once running, let the engine run for a few minutes at idle to allow it to warm up. Check for leaks and unusual smoke.
2. Fluid Levels: Check all fluid levels again after the engine has run.
3. Further Inspection: If the engine runs smoothly, continue to monitor its operation for a while.
Important Considerations:
* Professional Help: If you're not comfortable with any of these steps, it's best to seek the help of a qualified mechanic. Attempting to start a long-dormant engine can result in expensive repairs if something goes wrong.
* Safety: Always disconnect the negative battery terminal before working on the engine. Wear safety glasses and gloves.
* Fuel Additives: Adding a fuel system cleaner to the fresh fuel can help clean out any remaining deposits.
This is a general guide. The specific steps might vary slightly depending on your particular Chevy 350 engine and its configuration (carburetor vs. fuel injection, etc.). Always consult a repair manual specific to your year and model for detailed instructions.
