1. The Basics (Always start here):
* Battery: Check the battery voltage with a multimeter. It should read around 12.6V or higher when not cranking. A lower voltage indicates a weak or dead battery. Try jump-starting it to rule out the battery completely. If it starts with a jump, the battery needs replacing or charging.
* Battery Cables: Inspect the battery cables for corrosion, looseness, or damage. Clean the terminals with a wire brush and baking soda solution if necessary. Make sure the connections are tight.
* Ignition Switch: Try wiggling the key in the ignition. A faulty ignition switch can prevent the car from starting, even if the battery is good.
2. Fuel System:
* Fuel Pump: Listen carefully near the fuel tank for the whirring sound of the fuel pump when you turn the key to the "on" position (but *not* cranking). You should hear it for a couple of seconds. If you don't, the fuel pump may be faulty or its relay may have failed.
* Fuel Filter: A clogged fuel filter restricts fuel flow and prevents the engine from starting. Consider replacing it if it's old or hasn't been changed recently.
* Fuel Delivery: If the pump is working, check for fuel pressure at the fuel rail (this usually requires a fuel pressure gauge). Low or no pressure indicates a problem with the pump, filter, or fuel lines.
3. Ignition System:
* Distributor: Check the distributor cap, rotor, and ignition wires for cracks, corrosion, or damage. Replace any worn or damaged parts.
* Ignition Coil: A faulty ignition coil can prevent sparks from reaching the plugs. Test the coil with a multimeter or have it tested at an auto parts store.
* Spark Plugs: Check the spark plugs for wear, fouling, or damage. Replace if necessary. While you're at it, inspect the plug wires for cracks or damage as well.
* Crankshaft Position Sensor (CKP Sensor): This sensor tells the engine's computer where the crankshaft is, allowing for proper timing. A faulty CKP sensor will prevent the engine from starting.
* Computer (ECM): A failing ECM is possible but less likely. Diagnosis requires more specialized tools.
4. Starting System:
* Starter Motor: If the engine cranks slowly or not at all, the starter motor may be faulty. You may hear a clicking sound if the starter solenoid is bad. This requires testing or replacement.
5. Other Possibilities:
* Security System (if equipped): If your Corvette has an aftermarket or factory security system, it might be interfering with the starting process.
* Neutral Safety Switch: This switch prevents the car from starting unless the transmission is in park or neutral. Make sure it's in the correct position.
Important Considerations:
* Year-Specific Issues: 1984 Corvettes had their quirks. Researching year-specific problems online might yield helpful information.
* Professional Help: If you're not comfortable working on your car's electrical system or fuel system, take it to a qualified mechanic. Incorrect diagnosis or repair can cause further damage.
* Troubleshooting Resources: Online forums dedicated to Corvettes (like CorvetteForum.com) are excellent resources for troubleshooting specific issues.
Start with the simplest checks (battery, cables, ignition switch) and work your way down the list. Keep track of what you've checked and what you've found, and don't hesitate to seek professional help if you're unsure about any step. Safety first!
