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My 1991 Chevy truck blew head gasket while driving and got verry hot wont turn over now?

There are a few reasons why your 1991 Chevy truck might not turn over after overheating and blowing the head gasket. Check the following:

1. Battery: Make sure your battery has enough charge to turn the starter. Check the battery terminals for corrosion or looseness.

2. Starter: Check the starter motor. Try tapping the starter gently with a hammer to see if it frees up and starts working again. If it doesn't, you may need to replace the starter.

3. Ignition switch: Check the ignition switch to ensure that it is making proper contact and allowing power to flow to the starter.

4. Fuel: Ensure the fuel tank has enough fuel and check the fuel lines and fuel pump for any blockages or damage that may be preventing the fuel from reaching the engine.

5. Engine damage: Overheating and a blown head gasket can cause severe engine damage. The head gasket is a critical component that prevents coolant from leaking into the cylinders and lubricating oil from leaking into the coolant system. If the head gasket fails, it can cause the engine to lose compression, leading to a no-start condition. You may need a professional mechanic to inspect and repair the engine.