Why 351 windsor motor turns over but start and no spark?

1. Bad Spark Plugs: Inspect the spark plugs for any damage or excessive wear. Replace them if necessary.
2. Faulty Ignition Coil: Check the ignition coil for any damage or corrosion. Replace it if needed.
3. Distributor Cap and Rotor: Inspect the distributor cap and rotor for cracks, carbon deposits, or corrosion. Replace them if any of these issues are present.
4. Spark Plug Wires: Ensure the spark plug wires are correctly connected and in good condition. Replace any damaged or loose wires.

Fuel Issues:

1. Fuel Pressure: Check the fuel pressure to ensure it meets the specifications for the 351 Windsor engine. A fuel pressure gauge can be used to check this.
2. Clogged Fuel Filter: Replace the fuel filter if it is clogged or dirty. A clogged fuel filter can restrict fuel flow and cause the engine not to start.
3. Faulty Fuel Pump: Check the fuel pump for any damage or signs of wear. Replace the fuel pump if necessary.

Other Possible Issues:

1. Mechanical Issues: Ensure the engine is mechanically sound, with no significant internal damage. This may require further inspection by a qualified mechanic.
2. Timing Issues: Check the timing of the engine to ensure it is set correctly. Incorrect timing can cause the engine not to start or run properly.

It is recommended to consult a qualified mechanic or refer to the specific service manual for your 351 Windsor engine to ensure proper troubleshooting and repair.