Where is the number 4 cylinder on a Ford E350 Econoline V8 and how do you change coil cylinder?

On a Ford E350 Econoline with a V8 engine, the cylinders are numbered sequentially from the front of the engine, starting on the passenger side (right side when facing the engine). Therefore, cylinder #4 is located in the back (closest to the firewall) of the engine on the passenger side.

Changing a coil pack (not a "cylinder") on a Ford E350 V8 involves these general steps. However, the exact location and process *will vary slightly depending on the year and specific engine (e.g., 4.6L, 5.4L, 6.8L V8). Always consult your vehicle's repair manual for precise instructions and diagrams.

General Steps to Replace a Coil Pack:

1. Safety First: Disconnect the negative terminal of your battery. This prevents accidental shorts and injury.

2. Locate the Faulty Coil Pack: Identify the coil pack for cylinder #4 (on the passenger side, towards the rear). They are usually mounted individually on top of the spark plugs.

3. Disconnect the Coil Pack: Unplug the electrical connector from the coil pack. It should simply pull off.

4. Remove the Coil Pack: Most coil packs are held in place by a bolt or clip. You may need a wrench or screwdriver to remove it.

5. Install the New Coil Pack: Carefully install the new coil pack, ensuring it is seated correctly. If there was a clip or bolt, replace it securely.

6. Reconnect the Coil Pack: Plug the electrical connector back into the new coil pack.

7. Reconnect the Battery: Reconnect the negative battery terminal.

8. Test: Start the engine and check for any issues.

Important Considerations:

* Repair Manual: A repair manual specific to your year and engine is highly recommended. This will show you precisely where your coil packs are located, what tools you'll need, and the proper procedure.

* Tools: You'll likely need a socket wrench, possibly a screwdriver, and possibly a spark plug socket (if you need to inspect the spark plug itself).

* Spark Plug Condition: While you're there, consider inspecting the spark plug for cylinder #4. If it's worn, damaged, or fouled, you should replace it as well. Otherwise, a new coil pack might not fix the underlying problem.

Disclaimer: This information is for general guidance only. Improperly performing repairs can damage your vehicle or cause injury. If you're not comfortable working on your vehicle, it's best to take it to a qualified mechanic.