2013 Kia Soul Firing Order: 1-3-4-2 Deep Dive (Diagrams + Live Animation)
🔧 Types of Firing Orders Across Engines
Different engine configurations use unique firing patterns:
- Inline-4 (most common): 1-3-4-2 (Kia Soul, Toyota, Honda) or 1-2-4-3 (older Ford).
- Inline-6: 1-5-3-6-2-4 (BMW, Jeep).
- V6: 1-2-3-4-5-6 or 1-4-2-5-3-6 (GM, Ford).
- V8 (crossplane): 1-8-4-3-6-5-7-2 (typical Chevrolet).
For the Soul, the 1-3-4-2 order is specifically chosen to complement the firing interval and crankpin offset to produce smooth idle at 750 rpm.
🎯 Cylinder Numbering & Firing Diagram (2013 Kia Soul)
Cylinder #1 is located at the front of engine (crankshaft pulley/belt side). Cylinders are arranged in a straight line: 1 → 2 → 3 → 4 towards the firewall. The firing sequence moves from #1 to #3, then #4, and finally #2. Below is a static SVG representation:
⚡ Interactive Firing Animation (1-3-4-2)
Watch the cylinders fire in real-time precisely as the 2013 Kia Soul ECU commands – cylinder highlights indicate the active ignition stroke.
⚡ Awaiting sequence…
💡 How to use: The animation runs automatically. It demonstrates the precise firing sequence at a reduced speed for learning.
🛠️ How to Check & Verify Firing Order on 2013 Kia Soul (Step-by-Step)
Method 1 – Visual & Manual Verification: Remove all 4 spark plugs. Turn the engine manually (with a wrench on crankshaft bolt) and feel for compression strokes. The correct order will produce compression in cylinder order 1 → 3 → 4 → 2.
Method 2 – OBD2 Scanner: Use a scan tool to monitor misfire counters (Mode $06). If cylinder 3 misfires while others OK, firing order is not the issue; but if multiple cylinders misfire in pattern, cross-check coil wiring.
Method 3 – Ignition Scope: A lab scope can capture primary ignition waveforms and confirm firing sequence by comparing spark events on each cylinder relative to crankshaft position sensor signal.
❗ Is It Safe to Change Firing Order?
Is it safe? Absolutely NOT. The firing order is physically determined by the crankshaft’s design. Changing it would require machining a new crank, remapping the ECU, and redesigning camshafts. Even attempting to swap spark plug wires on a distributor-based engine would cause catastrophic backfires. On a 2013 Kia Soul, the ECU will not allow firing order changes – any modification will result in immediate engine stall, violent shaking, and potential internal damage. Always stick to factory 1-3-4-2.
✅ Advantages of Correct Firing Order (1-3-4-2)
- Smooth engine operation: Even firing spacing cancels primary couple vibrations.
- Higher torque at low RPM: Optimized intake manifold tuning based on the firing sequence.
- Lower exhaust pulsation: Reduces interference between cylinders, improving scavenging.
- Longer engine life: Minimized torsional stresses on crankshaft and bearings.
- Better fuel economy & lower emissions: Complete combustion with proper timing.
❌ Disadvantages / Risks of Incorrect Firing Order
- Rough idle & misfires (P0300-P0304): Engine shakes aggressively.
- Backfiring through intake or exhaust: Can damage MAF sensor and throttle body.
- Catalytic converter overheating: Unburnt fuel destroys converter quickly ($1k+ repair).
- Potential valve/piston damage: If firing occurs at wrong crank angle.
🔍 Relationship to Ignition Timing & Performance
Firing order differs from ignition timing. While firing order is the sequence, ignition timing is the when (crankshaft angle) the spark occurs. For the 2013 Kia Soul, base ignition timing is controlled by the ECU based on engine load, RPM, and knock sensors. However, if the firing order is incorrect, even perfect ignition timing cannot fix the engine behavior – torque pulses become erratic, and the engine loses synchronization. Always confirm firing order before adjusting timing related components.
📊 2013 Kia Soul Engine Specifications Table
| Engine Option | Displacement | Cylinders | Firing Order | Compression Ratio |
|---|---|---|---|---|
| 1.6L Gamma G4FG | 1591 cc | Inline-4 | 1-3-4-2 | 10.5:1 |
| 2.0L Nu G4KD | 1999 cc | Inline-4 | 1-3-4-2 | 10.3:1 |
Common Misfire Diagnosis Related to Firing Order
If your 2013 Kia Soul shows a P0303 (cylinder 3 misfire), the firing order can help you understand which cylinder fails in sequence. But more often, misfires are due to bad spark plugs, ignition coils, or fuel injectors. However, if the firing order is altered (e.g., after engine repair where coil connectors were swapped), you may see multiple random misfire codes (P0300) plus severe running issues. Always double-check coil harness order: cylinder 1 coil gets signal from ECU pin corresponding to #1 cylinder, etc.
