Firing Order for a 2007 Hyundai Tucson 2.7L V6: What You Need to Know

The firing order for a 2007 Hyundai Tucson with the 2.7L V6 engine is 1-2-3-4-5-6. This means the engine’s cylinders fire in simple numerical sequence, but the way those cylinders are physically arranged and how the ignition coils connect to the spark plugs still matters when doing repairs or troubleshooting.

Understanding the 2.7L V6 Engine Layout

The 2.7L V6 used in the 2007 Hyundai Tucson is part of Hyundai’s Delta V6 family. While the firing order itself is straightforward, confusion often arises from cylinder numbering and bank orientation, especially on transverse-mounted engines like those in front-wheel-drive SUVs.

Cylinder Numbering and Bank Identification

On the 2007 Tucson 2.7L V6, the engine is mounted transversely (sideways) in the engine bay. The cylinders are arranged in two banks of three. Knowing which cylinder is which is crucial for routing plug wires, diagnosing misfires, and replacing coils or plugs correctly.

The following list explains how the cylinders are typically numbered on this engine:

• Bank 1 (rear bank, toward the firewall): Cylinders 1, 3, and 5
• Bank 2 (front bank, toward the radiator): Cylinders 2, 4, and 6
• Cylinder #1: Rear bank, typically on the passenger side (U.S.-spec, left-hand-drive vehicles)
• Numbering pattern on rear bank (firewall side): 1 – 3 – 5
• Numbering pattern on front bank (radiator side): 2 – 4 – 6

By understanding which bank is which and how the cylinders are numbered, technicians can match the correct coil or wire to each plug and avoid cross-firing or misrouting connections.

Firing Order: 1-2-3-4-5-6 Explained

Although many V6 engines use a more complex firing order to balance vibrations, Hyundai’s 2.7L V6 uses a logically progressive sequence: 1-2-3-4-5-6. This does not mean the cylinders fire sequentially around the physical “V,” but rather that the ignition events are timed in that numeric pattern according to their position in the crankshaft’s rotation.

The following list breaks down what the 1-2-3-4-5-6 firing order represents in practice:

1. 1: Ignition event at cylinder #1 (rear bank, starting reference point)
2. 2: Ignition event at cylinder #2 (front bank)
3. 3: Ignition event at cylinder #3 (rear bank)
4. 4: Ignition event at cylinder #4 (front bank)
5. 5: Ignition event at cylinder #5 (rear bank)
6. 6: Ignition event at cylinder #6 (front bank)

This sequence, managed by the engine control module, ensures smooth operation when combined with the crankshaft’s design and the 60‑degree V6 layout, even though the numeric order looks deceptively simple.

Ignition System and Coil Connections

The Tucson’s 2.7L V6 uses a coil-pack or coil-on-plug–style electronic ignition system (depending on market and exact configuration), controlled by the engine computer. While you do not “set” the firing order manually—because it is programmed—the physical routing of any plug wires or correct placement of coils is still critical.

Why Firing Order and Cylinder Numbering Matter in Repairs

For owners and technicians working on spark plugs, coils, or diagnosing misfires, understanding firing order and cylinder labeling avoids common and costly mistakes. Even with an electronically managed ignition system, incorrect wiring can cause hard starting, rough running, or a no-start condition.

The following list outlines key situations where knowing the firing order and cylinder numbers is important:

• Replacing spark plugs: Ensures you remove and reinstall components on the correct cylinder, especially with limited access to the rear bank.
• Swapping ignition coils: Helps when diagnosing a misfire by moving a coil from one cylinder to another and checking if the fault follows.
• Reading diagnostic codes: Trouble codes like P0301, P0302, etc., point to misfires in specific cylinders; you must know which cylinder is which.
• Checking wiring harnesses: Prevents crossing connectors or wires when components are disconnected for other engine work.
• Engine rebuilds or head work: Ensures correct reference when setting timing components or verifying top dead center on cylinder #1.

Armed with a clear understanding of how the cylinders are numbered and how they fire, both professionals and skilled DIYers can service the ignition system with confidence and reduce the risk of misdiagnosis.

Common Misconceptions and Practical Tips

The straightforward 1-2-3-4-5-6 firing order can sometimes lead to assumptions that the cylinders are lined up in a simple front-to-back or side-to-side sequence, which is not the case on a V6. Misunderstandings usually stem from the transverse engine position and limited visibility of the rear bank.

How to Avoid Mistakes When Working on the 2.7L V6

Practical strategies can help avoid confusion when tackling routine maintenance or troubleshooting on this engine, particularly for those unfamiliar with Hyundai’s V6 layout.

The following list offers practical steps to reduce errors during ignition-related work:

• Label before removal: Use tape or tags to mark coils or wires by cylinder number before disconnecting them.
• Consult a diagram: Refer to a factory service manual or trusted repair database for a visual layout of banks and cylinders.
• Confirm bank orientation: Verify which side is Bank 1 (firewall side) and which is Bank 2 (radiator side) before interpreting OBD-II misfire codes.
• Use the code-to-cylinder map: Match DTCs (e.g., P0303) to the correct physical cylinder using the 1,3,5 (rear) and 2,4,6 (front) pattern.
• Double-check reassembly: After maintenance, visually confirm each coil or wire path matches your labels and reference materials.

By following these steps and keeping the firing order and cylinder layout in mind, you can minimize misfires caused by human error and ensure the Tucson’s V6 runs as intended after any repair work.

Summary

The 2007 Hyundai Tucson 2.7L V6 uses a firing order of 1-2-3-4-5-6, with cylinders arranged as 1-3-5 on the rear bank (toward the firewall) and 2-4-6 on the front bank (toward the radiator). While the engine control module governs ignition timing electronically, accurate knowledge of firing order and cylinder numbering is essential for correctly replacing plugs and coils, interpreting misfire codes, and performing ignition-system diagnostics. Understanding this layout helps ensure smooth operation and prevents avoidable errors during maintenance or repair.

How are Hyundai cylinders numbered?

Order guys on that hyundai sonata. So for instance you need to replace ignition curve on cinder. Number. Two it means that it’s this ignition. Curve. If you have code for engine misfire.

What engine has the firing order 1 8 4 3 6 5 7 2?

Mopar V8 engines, from the Small Block Mopar (SBM) to the Big Block Mopar (BBM) and HEMI families, adhere to the 1-8-4-3-6-5-7-2 firing order. However, distributor rotation can vary: Small Block Mopar Distributor Rotation: Clockwise. Big Block Mopar Distributor Rotation: Counterclockwise.

How are cylinders numbered on a V6 engine?

Then the front would be towards. You but numbering these cylinders is important we’ve got one two three in the back. Then four five six in the front. That’s all there is to it thanks for watching.

Which one is cylinder 4?

Looking at the car, cylinder 4 is the furthest right, towards the driver side (US), near the shifter cables, airbox, etc.