2006 Bombardier DS250 Spark Plug: A Complete Replacement Guide
Solve common starting and running problems on your DS250 with the right spark plug.
- A bad spark plug is a very common cause of starting and running problems on the DS250; it should be the first part you check.
- The OEM-spec plug is an NGK CR8E. Aftermarket equivalents like the Champion RG6YC and Denso U22ESR-N are excellent, cost-effective choices.
- Always check that the spark plug gap is set to 0.8 mm (0.031 inches) before installation.
- Replacement is a very easy DIY task that requires only a few basic tools and can be done in under 15 minutes.
Signs of a Failing Spark Plug on Your DS250
The spark plug is a maintenance item that wears out over time. On the DS250, a bad spark plug is a very common reason for engine problems. Many owners report that replacing the plug is the first and easiest step in troubleshooting. Look for these signs:
- Hard Starting or No Start: This is the most frequent symptom. The engine will turn over, but it won't fire up because the fuel mixture isn't being ignited.
- Engine Misfires: You may feel the ATV sputter or hesitate when you accelerate. This can feel like the engine is hitting a rev limiter at the wrong time.
- Rough Idle: The engine may run unevenly or stall completely when it's supposed to be idling smoothly.
- Reduced Power and Poor Fuel Economy: A weak or inconsistent spark leads to inefficient combustion, making your ATV feel sluggish and use more fuel.
- Backfiring: In some cases, unburnt fuel can ignite in the exhaust, causing a loud popping sound.
No Spark? Check the Plug First
If you have a "no-spark" condition, the spark plug itself is the most likely and cheapest part to replace. Before suspecting more expensive parts like the ignition coil or CDI box, always try a new, correctly gapped spark plug.
Choosing the Right Aftermarket Spark Plug
The original factory spark plug for the 2006 DS250 is an NGK CR8E. This is your baseline for any replacement. Aftermarket brands offer direct replacements that provide excellent performance.
- Standard OEM-Equivalent (Good Choice): This tier includes the standard NGK CR8E, as well as cross-reference plugs from other reputable brands like the Champion RG6YC and Denso U22ESR-N. These plugs use a nickel-alloy electrode and are the most cost-effective choice for stock engines and general trail riding. They offer reliable performance and are more than adequate for the DS250's engine.
- Premium Iridium (Better, but not required): Brands like NGK and Denso also offer iridium versions, such as the NGK CR8EIX. Iridium is a more durable material that lasts longer and maintains a precise spark over its life. While they are a high-quality option, the performance benefits on a stock 250cc engine are minimal. For most riders, the extra cost is not necessary to achieve reliable performance.
Pro-Tip: Stick with Standard Plugs for Best Value
For the 2006 DS250, a standard nickel plug from Champion or Denso provides the best combination of performance and value. An expensive iridium plug is not a required upgrade for this engine to run reliably.
Cost of Replacing a 2006 Bombardier DS250 Spark Plug
Replacing a spark plug is one of the most affordable maintenance tasks you can perform.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Spark Plug | $10.84 - $57.82 |
| Shop Labor | $25 - $75 |
Cost estimates are for the part and labor only and do not include taxes, shop fees, or diagnosis. The wide aftermarket price range reflects the difference between standard nickel and premium iridium plugs.
Frequently Asked Questions (FAQ)
How often should I replace the spark plug on my DS250?
For best performance and to prevent starting issues, it's good practice to replace the spark plug once a year or every 100 hours of riding, whichever comes first. It's an inexpensive part that can save you a lot of frustration on the trail.
What is the correct spark plug gap for the 2006 DS250?
The correct spark plug gap is typically 0.8 mm (0.031 inches). While most plugs come pre-gapped, it is critical to verify the gap with a feeler gauge and adjust it if necessary before installation. An incorrect gap can cause poor performance.
Is an iridium spark plug worth the extra cost for my DS250?
For most owners, a standard nickel plug is sufficient. While iridium plugs last longer, the performance gains on a stock DS250 engine are generally not noticeable. If you want the longest possible service life, iridium is a good choice, but a standard plug offers better value.
What tools do I need to change the spark plug?
The job is very simple and requires only basic tools. You will need a ratchet, a short extension, and a 16mm spark plug socket. A torque wrench is also recommended to ensure you tighten the new plug correctly without damaging the engine's cylinder head threads.
Technical Specifications
OEM Part Numbers: 219703176
OEM Plug: NGK CR8E. Thread Size: M10x1.0. Hex Size: 16mm. Gap: 0.8mm (0.031 in).
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Bombardier DS250: