What is the spark plug gap for a Dodge Neon?
Typically 0.040 inches (1.0 mm) for most Dodge Neon engines.
However, Neon engines vary by year and variant, and plug types can influence the exact gap. Always verify the specification for your specific model in the owner's manual or the spark plug manufacturer’s data before setting or re-gapting plugs.
Understanding Neon Spark Plug Gap
The spark plug gap is the distance between the center and ground electrodes. Setting the correct gap ensures reliable ignition, optimal fuel economy, and smooth engine performance. For the Dodge Neon, the most common factory recommendations target a small, standard gap of 0.040 inches (1.0 mm), but exact numbers can differ based on engine variant and plug type.
Engine Variants and Gap Standards
Here is how the typical Neon engine lineup aligns with the common 0.040-inch gap. If you are using plugs that come pre-gapped to a different value, you can adjust carefully to the target specification using a proper gap tool.
- 2.0L SOHC engines: 0.040 in (1.0 mm)
- 2.0L DOHC engines: 0.040 in (1.0 mm)
- 2.4L DOHC engines (Neon variants like SRT/High-Output models): 0.040 in (1.0 mm)
While 0.040 in (1.0 mm) is a standard target for these engines, always confirm the exact gap for your year, trim, and spark plug type. Different OEM specifications or aftermarket plugs may specify a slightly different gap, so consult the service manual or plug packaging if in doubt.
How to check and set the gap
Follow these steps to ensure your spark plugs are correctly gapped and ready for installation:
- Identify the correct spark plug type for your Neon (brand and heat range as specified by the manufacturer).
- Remove the spark plug and inspect it for wear or damage; replace if necessary.
- Use a spark plug gap tool to measure the gap. If the gap is not 0.040 inches (1.0 mm), carefully adjust by bending the side electrode until the correct dimension is reached.
- Check the gap again after any adjustment to confirm accuracy.
- Install the plugs and torque to the manufacturer’s recommended specification for your engine. Follow the torque guidelines exactly to avoid damage to the cylinder head or threads.
- Reconnect leads or coils and perform a final engine check to ensure proper firing and idle.
Tip: Do not force or hammer the electrode to close the gap, and avoid bending the center electrode excessively, which can cause misfires or plug failure. When in doubt, consult a professional or refer to the official service manual for your specific Neon model.
Additional considerations
Plug gap is just one aspect of reliable ignition. Consider these related factors when servicing spark plugs in a Dodge Neon:
- Use plugs recommended for your engine and climate conditions.
- Inspect ignition coils or distributor components for wear if misfires are suspected.
- Follow appropriate maintenance intervals for spark plug replacement per your vehicle’s manual.
If you’re unsure about your model year or the exact gap specification, contact a dealership or a qualified automotive technician. Correctly gapped plugs are crucial for engine efficiency, starting reliability, and fuel economy.
Summary
For most Dodge Neon models, a spark plug gap of 0.040 inches (1.0 mm) is the standard target across 2.0L and 2.4L engines. Always verify the precise specification for your year and plug type, and use a proper gap tool to set thegap accurately before installation. Following the correct procedure helps ensure smooth starts, steady idle, and optimal performance.
What's the spark plug gap on a 4.6 Ford engine?
0.054"
What is the spark plug gap for a 3.8 L V6?
Set 6 U-Groove Design Spark Plugs Gap 0.060 For 3.0L 3.2L 3.8L 4.1L V6 L6.
What is the spark plug gap for a 3.7 V6?
Engine Specifications - 3.7L
| Measurement | Specification |
|---|---|
| Firing order. | 1-4-2-5-3-6 |
| Ignition system. | Coil on plug |
| Spark plug gap. | 0.049 - 0.053 in (1.25 - 1.35 mm) |
| Compression ratio. | 10.5:1 |
What is the recommended spark plug gap?
Close and Wide Spark Plug Gaps: Pros and Cons
Naturally aspirated combinations tend to perform better with a hotter plug that's gapped from 0.030 to 0.035-inch. Conversely, forced-induction and nitrous-assisted mills are happier with cold spark plugs gapped at 0.020 to 0.025-inch.
