Replacing spark plugs on a Nissan Note 1.4: a complete guide with photos and videos

Replacing spark plugs with Nissan Note 1.4 (models K13 And K14 with engine HR14DE) is a procedure that many car owners prefer to do on their own. And for good reason: with the right approach, it takes no more than an hour, saving up to 3-5 thousand rubles at a service station. However, there are nuances that are often silent about in standard instructions - from the choice of original spark plugs to the subtleties of dismantling the ignition coils on this engine.

In this article you will find not only a step-by-step algorithm with photos, but also real data on spark plug life (spoiler: on Note 1.4 they rarely last the stated 30 thousand km), unique error codesthat appear if installed incorrectly, as well as a comparative table of analogues from NGK, Denso And Bosch. We will pay special attention to the problem of “triple” after replacement - every fifth owner faces it Note.

When to change spark plugs on a Nissan Note 1.4: signs and regulations

Official regulations Nissan requires replacement of spark plugs every 30,000 km for engine HR14DE. However, in practice this interval is often adjusted depending on operating conditions. For example, when driving on gas or frequent short trips (when the engine does not warm up completely), the spark plugs wear out 20-25% faster.

The main symptoms indicating the need for replacement:

• 🔥 Engine tripping at idle or during acceleration (especially noticeable during a cold start).
• ⚡ Misfires, recorded by on-board diagnostics (codes P0300-P0304).
• 🛢️ Increased fuel consumption (more than 7.5 l/100 km in the combined cycle for Note 1.4).
• 🚗 Declining dynamics: The car stalls when overtaking or going uphill.
• 🔧 Visual defects on the electrodes (carbon deposits, erosion, oil).

Interesting fact: on Nissan Note 1.4 With a mileage of over 100 thousand km, a problem is often encountered when the spark plugs “stick” to the block head. This is due to aluminum cylinder head, which deforms over time. In such cases, unscrewing the spark plugs "hot" can lead to thread failure - we will talk about this in detail in the section on dismantling.

Which candles to choose: original vs analogues

Original candles for Nissan Note 1.4 (HR14DE) have an article number 22401-JM01B (manufacturer - NGK). However, their price (from 800 rubles per piece) scares off many. Fortunately, there are proven analogues that are not inferior in quality, and sometimes even superior to the original.

Brand	Article	Type	Gap (mm)	Average price (per piece)	Features
NGK	IFR6T11	Iridium	0.8-0.9	750-900 ₽	Original, resource up to 40 thousand km
Denso	IKH16TT	Iridium	0.8	600-750 ₽	The best analogue, softer than the original
Bosch	0242235666	Platinum	0.9	500-650 ₽	Budget option, but less resource
Brisk	DR15YC-1	Nickel	0.8	200-300 ₽	For temporary replacement

Important point: on Note 1.4 not recommended install spark plugs with copper electrodes (for example, Champion RN9YC). They wear out quickly due to the high temperature in the combustion chamber of this engine. Also avoid spark plugs with a gap of more than 0.9 mm - this can lead to misfires at high speeds.

⚠️ Attention: If you do not buy candles from an authorized dealer, be sure to check their authenticity. Fakes NGK IFR6T11 often have duller body colors and uneven carvings. The original must have a laser engraved logo on the insulator.

How to distinguish a fake NGK from the original?

1. On the original the logo is applied with a laser, on the fake it is applied with paint.

2. The original packaging has a hologram with a changing pattern.

3. On fakes there is often no marking on the side electrode.

4. The weight of the original candle is 42-45 grams, fakes are 5-10% lighter.

Tools and preparation for replacement

To replace spark plugs yourself Nissan Note 1.4 you will need:

• 🔧 Candle key 14 mm with a magnetic tip (preferably with a flexible extension).
• 🔩 Socket wrench 10 mm for unscrewing the ignition coils.
• 🛠️ Torque wrench (optional, but highly recommended for proper tightening).
• 🧴 Penetrating lubricant (For example, WD-40 or Liqui Moly MoS2) for stuck candles.
• 🧤 Dielectric grease for processing coil tips.
• 📏 Dipstick to check the gap (if you are not using new spark plugs).

Before starting work necessarily follow these steps:

Disconnect the negative terminal of the battery (to avoid short circuit).

Allow the engine to cool to below 40°C (a hot cylinder head increases the risk of stripped threads).

Clean the area around the spark plug wells with compressed air (dust should not get into the cylinders).

Prepare new spark plugs: check the gap and apply a thin layer of graphite lubricant to the threads (but not to the electrode!).-->

Feature Nissan Note 1.4: The ignition coils here are secured with bolts, and not with latches, as on many other cars. This complicates dismantling, but reduces the risk of damage to the connectors. When unscrewing the coil bolts, be careful - they often stick, and excessive force can strip the threads in the cylinder head.

Step-by-step instructions for replacing spark plugs

The process of replacing spark plugs Nissan Note 1.4 consists of several key stages. Follow the instructions carefully - especially when it comes to tightening new spark plugs.

Step 1. Removing the ignition coils

1. Remove the plastic decorative engine cover (it is secured with 4 clips).
2. Disconnect the connectors from the ignition coils. To do this, press the latch and pull it up.
3. Unscrew the coil mounting bolts with a 10 mm socket wrench.
4. Carefully remove the coils by rocking them from side to side (do not pull on the wires!).

Step 2. Unscrewing old spark plugs

The main thing here is not to rush. If the spark plugs haven't been changed for a long time, they could get stuck. In this case:

1. Apply penetrating lubricant to the threads and wait 5-10 minutes.
2. Put on the spark plug wrench and try to turn the spark plug. counterclockwise.
3. If the candle does not budge, do not use excessive force. Try tightening it slightly (clockwise) and then loosening it again.
4. After unscrewing, inspect the spark plug: black carbon indicates a rich mixture, white carbon indicates a poor mixture, oil on the threads indicates problems with the valve stem seals.

Step 3. Installing new spark plugs

This is the most critical stage. Errors here lead to thread failure in the cylinder head (and this is a repair from 20 thousand rubles). Follow the rules:

• 🔩 Light a candle by hand all the way, without distortion.
• 🔧 Tighten with a torque wrench 20-25 Nm (for NGK IFR6T11).
• 🚫 Never Do not use an impact wrench - this is guaranteed to strip the threads.
• 🔄 Install the ignition coils strictly in the same wells from which they were removed (they are adjusted according to resistance).

After installing all the spark plugs, connect the coil connectors and start the engine. For the first 10-15 seconds it may work unstably - this is normal (the ECU adapts to the new spark plugs). If operation has not returned to normal after a minute, check:

• Correct connection of coil connectors.
• No cracks on spark plug insulators.
• The tightness of the coils to the cylinder head (a click should be heard).

Common mistakes and how to avoid them

Even experienced car owners sometimes make mistakes when replacing spark plugs. Nissan Note 1.4. Here are the most common ones and ways to prevent them:

⚠️ Attention: If you hear a crunch or feel a “failure” when unscrewing the spark plug, stop working immediately. This is a sign of a broken thread in the cylinder head. In this case, further actions should only be carried out by a service center using a threaded repair insert.

Error 1: Re-stretching spark plugs

On an aluminum cylinder head Note 1.4 Torque is critical. An excess of even 5 Nm can lead to:

• 🔧 Thread deformation and subsequent “shot” of the candle under pressure.
• 🔥 I will overheat the candles due to a violation of the heat dissipation.
• 💥 Cracks in the insulator (manifests as “shooting” in the muffler).

Solution: Always use a torque wrench. If it is not there, tighten the spark plugs by hand until they stop, and then tighten them 1/8 turn (for new spark plugs).

Error 2: Debris getting into the cylinders

Dust or sand that gets into the spark plug well acts as an abrasive when starting the engine, scratching the cylinder walls and pistons. On Note 1.4 this is especially dangerous due to the small working volume (1.4 l) - even small particles can cause scuffing.

Solution: before removing the spark plugs, blow out the wells with compressed air (you can use a compressor or a can to clean the electronics). If debris does get in, do not start the engine - remove it with tweezers or a vacuum cleaner.

Mistake 3: Using the wrong candles

Installing spark plugs with the wrong heat rating or electrode material leads to:

• 🔥 Overheating (if the heat number is too low).
• ❄️ Oiling (if the heat number is too high).
• ⚡ Breakouts insulator (for cheap candles with thin ceramics).

Solution: use only candles from our table of analogues. For Note 1.4 with HBO are optimal Denso IKH16TT — they better tolerate the high temperature of gas combustion.

What to do if after replacing spark plugs the engine stalls

"Trippling" after replacing spark plugs with Nissan Note 1.4 - a common problem faced by about 20% of owners. The reasons may vary, but the most common culprits are:

1. Incorrect clearance between the electrodes (must be 0.8-0.9 mm).
2. Confused ignition coils (they must be in strict order).
3. Damaged connectors coils (often break due to careless removal).
4. Marriage of new candles (especially with cheap analogues).
5. Oil getting into wells (for example, due to a worn valve cover gasket).

Diagnostic algorithm:

1. Check error codes scanner (for example, ELM327). Codes P0301-P0304 will indicate the problem cylinder.
2. Swap the coils between the "triple" and the normal cylinder. If the tripping continues, the coil is to blame.
3. Unscrew the spark plug from the problem cylinder and inspect it. Black carbon deposits or a wet electrode are a sign of a malfunction.
4. Check compression in cylinders. If it is below 10 bar, the problem is not in the spark plugs, but in the engine (wear of rings, valves).

If tripling appears immediately after replacement, in 80% of cases the spark plugs themselves are to blame. Try returning the old ones - if the engine runs smoothly, it means the new spark plugs are defective. This is especially true for Bosch And Brisk, where the percentage of defects is higher than that NGK or Denso.

How much does it cost to replace spark plugs at a service center vs on your own?

Cost of replacing spark plugs Nissan Note 1.4 in services in Moscow and the regions varies depending on the level of the service station and the spare parts used. Here are the current prices for 2026:

Service type	Cost of work (for 4 candles)	Cost of candles (set)	Total	Opening hours
Official dealer Nissan	2 500 — 3 500 ₽	3,200 - 4,000 ₽ (original)	5 700 — 7 500 ₽	1.5-2 hours
Independent service (with guarantee)	1 200 — 2 000 ₽	1,800 - 3,000 ₽ (analogues)	3 000 — 5 000 ₽	1 hour
Garage foreman	800 — 1 500 ₽	1 500 — 2 500 ₽	2 300 — 4 000 ₽	40-60 min
On your own	0 ₽	1 500 — 3 000 ₽	1 500 — 3 000 ₽	1-1.5 hours

The savings when replacing yourself are obvious - up to 50-70%. However, consider hidden costs:

• 🔧 Purchase of a tool (spark wrench, torque wrench) - from 1,500 ₽.
• ⏱️ Time (if you have never done this before, you can spend 2-3 hours).
• 🚗 Risk of error (thread failure, damage to coils) - potential expenses from 5,000 ₽.

Conclusion: if you have experience in car repair and the necessary tools, independent replacement is justified. If not, it’s better to contact a trusted service that guarantees the work. This is especially true for Note 1.4 with a mileage of 100 thousand km, where there is a high probability of spark plugs sticking.

FAQ: Frequently asked questions about replacing spark plugs on Nissan Note 1.4

Is it possible to use spark plugs with copper electrodes instead of iridium ones?

Technically yes, but not recommended. Copper candles (eg Champion RN9YC) have a resource 2-3 times less than iridium ones (only 10-15 thousand km). In addition, they perform worse at high temperatures, which can lead to detonation in the cylinders Note 1.4. If you still decide to install copper ones, choose one with a heat rating of 6-7 and a gap of 0.8 mm.

What happens if you don’t change spark plugs for more than 50 thousand km?

The consequences depend on the condition of the candles:

• 🔥 Carbon deposits on the electrodes → misfires, tripping, error codes P0300-P0304.
• ⚡ Electrode wear → increased clearance, difficulty with cold start.
• 💥 Destruction of the insulator → breakdown to ground, cylinder failure.
• 🛢️ Oil getting into wells → oiling of spark plugs, loss of spark.

In practice, after 50 thousand km Note 1.4 Vibration often appears at idle and fuel consumption increases by 10-15%. In advanced cases, it may be necessary to replace the ignition coils (from RUB 2,000 per piece).

Do I need to lubricate the spark plug threads before installation?

Yes, but only graphite lubricant or special paste for candles (for example, Liqui Moly Keramik-Paste). These are:

• 🔧 Prevents spark plugs from sticking to the cylinder head.
• 🔥 Improves heat dissipation (lubricant fills micro-gaps).
• 🛠️ Makes future replacement easier.

Do not use under any circumstances WD-40, Litol or other universal lubricants - they can cause the spark plug to boil in the well. Apply lubricant thin layer, only on the thread, avoiding contact with the electrodes.

What should the spark plug gap be for Nissan Note 1.4?

Optimal engine clearance HR14DE:

• 0.8-0.9 mm - for AI-92/95 gasoline.
• 0.7-0.8 mm - if the car runs on gas (LPG).

A gap of more than 1.0 mm can lead to misfires at high speeds, less than 0.7 mm can lead to flooding of the spark plugs during a cold start. Check the gap flat probe, and not round (more precisely).

Is it possible to change spark plugs one at a time and not as a set?

Technically possible, but not recommended. Here's why:

• 🔥 Different wear of spark plugs leads to uneven operation of the cylinders.
• ⚡ Different resistance can cause overload of the ignition coils.
• 📉 The overall resource is reduced: new spark plugs will wear out faster due to increased load.

Exception: if one candle fails ahead of time (for example, due to a defect), and the rest are in good condition. In this case, you can only replace it, but it is better to use a spark plug of the same model and with the same mileage as the others.