Spark plugs for Nissan Qashqai J10 2.0: how to choose and replace correctly

Owners Nissan Qashqai J10 with gasoline engine MR20DE 2.0 l sooner or later they face the need to replace spark plugs. This procedure seems simple, but errors in the selection of parts or installation can lead to misfires, increased fuel consumption and even coil damage. In this article we will look at which candles are suitable for Kashkaya J10, how to select them correctly by article number, recognize wear and replace them without consequences.

Feature MR20DE - sensitivity to the quality of candles. A thermal number or clearance mismatch may cause detonation at high speeds or tripling at idle. We analyzed data from service manuals, owner reviews and tests of popular brands to create a checklist of reliable solutions. We'll also tell you why original candles Nissan 22401-JM00B often counterfeited and how to distinguish counterfeit.

Original spark plugs for Qashqai J10 2.0: articles and characteristics

Factory catalog number of spark plugs for Nissan Qashqai J10 with motor MR20DE — 22401-JM00B. These parts are installed on the conveyor and are recommended for scheduled replacement. However, the original candles are produced by the company NGK under the brand Nissan, so they can be replaced with analogues from the same manufacturer.

Main parameters of original candles:

• 🔧 Thread: M12 × 1.25 mm
• 🔥 Thermal number: 6 (average)
• ⚡ Clearance: 1.0–1.1 mm (adjustable)
• 🛠️ Electrode material: nickel (central) + copper (side)
• 📏 Thread length: 26.5 mm

Important: original spark plugs 22401-JM00B often counterfeited. Signs of counterfeit - uneven threads, lack of logo NGK on an insulator and the price is too low (the original costs from 800 rubles per piece). Check the packaging for the presence of a hologram and barcode.

The best analogs of original spark plugs: what to choose instead of 22401-JM00B

If original candles are unavailable or too expensive, certified analogues can be used. The main thing is to comply thermal number 6 And gap 1.0–1.1 mm. Below is a table of tested options:

Brand	Article	Thermal number	Electrode material	Average price (per 1 piece)
NGK	ILZFR6B11	6	Iridium (center) + platinum (side)	1 200 ₽
Denso	IKH16TT	16 (analogue 6)	Iridium	1 100 ₽
Bosch	0 242 235 666	6	Nickel (reinforced)	450 ₽
Beru	Z 322	6	Copper	300 ₽

⚠️ Attention: Candles Denso IKH16TT have a thermal number of 16 according to the standard Denso, which corresponds to 6 according to the standard NGK. Don't confuse notation systems! Also avoid candles with platinum electrodes - they are incompatible with MR20DE and can cause misfires.

To save money you can choose Bosch 0 242 235 666 or Beru Z 322, but their resource is lower - up to 30,000 km versus 60,000 km for iridium analogues. If you plan to drive on gas, it is better to install it immediately NGK ILZFR6B11 - they are resistant to high temperatures.

Signs of spark plug wear: when is it time to change

The manufacturer recommends replacing spark plugs with Nissan Qashqai J10 2.0 every 60,000 km (or 4 years). However, the actual period depends on the quality of the fuel, driving style and operating conditions. Look out for the following symptoms:

• ⚡ Engine tripping — vibrations at idle, especially in the morning.
• 🛢️ Increased fuel consumption — +1–2 liters per 100 km for no apparent reason.
• 🚗 Dips during acceleration — the car “stumbles” when you press the gas.
• 🔥 Black or white soot on the electrodes (visible after unscrewing the spark plug).
• 💡 Check Engine with errors P0300–P0304 (misfire).

🔍 How to check spark plugs yourself? Unscrew one spark plug (for example, from the 4th cylinder) and inspect:

• 🔴 Red plaque - a sign of low-quality fuel with additives.
• ⚫ Oil soot - a signal about problems with valve stem seals.
• ⚪ White coating - mixture is too lean or overheated.

⚠️ Attention: If cracks in the insulator or melted electrodes are found on the spark plugs, this may indicate ignition coil malfunction or detonation. In this case, engine diagnostics is required, and not just replacing spark plugs.

What happens if you don't change spark plugs on time?

Driving for a long time on worn spark plugs leads to:

- Damage to ignition coils (replacement cost - from 15,000 ₽ per set).

- Increased load on the catalyst (risk of its melting).

- Loss of power up to 15–20% due to inefficient fuel combustion.

Step-by-step instructions for replacing spark plugs on a Qashqai J10 2.0

Replacing spark plugs with Nissan Qashqai J10 does not require special skills, but there are nuances. For example, Do not remove spark plugs on a hot engine - this may damage the threads in the block head. It is also important to comply tightening torque (20–25 Nm) to avoid spark plug breakage.

🛠️ Tools and materials:

• 🔧 16 mm spark plug wrench with extension
• 🔩 Torque wrench (optional, but recommended)
• 🧴Dielectric grease (e.g. Liqui Moly Keramik-Spray)
• 🧤 Gloves (so as not to get your hands dirty)
• 📦 Set of new candles (4 pcs.)

🔧 Procedure:

1. Allow the engine to cool (at least 2 hours after driving).
2. Remove the decorative engine cover (unsnap the 4 latches).
3. Disconnect the ignition coil connectors (press the lock and pull up).
4. Unscrew the coil mounting bolts (10 mm wrench) and remove the coils.
5. Clean the wells from dirt (you can use compressed air).
6. Unscrew the old spark plugs with a spark plug wrench.
7. Apply dielectric grease to the threads of the new spark plugs (a thin layer).
8. Screw in new spark plugs by hand all the way, then tighten to a torque of 20–25 Nm.
9. Install the ignition coils in reverse order.

⚠️ Attention: If the spark plug is stuck and won’t come out, don’t use excessive force! Apply a penetrating lubricant (such as WD-40) and wait 10–15 minutes. If the spark plug breaks, the cylinder head will need to be repaired with cutting a new thread.

Common replacement mistakes and how to avoid them

Even experienced car owners sometimes make mistakes that lead to serious damage. Here are the most common of them:

• 🔥 Hot replacement → risk of stripping the threads in the aluminum block head.
• 🔧 Using the wrong key → disruption of the edges on the candle.
• ⚡ Incorrect clearance → misfires (for MR20DE optimally 1.0–1.1 mm).
• 🛠️ Re-upholstery of candles → cracks in the insulator or breakage.
• 🧴 Lack of lubrication on threads → sticking of the spark plug at the next replacement.

🔍 How to check the gap? Take a 1.0 mm thick probe - it should fit between the electrodes with slight resistance. If the gap is larger, carefully bend the side electrode with pliers. Less is not critical, but may worsen sparking.

Another common mistake is mix up ignition coils during reassembly. On Qashqai J10 They are interchangeable, but if you connect the connector to the wrong coil, the engine will trip. Before removing, take a photo of the location of the connectors or mark them.

Gas spark plugs (GBO): what to choose for Qashqai J10

If your Nissan Qashqai J10 equipped with gas-cylinder equipment (GBO), standard spark plugs wear out faster due to the higher temperature of gas combustion. For such cases, candles with:

• 🔥 Cooler thermal number (7 instead of 6).
• ⚡ Reduced clearance (0.8–0.9 mm).
• 🛡️ Reinforced electrodes (iridium or platinum).

The best options for HBO:

• 🔹 NGK IFR6T11 (iridium, gap 0.8 mm)
• 🔹 Denso IW16TT (iridium, thermal number 16)
• 🔹 Bosch WR7DPX (platinum, gap 0.9 mm)

⚠️ Attention: After installing HBO necessarily adjust the ignition! Gas burns slower than gasoline, so the advance angle needs to be increased by 3–5°. This is done through the diagnostic connector using programs Nissan Consult or Launch X431.

Frequently asked questions about spark plugs for Nissan Qashqai J10 2.0

🔧 Which spark plugs are better - iridium or platinum?

For Qashqai J10 2.0 optimal iridium candles (eg NGK ILZFR6B11). They last longer (up to 100,000 km) and perform better at low temperatures. Platinum candles (Bosch WR7DPX) are cheaper, but their service life is up to 60,000 km. If you drive mostly gasoline, choose iridium; Platinum is suitable for HBO.

🛠️ Is it possible to clean the candles and install them back?

Theoretically yes, but not recommended. Even after cleaning with ultra sound or sandblasting, microcracks remain on the electrodes, which impair sparking. It is better to replace the spark plugs with new ones - their cost (from 300 ₽ per piece) is not commensurate with the risk of engine damage.

⚡ Why does the engine stall after replacing spark plugs?

The reasons may be as follows:

• 🔌 Ignition coils are not connected correctly (check the connectors).
• 🔧 Gap mismatch (should be 1.0–1.1 mm).
• 🛢️ Oil or antifreeze gets into the wells (needs to be cleaned).
• 💥 Defective candle (check at a special stand).

First, unscrew the spark plugs and inspect them. If there is carbon deposits or moisture, the problem is not in the candles.

📅 How often should you change spark plugs when driving on gas?

When operating on LPG, spark plugs wear out 30–40% faster. Recommended replacement interval:

• 🔥 Nickel spark plugs: every 20,000–25,000 km.
• ⚡ Iridium/platinum: every 40,000–50,000 km.

Also follow soot color - if it is red or green, this is a sign of corrosion of the electrodes from additives in the gas.

💰 How much does it cost to replace spark plugs in a service?

Cost of work in car services in Moscow and the regions (for 2026):

• 🔧 Self-replacement: 0 ₽ (only the cost of candles).
• 🏠 Garage service: 800–1,200 ₽ (for work).
• 🏢 Official dealer: 2,500–3,500 ₽ (with diagnostics).

If ignition coils need to be replaced, the price will increase to 5,000–8,000 RUR per set (4 pcs.).