Replacing spark plugs on Nissan Qashqai J11 (2014–2021): instructions with photos and videos

Replacing spark plugs with Nissan Qashqai J11 - a procedure that many owners put off until the last minute. But in vain! Worn spark plugs not only impair performance and increase fuel consumption, but can also lead to serious engine problems. In this article we will look at how to correctly change spark plugs Qashqai J11 (restyling and pre-restyling) with engines 1.2 DIG-T, 1.6 And 2.0, what tools will be needed, and what to pay attention to so as not to damage the car.

According to the regulations Nissan, candles on Qashqai J11 need to be changed every 30,000–40,000 km (for iridium - up to 100,000 km). But the actual period depends on the quality of the fuel, driving style and operating conditions. If you notice engine tripping, failures during acceleration or increased gasoline consumption - these are sure signs that it’s time to check the spark plugs. Don't wait for the hairstyle to light up Check Engine!

In the article you will find:

• 🔧 Step by step instructions with photos and videos (including nuances for different engines).
• 🔍 Which candles to choose — original vs analogues, pros and cons of iridium spark plugs.
• ⚠️ Common mistakesmistakes that beginners make (and how to avoid them).
• 💰 Cost of work in service vs independent replacement.

Which spark plugs are suitable for Nissan Qashqai J11?

The choice of spark plugs depends on the type of engine you have. Qashqai J11. The manufacturer recommends original parts, but there are also worthy analogues. The main thing is to comply heat number and electrode material.

For motors Qashqai J11 The following items are relevant:

Engine	Original spark plugs (Nissan)	Analogues (recommended)	Gap, mm
1.2 DIG-T (HR12DDT)	22401-JM01B (Denso)	NGK 97226, Bosch 0242235666	0.8–0.9
1.6 (HR16DE)	22401-4M515 (NGK)	Denso K20TT, Beru Z323	1.0–1.1
2.0 (MR20DD)	22401-4M500 (NGK)	Denso FK20HBR11, Bosch 0242235537	1.0–1.1

For Qashqai J11 with turbo engine 1.2 DIG-T better use iridium spark plugs - they last longer and withstand high temperatures better. On naturally aspirated engines (1.6 And 2.0) you can also use regular nickel ones, but they have a shorter lifespan.

⚠️ Attention! If you decide to save money and buy candles from Aliexpress, be prepared for the fact that they may not meet the stated parameters. Especially often counterfeited NGK And Denso. Check the packaging for holograms and barcodes!

Also note gap between electrodes. For Qashqai J11 it must be within 0.8–1.1 mm. If the gap is larger, the engine will run unstably; if it is smaller, the spark plugs will quickly become covered with soot.

When to change spark plugs on Nissan Qashqai J11?

The manufacturer indicates in the manual the interval for replacing spark plugs for Qashqai J11 — every 30,000 km for ordinary and 100,000 km for iridium. But in Russian realities these figures are often overestimated. Here are the signs that it's time to change the spark plugs regardless of mileage:

• 🚗 Engine troubles (especially at idle).
• ⚡ Dips during acceleration or loss of power.
• 💨 Increased fuel consumption (10–15% higher than usual).
• 🔥 Difficult start (especially in cold weather).
• 🛑 Check Engine light came on (error code P0300 — misfires).

If you notice any of these symptoms, do not delay diagnosis. Candles are inexpensive (from 300 to 1,500 rub. per set), and the consequences of their wear and tear can cost many times more. For example, faulty spark plugs can lead to engine detonation, and this is already overhaul.

It is also worth checking the spark plugs when every maintenance (once every 15,000 km). Even if they look fine, clean them of carbon deposits and check the gap. On Qashqai J11 with gas-cylinder equipment (GBO), spark plugs wear out faster - they need to be changed every 20,000 km.

Preparing for replacement: tools and safety precautions

Before you start replacing the spark plugs Nissan Qashqai J11, prepare everything you need. You will need:

• 🔧 Candle key by 16 mm (preferably with a magnetic insert or rubber seal).
• 🔩 Socket wrench or a 10 mm socket (for removing ignition coils).
• 🔧 Extension cord for the key (on some engines the spark plugs are recessed deeply).
• 🧲 Torque wrench (optional, but recommended for precise tightening).
• 🧴 Dielectric grease (for processing coil tips).
• 🧹 Compressor or can of compressed air (for cleaning wells from dust).
• 🔦 Flashlight (lighting in the engine compartment Qashqai J11 leaves much to be desired).

Also don't forget:

1. Cool the engine (working on a hot engine is dangerous - you can get burned and strip the threads).
2. Disconnect the negative terminal of the battery (to avoid short circuit).
3. Clear the area around the spark plug wells from dirt (so that debris does not get into the cylinders).

⚠️ Attention! On Qashqai J11 with motor 1.2 DIG-T The spark plugs are located in an awkward place - you will have to remove the intake manifold. If you do not have experience, it is better to entrust this work to a service.

If you have never changed spark plugs yourself, watch the video instructions for your engine. For example, for 2.0 MR20DD the process is simpler than for 1.2 DIG-T. Also note that on some modifications Qashqai J11 can stand custom ignition coils (one per candle), and on the others - common module.

Step-by-step instructions for replacing spark plugs on a Nissan Qashqai J11

The process of replacing spark plugs Qashqai J11 depends on the engine type. Below is a universal instruction, but for 1.2 DIG-T there are some nuances (see spoiler below).

1. Removing the ignition coils

On most engines Qashqai J11 (except 1.2 DIG-T) the ignition coils are secured with 10 mm bolts. Carefully disconnect the power connector, then unscrew the bolt and remove the coil. Don't pull the wires! - contacts can be damaged.

If the coil gets stuck, do not use force. Water it WD-40 or similar liquid and wait 5–10 minutes. You can also carefully pry the coil with a plastic spatula.

2. Removing old spark plugs

Insert the spark plug wrench into the well and carefully unscrew the spark plug counterclockwise. If the spark plug does not budge, do not apply excessive force - you may break the insulator. Try screwing it back a little and unscrewing it again.

After removal, inspect the spark plug:

• 🔥 Normal Wear — light brown soot, electrodes intact.
• ⚠️ Oil coating - a sign of problems with the valve stem seals.
• 💥 Melted electrodes - overheating, detonation is possible.
• ⚪ White soot - the mixture is too lean or the fuel is of poor quality.

3. Installing new spark plugs

Before installation, check the gap on new spark plugs (should be 0.8–1.1 mm). Carefully screw in the spark plug by handso as not to distort the thread. Then tighten with a torque wrench to:

• 1.2 DIG-T — 20–25 Nm.
• 1.6 / 2.0 — 25–30 Nm.

If you don't have a torque wrench, tighten the spark plug. 1/2 turn after the “stop” (when the candle rests on the seat). Re-stretching spark plugs on an aluminum cylinder head Qashqai J11 may lead to thread failure!

4. Reassemble in reverse order

Reinstall the ignition coils, secure with bolts and connect the connectors. You can apply a little before installation dielectric grease onto the coil tip - this will improve contact and protect against oxidation.

After replacing all the spark plugs, connect the battery and start the engine. It may run erratically for the first few seconds - this is normal as the fuel system adapts to the new spark plugs.

Features of replacement with 1.2 DIG-T (HR12DDT)

On the motor 1.2 DIG-T The spark plugs are hidden under the intake manifold. To access them you need:

1. Remove the decorative engine cover.

2. Unscrew the 4 manifold mounting bolts (10 mm wrench).

3. Carefully lift the manifold (do not disconnect all the pipes, just move it to the side).

4. Remove the spark plugs through the resulting gap.

⚠️ Be careful with the pipes - they are fragile! After replacement, check the tightness of the connections so that there is no air leakage.

Typical mistakes when replacing spark plugs on a Qashqai J11

Even experienced car owners sometimes make mistakes that can lead to serious damage. That's what can't do when replacing spark plugs Qashqai J11:

1. Use the wrong spark plug wrench. A key without a magnetic insert or a rubber seal can drop the spark plug into the well, and getting it out of there is a separate headache.
2. Tighten candles by eye. Overtightening leads to thread failure, undertightening leads to loss of compression. On an aluminum cylinder head Qashqai J11 this is especially critical.
3. Ignore carbon deposits on spark plugs. If new spark plugs quickly become covered with soot, the problem is not with them, but with the engine (for example, the oil seals or injectors are faulty).
4. Change spark plugs one at a time. If one spark plug fails, replace it the whole set! Different wear on the spark plugs leads to uneven operation of the cylinders.
5. Save on candles. Cheap analogues can “break through” after 5,000 km, which will lead to misfires and damage to the coils.

Another common mistake is Incorrect sequence of unscrewing the spark plugs. On Qashqai J11 with motor 2.0 MR20DD It is better to change spark plugs according to the scheme 4-3-2-1 (from the last cylinder to the first). This helps prevent debris from getting into open wells.

⚠️ Attention! If the engine continues to stall after replacing the spark plugs, check:

- Correct connection of the coils (mixed wires are a common mistake).

- Condition of high-voltage wires (if any).

- Error codes from the scanner (perhaps the problem is not in the spark plugs, but in the injectors or sensors).

Cost of replacing spark plugs: service vs independently

Cost of replacing spark plugs Nissan Qashqai J11 depends on engine type and region. On average:

Service	Cost, rub.	Notes
Replacing spark plugs (service)	1 500–3 000	More expensive by 1.2 DIG-T (due to difficulty of access)
Original candles (set)	2 000–4 500	NGK/Denso for 2.0 cheaper than for 1.2 DIG-T
Analogs (set)	800–2 500	Bosch or Beru - budget option
Diagnostics (scanner)	500–1 500	If after replacement it lights up Check Engine

Self-replacement will only cost the cost of spark plugs and, possibly, dielectric grease (200–300 rub.). However, if you do not have experience or special tools (for example, a torque wrench), it is better to contact a service center. This is especially true for 1.2 DIG-Twhere there is a high risk of damage to the intake manifold.

If you decide to change the spark plugs yourself, please note that some services offer free check after replacement. This is a good way to make sure everything is done correctly.

Frequently asked questions (FAQ)

Is it possible to drive with faulty spark plugs?

Technically possible, but not advisable. Worn spark plugs lead to:

• 🔥 Increased fuel consumption (up to 20%).
• 💥 Detonation, which destroys pistons and valves.
• 🚗 Loss of power and jerking during acceleration.

If the spark plug fails completely (for example, the insulator is cracked), the engine will stall, and unburnt fuel will get into the catalyst and disable it.

Which spark plugs are better - iridium or regular ones?

Iridium spark plugs last longer (up to 100,000 km) and provide a more stable spark, but cost 2–3 times more expensive. Regular nickel ones are cheaper, but they need to be changed more often (30,000 km).

For Qashqai J11 with 1.2 DIG-T Iridium spark plugs are preferred due to the high temperatures in the combustion chamber. On naturally aspirated engines (1.6 And 2.0) the difference is less noticeable.

What to do if a candle breaks off in a well?

This is one of the most unpleasant situations. Solutions:

1. Use special extractor for broken spark plugs (sold in car dealerships).
2. Carefully drill out the remaining spark plug and cut a new thread (experience required!).
3. Contact a service center where they will unscrew the spark plug using left hand drill.

⚠️ Do not try to remove the fragment with pliers or a screwdriver - this will damage the thread in the cylinder head!

Do I need to lubricate the spark plug threads?

No, lubricate the spark plug threads not recommended. This may lead to:

• 🔧 Retightening (lubrication reduces friction and the spark plug tightens more than necessary).
• 🔥 Burning of the candle (lubricant can coke and interfere with heat dissipation).

Exception - copper paste to prevent sticking, but it is used only on old engines with a cast iron cylinder head. On Qashqai J11 (aluminum head) it is not needed.

How often do you need to check the spark plugs if the car is filled with gas (LPG)?

On cars with LPG, spark plugs wear out faster due to:

• 🔥 Higher gas combustion temperature.
• 💥 Reduced gap between electrodes (gas requires a “hotter” spark).

Recommended replacement interval - every 20,000 km. Also worth using spark plugs with a lower heat rating (For example, NGK BPR6ES instead of BPR7ES).