Replacing spark plugs on a Nissan Note E11: a complete guide with photos and videos

Replacing spark plugs with Nissan Note E11 - a procedure that many owners prefer to perform on their own. And for good reason: with the right approach, this task will take no more than an hour, save up to 3-5 thousand rubles at a service station and guarantee stable engine operation. However, even such a seemingly simple operation has its pitfalls: from choosing the right spark plugs to the risk of damaging the ceramic insulator during careless dismantling.

In this article we will look at all stages of replacement — from diagnosing the condition of old spark plugs to installing new ones, taking into account the specifics of engines HR15DE And HR16DE, which comes with Note E11. You will learn what tools you will need, how to avoid common mistakes (for example, over-tightening or under-tightening spark plugs), and why Using a torque wrench when working with an aluminum cylinder head is not a whim, but a necessity. We will also analyze symptoms indicating wear of the spark plugs and give recommendations on choosing analogues of original parts from NGK And Denso.

When to change spark plugs on a Nissan Note E11: signs and regulations

The manufacturer recommends replacing spark plugs with Nissan Note E11 every 30,000–40,000 km mileage (or once every 2–3 years), but this interval may be shortened depending on operating conditions. For example, with frequent driving over short distances (when the engine does not have time to warm up to operating temperature) or using low-quality fuel, the life of the spark plugs is reduced by 20–30%.

The following symptoms indicate the need for replacement:

• 🔥 Engine tripping - especially noticeable at idle or during acceleration. One or more cylinders are not running smoothly due to a weak spark.
• ⚡ Increased fuel consumption — worn spark plugs lead to incomplete combustion of the mixture, which forces the ECU to enrich it, increasing the engine’s appetite.
• 🚗 Dips when accelerating — the car jerks or “stumbles” when you sharply press the gas pedal.
• 🔧 Difficult start - especially in cold weather, when a weak spark cannot ignite the air-fuel mixture the first time.

If you ignore these signs, the consequences can be serious: from detonation (which destroys pistons and rings) to breakdown of the ignition coil — replacing it will cost 5–8 thousand rubles. Therefore, it is better not to wait for critical wear, but to diagnose spark plugs every 15–20 thousand km.

⚠️ Attention: On Nissan Note E11 with engine HR16DE (1.6 l) when replacing spark plugs, be sure to check the condition o-rings on the valve cover. Their wear can lead to air leaks and errors. P0171 (lean mixture).

Which spark plugs are suitable for Nissan Note E11: original vs analogues

Original spark plugs for Note E11 supplied by the company NGK under the article 22401-JM00B (or PLZKAR6A-11 in the manufacturer's catalog). Their average price is 800–1200 rubles for a set of 4 pieces. However, there are worthy analogues on the market that are not inferior in quality, but are cheaper:

Manufacturer	Article	Price per piece, ₽	Features
NGK (original)	PLZKAR6A-11	300–350	Platinum central electrode, resource up to 60 thousand km
Denso	FK16HR11	280–320	Iridium tip, improved sparking
Bosch	FR7DPX	250–300	4 electrodes, dirt resistant
Champion	OE201/T10	200–240	Budget option, suitable for a quiet ride

When choosing analogues, pay attention to heat number - for Note E11 it must be 6 (candles with number 5 or 7 lead to detonation or malfunction). The thread length is also important: 26.5 mm. Spark plugs with different lengths may rest against the piston or fail to provide a tight seal.

If you prefer iridium spark plugs, pay attention to Denso Iridium Power IK16 or NGK IFR6A11. They last up to 100 thousand km, but their price starts from 500 rubles apiece. The optimal choice for those who travel a lot and want to forget about replacement for a long time.

Tools and materials for replacing spark plugs

To replace spark plugs yourself Nissan Note E11 you will need:

• 🔧 Candle key 16 mm with a rubber bushing (to grip the spark plug). A regular socket wrench will not work - it will not hold the spark plug when removing it.
• 🔩 Torque wrench (optional, but highly recommended). Spark plug tightening torque: 20–25 Nm. Over-tightening is fraught with the risk of breaking the threads in the aluminum cylinder head.
• 🛠️ Extension and ratchet handle — for access to the spark plugs of the 2nd and 3rd cylinders.
• 🧲 Magnetic screwdriver or tweezers — so as not to drop the spark plug into the engine compartment.
• 🧴 Thread lubricant (For example, Liqui Moly Kupfer-Spray) - prevents candles from sticking.
• 🧹 Compressor or can of compressed air - for cleaning spark plug wells from dust.

Also prepare rags And medical alcohol — you will use them to wipe the seats before installing new spark plugs. If dirt remains in the wells, it will enter the cylinders and may cause scratches on the mirror.

⚠️ Attention: Never use WD-40 or other penetrating lubricants to make it easier to unscrew the spark plugs! They can get on the electrodes and cause misfires. If the spark plug is stuck, use a special compound for threaded connections (for example, Liqui Moly MoS2-Spray).

Make sure the engine is completely cool (working on a hot engine is dangerous!)

Disconnect the negative battery terminal

Clear the area around the spark plug wells of debris.

Have new candles and tools within reach-->

Step-by-step instructions for replacing spark plugs on a Nissan Note E11

The process of replacing spark plugs Note E11 is the same for both engines (HR15DE And HR16DE). The main difference is the location of the ignition coils: on the 1.6-liter engine they are recessed a little deeper. Let's get started:

Step 1. Removing the ignition coils

1. Remove the plastic decorative engine cover (it is secured with 4 latches).
2. Disconnect the power connector from the coil of the first cylinder (closest to the timing belt). To do this, press the latch and pull it up.
3. Unscrew the coil mounting bolt with a wrench 10 mm and carefully remove it. Do not pull on the wire - you may damage the contacts!

Step 2. Removing old spark plugs

1. Blow out the spark plug well with compressed air to remove dust.
2. Place the spark plug wrench on the spark plug and turn it counterclockwise. If the candle does not budge, do not use excessive force - it is better to use decarbonizing liquid (For example, LAVR ML202), applying it to the thread.
3. After unscrewing, remove the spark plug using a magnetic screwdriver or tweezers.

Step 3. Installing new spark plugs

1. Check the gap between the electrodes - it should be 1.0–1.1 mm. If necessary, adjust it with a special feeler gauge.
2. Apply a thin layer of lubricant to the threads of the new spark plug (not the ceramic insulator!).
3. Screw the spark plug in by hand until it stops, then tighten it with a torque wrench to 20 Nm.
4. Install the ignition coil in place and secure it with a bolt (tightening torque - 8–10 Nm).

Repeat the procedure for the remaining cylinders. After replacing all spark plugs, connect the battery and start the engine. It may work unstable for the first 2-3 minutes - this is normal, as the ECU adapts to the new spark plugs.

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

If the spark plug breaks when unscrewing and part of it remains in the cylinder head, do not panic. You will need broken spark plug extractor (For example, Lisle 65600). Algorithm of actions:

1. Place the extractor on the fragment and secure it.

2. Turn counterclockwise until the chip begins to come out.

3. If the extractor does not help, contact service - attempts to drill the spark plug yourself may damage the threads in the cylinder head.

Typical mistakes when replacing spark plugs and how to avoid them

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

1. Over-tightening or under-tightening of spark plugs

Aluminum cylinder head HR15DE/HR16DE very sensitive to tightening torque. Excessive force (>25 Nm) leads to thread failure, and weak tightening (<15 Nm) leads to gas breakthrough and overheat the spark plug. Always use a torque wrench!

2. Debris getting into the cylinders

If you don't clean the spark plug wells before removing the old spark plugs, dirt will get into the combustion chamber. This is fraught scoring on the piston And accelerated wear of rings. Always blow out the wells with air and wipe them with a rag soaked in alcohol.

3. Using the wrong candles

Installing spark plugs with the wrong heat rating or thread length leads to:

• 🔥 Detonation (if the heat number is too low).
• ❄️ Business interruptions on a cold engine (if the number is high).
• 💥 Collision between piston and spark plug (if thread length exceeds 26.5 mm).

4. Ignoring the state of the ignition coils

When replacing spark plugs, be sure to inspect the coils for cracks or signs of breakdown. If there are black spots or chips on the body, the coil needs to be replaced (original article number - 22448-JM00A). A coil breakdown can mimic the symptoms of faulty spark plugs!

Diagnostics of engine operation after replacing spark plugs

After installing new spark plugs, you need to make sure that the engine is running correctly. Here's what to do:

1. Check at idle speed

Start the engine and listen to it work. Please note:

• 🎵 Evenness of sound — there should be no vibrations or “tweaking”.
• 📉 Speed stability — the tachometer needle should remain at 700–800 rpm without jumps.
• 🔥 Exhaust color - the smoke should not be black (this is a sign of an over-enriched mixture).

2. Test drive

Drive 5–10 km, paying attention to:

• ⚡ Acceleration dynamics — the car should respond to the gas pedal without delay.
• 🛣️ Behavior at high speeds — at 3000–4000 rpm there should be no “dips”.
• 💨 Fuel consumption — after replacing the spark plugs it should decrease by 5–10%.

3. Reading errors

If the dashboard lights up Check Engine, connect a diagnostic scanner (for example, ELM327) and check the error codes. Common mistakes after replacing spark plugs:

• P0300 - random misfires (the coil may be faulty).
• P0301–P0304 — leaks in a specific cylinder (check the spark plug gap or its tightening).

If the engine is unstable, return to the test:

• 🔧 Correct connection of the coils (mixed up connectors will lead to errors).
• 🔥 Condition of new spark plugs (sometimes there are defects - check the gap).
• 🛢️ Fuel quality (bad gasoline can “flood” the candles even after replacement).

Frequently asked questions (FAQ)

Is it possible to change spark plugs on a hot engine?

No, it's fraught thread damage in the block head. When heated, aluminum expands and the tightening torque of the spark plugs changes. In addition, the risk of getting burned on hot parts is very high. Always allow the engine to cool to ambient temperature (2-3 hours after driving).

How long do iridium spark plugs last on Note E11?

Iridium spark plugs (eg Denso IK16 or NGK IFR6A11) on average nurse 80–100 thousand km, but this period depends on:

• Fuel quality (additives in gasoline accelerate wear of the electrodes).
• Driving style (frequent sharp accelerations reduce the resource).
• Engine conditions (oil burns or antifreeze getting into the cylinders kills spark plugs within 10–20 thousand km).

Even if the spark plugs are “iridium”, check their condition every 30 thousand km!

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

Ignoring replacement of spark plugs leads to:

1. Damage to ignition coils (due to increased resistance on worn spark plugs).
2. Detonation, which destroys pistons and rings.
3. Increased fuel consumption (up to 15–20%) and loss of power.
4. Problems launching in cold weather (candles cannot ignite a cold mixture).

In critical cases it may be necessary engine overhaul.

Is it possible to clean old spark plugs and install them back?

Theoretically yes, but not recommended. Even after cleaning (sandblasting or ultrasonic), the life of the candle is reduced by 30–50%, since:

• The coating on the electrodes (platinum/iridium) wears off.
• The geometry of the gap is violated.
• Carbon deposits remain in microcracks in ceramics, which can cause breakdown.

It is justified to carry out cleaning only in “field” conditions if new spark plugs are not at hand.

Which spark plugs are best for gas (gas) on Note E11?

If your Nissan Note E11 equipped with HBO, spark plugs must be "colder" (heat number is 1–2 units higher than standard). Suitable options:

• NGK PLZFR6A-11 (heat number 7, iridium).
• Denso IW16 (resistant to high temperatures).

Also reduce gap between electrodes to 0.7–0.8 mm - this will improve the ignition of the gas-air mixture.