<em>Nissan Tiida</em>ignition coil tip: diagnostics, replacement and selection of spare parts

The ignition coil tip is a small but critical part in the ignition system. Nissan Tiida (especially for models with engines HR16DE And MR18DE). Its malfunction leads to misfires, increased fuel consumption and even damage to the catalyst. Unlike the coils themselves, which are often replaced in a complex manner, the tips fail more often due to high-voltage breakdown, corrosion or mechanical wear.

In this article we will look at how Recognize symptoms of tip failure, what tools are needed for replacement, and how to avoid common mistakes when installing new parts. We will place special emphasis on original articles Nissan (22448-JM00A, 22448-4M005) and proven analogues from NGK, Denso, as well as the nuances of working with engines of different years of production (2007–2017).

Signs of a bad ignition coil tip

The first signals of problems with the tips are often confused with a malfunction of the spark plugs or the coils themselves. However there is characteristic symptoms, which help more accurately diagnose the problem:

• ⚡ Misfires on a cold or hot engine (especially noticeable in wet weather).
• 🔥 Triple motor, which temporarily disappears after warming up, but returns under high loads.
• 💨 Increased fuel consumption by 10–15% for no apparent reason (the ECU compensates for the omissions by enriching the mixture).
• ⚠️ Check Engine with codes P0300–P0304 (random/multiple omissions) or P0351–P0354 (coil circuit malfunction).

Important: if misfires occur only in high humidity, with a 90% probability, a breakdown of the tip insulation is to blame. In dry weather, cracks in the rubber can “heal”, masking the problem.

⚠️ Attention! If misfires are ignored for more than 2-3 weeks, unburned fuel will enter the catalyst and cause it to fail. Repair will cost 3–5 times more than replacing tips.

For an accurate diagnosis, use breakdown test in the dark: Open the hood at night, start the engine and watch the coils. Bluish sparks between the tip and the ground are a sure sign of a breakdown.

Original and similar tips for Nissan Tiida

For Tiida (C11, C13) with engines HR16DE (1.6 l) and MR18DE (1.8 L) the following parts fit:

When choosing analogues, pay attention to insulator material: In cheap tips, the rubber often hardens in the cold, which leads to microcracks. Original parts Nissan serve on average 80–100 thousand km, while analogues are 40–60 thousand km.

Tip: if you buy a set of ignition coils (for example, Hitachi or Delphi), check if the tips come with them. Often the sets use low quality universal tips - it is better to purchase original ones separately.

Tools and preparation for replacement

To replace tips with Tiida You will need a minimum set of tools, but there are nuances depending on the year of manufacture:

• 🔧 10 mm socket wrench (for removing coils on HR16DE).
• 🔧 8 mm head (for MR18DE since 2014).
• 🔧 Flat head screwdriver (for prying up the harness clamps).
• 🧤 Dielectric gloves (protection against breakdown during testing).
• 🔍 Flashlight (lighting hard-to-reach places under the coils).

Important: before starting work disconnect the negative terminal of the battery and wait until the engine cools down (coil temperatures may exceed 80°C). On models with MR18DE after 2015 you will have to remove the intake manifold to access the 3rd and 4th coils.

Disconnect the battery (terminal “−”)

Clean the area around the coils from dirt (vacuum cleaner or compressed air)

Take photographs of the location of wires and connectors

Prepare new tips and silicone grease (for example, Liqui Moly Silicon-Fett)

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⚠️ Attention! Do not use WD-40 or other liquid lubricants on the tips - they attract dust and accelerate the wear of the insulation. Only dielectric silicone grease!

Step-by-step instructions for replacing tips

The replacement process is different for HR16DE And MR18DE, but the general scheme is as follows:

1. Removing the ignition coil:

   • On HR16DE: unscrew the coil mounting bolt with a 10 mm wrench, pull the coil up with force (it may “stick” to the spark plug).
   • On MR18DE: first remove the decorative motor cover and disconnect the coil power connector (latch at the top).

Removing the old tip:

Gently pull the tip up, rocking it from side to side. If it gets stuck, don’t pull it - spray it PB Blaster and wait 10 minutes. If you remove it forcefully, you can damage the coil winding!

Installing a new tip:

Apply a thin layer of dielectric grease to inner surface tip (not on the candle!). Place it on the reel until it clicks and you should hear a characteristic locking sound.

Check:

After assembly, start the engine and check for errors with a scanner (for example, ELM327). If the code appears P0351, check the contact of the coil connector.

On Tiida with MR18DE after 2015 may be required reset ECU adaptations after replacing tips. To do this:

1. Disconnect the battery for 15 minutes.
2. Connect the scanner and run the command Reset ECU Adaptations (in programs like Nissan DataScan).

What should I do if the new tip does not lock in?

If the tip does not “sit” on the spool until it clicks, check:

1) Compatibility of the article with your model (on MR18DE after 2016, tips with a modified lock are used).

2) The integrity of the plastic retainer on the reel - it could break when removing the old tip.

3) The presence of foreign objects in the groove (dust, remnants of old rubber).

Typical replacement mistakes and how to avoid them

Even experienced car owners make mistakes that lead to repeated misfires. Here are the most common:

• 🔌 Incorrect installation of the power connector - if the polarity is reversed, the coil will fail within 1-2 starts.
• 🧴 Using the wrong lubricant — graphite or lithium grease conducts current and causes breakdowns.
• 🔧 Retightening the coil mounting bolt — leads to housing deformation and internal short circuits.
• 🔍 Ignoring cracks in spark plug wells — moisture penetrates through them, accelerating the corrosion of new tips.

Particularly dangerous replacing only one tip upon breakdown. If the resource of the others comes to an end (usually after 60–80 thousand km), they will fail in the coming months. It is optimal to change as a set, even if symptoms appear on only one cylinder.

⚠️ Attention! On Tiida with MR18DE after 2013 the coils have custom firmware. When replacing the coil (not the tip!) be sure to follow the procedure Variation Learn through a diagnostic scanner, otherwise the engine will run unstable.

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When replacing tips with Nissan Tiida with engine HR16DE Resetting errors is enough. On MR18DE (2014+) ECU adaptation reset or procedure required Variation Learn!

How to extend the life of tips?

The average service life of tips is 50–80 thousand km, but with proper care it can be increased to 100–120 thousand km. Here's what really works:

• 🚿 Wash the engine 1–2 times a year with removing dirt from spark plug wells (use compressed air, not water!).
• 🛢️ Application of dielectric grease every time you replace spark plugs (even if the tips were not removed).
• ⚡ Checking high voltage wires for breakdown (especially important for humid climates).
• 🔧 Regular diagnostics with a scanner (codes P0300–P0304 at an early stage often indicate an incipient breakdown).

Important: If you frequently ride off-road or in high humidity conditions, reduce the tip inspection interval to 30 thousand km. Under such conditions, the rubber of the insulator ages 2–3 times faster.

For additional protection you can use silicone cases to coils (for example, from Crc Industries). They prevent moisture and dirt from entering, but require regular cleaning - condensation can accumulate under the cover.

FAQ: Frequently asked questions about ignition coil tips Nissan Tiida

Is it possible to drive with a broken tip if misfires are rare?

No, this leads to catalyst overheating and its destruction. Even single omissions increase the load on the neutralizer by 5–7 times. If you ignore the problem for 1-2 months, the repair will cost 20-40 thousand rubles (replacing the catalyst or installing blende).

How to distinguish a tip breakdown from a coil malfunction?

Swipe permutation test:

1. Swap the coils from different cylinders (for example, 1st and 3rd).
2. If the misfires “move” to another cylinder, the coil is to blame.
3. If they remain in the same place, the problem is in the tip or spark plug.

Also inspect the tip in the dark: a breakdown produces a visible spark.

Do I need to change spark plugs along with their tips?

Required if:

• The spark plugs worked for more than 30 thousand km (for iridium ones - 60 thousand km).
• There are traces of oil or carbon deposits on the electrodes (indicates problems with valve stem seals or the fuel system).
• The gap between the electrodes exceeds 1.1 mm (for Tiida the norm is 0.8–1.0 mm).

New tips for old spark plugs will accelerate wear of the first ones due to an unstable spark.

What is the difference between the tips for HR16DE and MR18DE?

Main differences:

Parameter	HR16DE	MR18DE
Tip length	45 mm	50 mm
Insulator material	Rubber	Silicone (original)
Retainer	Metal	Plastic (since 2015)

Tips are not interchangeable! Installation of the part from HR16DE on MR18DE will lead to breakdown due to insufficient length.

Can the tips be repaired (for example, by sealing cracks)?

No, it's dangerous! Even a small crack in the insulator leads to current leakage, which causes:

• Increased load on the coil (it overheats and fails).
• Unstable spark and misfires.
• Risk of fire if there is a breakdown to ground (especially if the crack is near the fuel lines).

Cost of a new tip (NGK U5038) - only 300–500 rubles, while repairing the consequences will cost tens of times more.