Nissan Almera N16 - a popular sedan of the early 2000s, which is still actively used on the roads of the CIS. One of the common problems of owners is failure exhaust system resonator. This element not only affects the exhaust sound, but also protects the muffler from premature wear. In this article we will look at how to determine if a resonator is faulty, which analogues are suitable for replacement, and how to carry out repairs yourself without errors.

Many car owners confuse the resonator with a muffler or catalyst, but it has a different function: smoothing of exhaust gas pulsations and noise reduction at mid frequencies. On Almera N16 The resonator is located between the catalytic converter and the main muffler, and its corrosion or breakdown leads to a characteristic “hum” under the bottom. If you ignore the problem, the consequences can be many times more expensive, including replacing the entire exhaust system.

Signs of a resonator malfunction on a Nissan Almera N16

The first signal about problems with the resonator is change in exhaust sound. On Almera N16 with engines 1.5 (QG15DE) And 1.8 (QG18DE) this manifests itself in different ways:

  • 🔊 Loud bang when releasing gas or changing gears - a sign of a burnt-out partition inside the resonator.
  • 🚗 Metal clink on uneven surfaces - indicates cracks in the body or fallen off internal elements.
  • 💨 Exhaust smell in the cabin — depressurization of joints or breakdown near the heat shield is possible.
  • 🔥 Black marks on the body - indicates overheating due to a clogged catalyst (in this case, the resonator suffers a second time).

On Almera N16 with a mileage of over 150 thousand km, the resonator often “dies” along with the muffler - corrosion eats away welds and thin-walled metal. Vehicles operated in regions with salty roads in winter or frequent temperature changes. If you notice at least one of the listed symptoms, inspect the resonator on the overpass or pit. On models produced in 2000–2003, the resonator is attached to the body through rubber hangers, which also wear out and can tear, aggravating the vibration.

⚠️ Attention: Do not confuse the sound of a broken resonator with catalyst problem. If the engine “chokes” at high speeds and burns Check Engine, first check the errors with a scanner - code P0420 will indicate a faulty catalytic converter, not a resonator.
📊 How often do you check the condition of the exhaust system?
  • Once a year
  • Only when there is noise
  • Never checked
  • I inspect it myself every 10 thousand km

Original vs analogues: which resonator to choose for Almera N16

Original resonator from Nissan has an article number 20620-4M000 (for models from 2000 to 2006). Its average price is 8–12 thousand rubles, but it’s difficult to find a new original; they often offer used parts. An alternative is analogues from trusted manufacturers:

Brand Article Price, rub. Features
Bosal 254-410 3 500–4 200 Stainless steel, direct replacement for the original
Walker 20846 4 800–5 500 Reinforced design, 2 year warranty
Eberspächer 93542100 6 000–7 000 Galvanized housing, suitable for extreme conditions
SASIC 4020620 2 800–3 300 Budget option, average resource 2–3 years

When choosing an analogue, pay attention to:

  • 🔧 Housing material: Stainless steel will last longer than galvanizing, but also costs 30–50% more.
  • 📏 True to size: the resonator should fit perfectly onto the standard mounts without modifications.
  • 🔊 Noise level: cheap analogues can “growl” louder than the original.

Advice: If you plan to drive the car for a long time, take a resonator with double walls (For example, Walker or Eberspächer). They are quieter and last 1.5–2 times longer than budget options. Suitable for a temporary solution SASIC, but be prepared to replace it after 2-3 seasons.

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Before purchasing a resonator, check the condition of the exhaust system flanges and hangers. If they are worn out, replace them along with the resonator - this will save time and money in the future.

Step-by-step replacement of the resonator on Nissan Almera N16

You can replace the resonator yourself with a minimal set of tools. Opening hours - 1.5–2 hours (excluding removal of protection, if any). You will need:

  • 🔧 Set of sockets (10, 12, 14 mm) and ratchet handle.
  • 🔨 Grinder or hacksaw for metal (if the resonator is stuck).
  • 🧰 WD-40 or a similar composition for loosening rusty nuts.
  • 🔥 Gas burner (optional, for heating stuck compounds).
  • 🛠 New clamps and gaskets (if replacement is required).

Work order:

  1. Drive the car onto a pit or overpass, lock the handbrake and put chocks under the wheels.
  2. Treat all threaded connections of the resonator WD-40 and wait 10–15 minutes.
  3. Unscrew the clamps connecting the resonator to the catalyst and muffler. If the nuts do not budge, cut them off with a grinder.
  4. Remove the rubber hangers holding the resonator (they can be cut off with a knife if they are stiff).
  5. Install the new resonator, secure it to the hangers and tighten the clamps. Do not overtighten connections - this may deform the flanges.
  6. Check the system for leaks: start the engine and inspect the joints for leaks.

Treat all threaded connections with WD-40|Check for new clamps and gaskets|Prepare a cutting tool (grinder/hacksaw)|Fix the machine on a pit or overpass|Loosen the nuts in advance (until the exhaust system cools completely)-->

⚠️ Attention: On Almera N16 the resonator is attached to the body through three rubber hangers. If they are torn, be sure to replace them - otherwise the new resonator will hit the bottom on bumps, which will lead to premature wear.

If the resonator is stuck to the pipes, use gas burner for local heating of the joint. Heat the joint until it turns red (do not point the flame at the rubber parts!), then try to unscrew the nut. In 90% of cases this helps avoid cutting.

What to do if the resonator is rusted to holes, and a new one is not available?

Temporary solution - weld the holes or wrap the damaged area heat resistant tape (For example, DoneDeal). This will extend the life of the resonator by 3–6 months, but will not replace a full repair. Do not use regular electrical tape or adhesive tape - they will melt from the temperature of the exhaust gases!

Typical mistakes when replacing a resonator and how to avoid them

Even experienced car owners make mistakes that shorten the life of a new resonator. Here are the most common:

  • 🔩 Re-stretching clamps — leads to flange deformation and leaks. Tighten the clamps manually until it stops, then tighten it 1/4 turn with the wrench.
  • 🔥 Ignoring Heat Shields - if the screen is bent or missing, the resonator will overheat, which will accelerate corrosion.
  • 🚫 Using sealant at joints - on Almera N16 No sealant is needed if the clamps are tightened correctly. Its use can, on the contrary, cause leakage when heated.
  • 🔊 Buying a resonator without checking the sound - some analogues (especially Chinese) emit an unpleasant low-frequency hum. Before purchasing, read reviews on forums.

Critical error: replacing only the resonator with a worn muffler or catalyst. If catalytic converter clogged, the exhaust gas pressure will increase, and the new resonator will last several times less. Please check before installation catalyst permeability — to do this, just disconnect the pipe in front of it and start the engine. If the gas flow is weak, the catalyst requires replacement.

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On the Almera N16, the resonator and muffler are a single system. If one of the elements is worn out, the second one will not last long. It is optimal to change them simultaneously or at intervals of no more than 1 year.

Cost of replacing the resonator at a service center vs self-repair

The price of replacing a resonator in a car service depends on the region and complexity of the work. The average prices in Russia are as follows:

Type of work Cost, rub. Time, hours
Replacing the resonator (without cutting) 1 500–2 500 1–1.5
Replacement with cutting/welding 3 000–4 500 2–3
Replacing the resonator + muffler 4 000–6 000 2.5–3.5
Exhaust system diagnostics 500–1 000 0.5

Self-replacement will only cost the cost of the spare part (from 2,800 rub. for a budget analogue). However, keep in mind:

  • ⚠️ It is extremely inconvenient to work without a pit or overpass (risk of getting burned on the exhaust system).
  • ⚠️ Sticky nuts may require a grinder, which will increase the repair time.
  • ⚠️ Installation errors will lead to leaks and repeated replacement.

If you do not have experience, it is better to entrust the work to professionals. But if you are confident in your abilities, replacing it yourself will save 3–5 thousand rubles. The main thing is not to rush and follow the instructions.

How to extend the life of the resonator on Nissan Almera N16

Resonator service life at Almera N16 depends not only on the quality of the part, but also on the operating conditions. Here are some tips to help avoid premature corrosion:

  • 🚿 Cleaning the exhaust system in winter — after driving on salty roads, rinse the resonator with water (not ice!). This washes away the salt, but don't do this when the engine is hot - the sudden temperature change is harmful to the metal.
  • 🛣 Avoid deep puddles — water entering a hot resonator accelerates corrosion. If you drive through a puddle, let the car idle for 5-10 minutes to allow the exhaust system to dry out.
  • 🔧 Regular inspection — once every 6 months, check the resonator for rust, especially in the weld areas.
  • 🔥 Engine temperature monitoring — overheating of the motor leads to an increase in the temperature of the exhaust gases, which reduces the life of the resonator.

If you often drive off-road, install exhaust system protection (for example, a metal screen under the resonator). This will protect it from being hit by stones and branches. It is also worth treating the resonator body heat-resistant anti-corrosion mastic (For example, Liqui Moly Unterbodenschutz), but it must be applied to a cold surface.

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After replacing the resonator, avoid sudden acceleration for the first 100–200 km. This will allow the new gaskets and clamps to “settle down” and also prevent the risk of depressurization of the joints.

Frequently asked questions about the resonator Nissan Almera N16

Is it possible to drive with a broken resonator?

Technically yes, but this is fraught with consequences:

  • Will increase exhaust noise (may interfere with you and other drivers).
  • They will enter the salon exhaust gases, which is harmful to health.
  • A faulty resonator accelerates wear muffler and a catalyst.

If the hole is small, you can temporarily seal it or use a heat-resistant sealant, but you shouldn’t delay replacing it.

How to distinguish the sound of a broken resonator from a muffler?

The resonator gives metallic ringing or popping noises at medium speeds, and the muffler is usually growls on low or “shoots” when releasing gas. To pinpoint the source of noise:

  1. Start the engine and listen to the sound under the hood and behind the car.
  2. Tap the resonator and muffler with a metal object - the broken element will ring “empty”.
Is it necessary to register the replacement of the resonator in the PTS?

No, the resonator is consumable elementlike a muffler or brake pads. Replacing it does not require changes to the car documents. However, if you change catalytic converter to flame arrester, this is already considered a design change and will require registration with the traffic police.

Is it possible to install a resonator from another Nissan model?

Theoretically, yes, but only if:

  • Match pipe diameters and location of fasteners.
  • The length of the resonator does not interfere ground clearance and does not cling to suspension elements.

In practice, it is easier to buy an analogue for Almera N16, since the resonators are from Primera P12 or Sunny N16 may not fit in geometry.

How long does the resonator last on Almera N16?

Service life depends on several factors:

  • Original — 80–120 thousand km.
  • High-quality analogue (For example, Bosal or Walker) - 60–100 thousand km.
  • Budget analogue — 30–50 thousand km.

In northern regions or during aggressive driving, the resource is reduced by 30–40%.