Nissan Almera Classic (also known as N16 or B10 in some markets) - a reliable sedan with engines QG15DE And QG18DE, which are equipped with a timing chain drive. Unlike belt analogs, the chain is considered more durable, but this does not mean that it is eternal. A missed replacement moment can result in overhaul of the engine due to the meeting of the pistons with the valves - the problem is relevant for both engines Almera Classic.

In this article, we will look at exactly when the timing chain needs to be replaced, how to independently diagnose its wear, what spare parts to choose and how to avoid common mistakes when replacing. We will also provide step-by-step instructions with nuances for engines 1.5 And 1.8 liters

Timing for timing chain replacement: official recommendations and real experience

Manufacturer Nissan in the manuals for Almera Classic indicates that the timing chain is designed to the entire service life of the engine. However, in practice, this statement is only true for ideal operating conditions: regular maintenance, high-quality oil and no overheating. In Russian realities, the life of the chain is reduced by 2–3 times.

The experience of car owners and service station technicians shows the following average replacement times:

  • 🔧 120–150 thousand km - for the engine QG15DE (1.5 l) when using semi-synthetic oil.
  • 🔧 150–180 thousand km - for QG18DE (1.8 l) when filling with synthetics and gentle driving mode.
  • ⚠️ 80–100 thousand km - if the car was operated with low-quality oil or frequent overheating.

It is important to consider that the chain does not stretch evenly, but in steps. The first signs of wear may appear after 100 thousand km, but critical changes occur closer to 150 thousand km. For example, on QG18DE stretching the chain by 1–2 teeth leads to a failure of the valve timing and loss of power.

📊 At what mileage did you replace the timing chain on your Almera Classic?
  • Up to 100 thousand km
  • 100–150 thousand km
  • 150–200 thousand km
  • Haven't changed it yet
  • I don't know

Signs of a worn timing chain: how to diagnose the problem

The timing chain wears out gradually, and the first symptoms often go unnoticed. Key signs to look out for:

  • 🔊 Metallic knock in the engine area when cold (especially noticeable during startup). The sound may disappear after warming up as the chain tightens slightly.
  • 📉 Power drop and “failures” during acceleration - due to a violation of the valve timing.
  • ⚡ Check Engine with errors P0011 (camshaft misalignment) or P0340 (phase sensor malfunction).
  • 🔄 Unstable idle - the engine may stall or stall.

For an accurate diagnosis, you can use a strobe light or computer diagnostics, but there is also a simple way: remove the valve covers and check the chain tension manually. If, when pressing on the chain, there is more than 10 mm of play between the links, it is time to change it.

⚠️ Attention: On Almera Classic with motor QG18DE a stretched chain can jump 1-2 teeth, which will lead to bending of the valves. This engine has no protection from the meeting of pistons with valves!

What spare parts are needed for replacement: original vs analogues

To replace the timing chain with Nissan Almera Classic You will need a kit that includes:

  • 🔗 The timing chain itself (original article number: 13028-4M50A for QG15DE, 13028-95X0A for QG18DE).
  • 🔧 Chain tensioner (article: 13070-4M500).
  • 🔧 Chain stabilizer (article: 13085-4M500).
  • 🔧 Tensioner shoe (article: 13080-4M500).
  • 🔧 Valve cover gasket (part number: 11044-4M500).

The cost of the original set is from Nissan is about 15–20 thousand rubles. However, many car owners choose analogues from trusted brands:

Brand Kit article number Approximate price, rub. Features
Ajusa 81006600 8 000–10 000 Good quality, but the dampener may be less durable.
Febi 22617 10 000–12 000 German quality, full compatibility with the original.
Gates K015631XS 12 000–14 000 The best choice in terms of price/quality ratio, recommended for QG18DE.
Dayco KTB580 9 000–11 000 A budget option, but the chain can stretch faster.

When choosing analogues, pay attention to the availability of all the necessary details, including small rubber seals. For example, some kits are missing the valve cover gasket, which can lead to oil leakage after replacement.

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Before purchasing a kit, check it for all the items in the catalog. Nissan. Often, cheap sets do not have a tensioner guide or shoe, which reduces the chain life by 30–40%.

Step-by-step instructions for replacing the timing chain

Replacing the timing chain with Nissan Almera Classic requires removing the front engine cover, so you can’t do without a pit or a lift. Below is the instruction for the engine QG18DE (1.8 l), for QG15DE (1.5 l) the process is similar, but the timing marks are located slightly differently.

Drain the oil and antifreeze|Remove the alternator belt and air conditioning compressor|Disconnect the battery|Prepare marks for fixing the camshafts|Check the presence of all spare parts from the kit-->

Step 1: Removing the old chain

1. Remove the right front wheel and plastic mudguard.

2. Loosen the generator belt tensioner and remove the belt.

3. Unscrew the timing cover bolts (there are 12 of them, 4 of them are hidden under the crankshaft pulley).

4. Secure the crankshaft pulley using a puller or screwdriver, then unscrew the fastening bolt.

5. Remove the pulley and front timing cover. Be careful - oil may leak under the cap.

Step 2: Setting the marks and removing the chain

1. Rotate the crankshaft until the mark on the sprocket aligns with the mark on the cylinder block.

2. Make sure that the marks on the camshafts match the marks on the cylinder head cover. If not, rotate the crankshaft another 360°. On QG18DE the labels should look like this:



Впускной распредвал: метка вверху (12 часов)


Выпускной распредвал: метка слева (9 часов)


Коленвал: метка на звёздочке совпадает с отливом на блоке

3. Loosen the chain tensioner and remove it along with the shoe and guide.

Step 3: Installing a New Chain

1. Install a new tensioner shoe and damper.

2. Place a new chain on the crankshaft sprocket, then on the camshafts, following the marks.

3. Install the new tensioner, but do not secure it completely.

4. Rotate the crankshaft 2 turns and check that the marks match. If everything matches, fix the tensioner.

Step 4: Assembly

1. Install the front timing case cover with sealant (for example, Loctite 574).

2. Tighten the cover bolts in the order specified in the manual (usually from the center to the edges).

3. Install the crankshaft pulley and tighten the bolt to torque 100–120 Nm.

4. Fill with new oil and antifreeze, start the engine and check for any abnormal noise.

What should I do if the labels do not match after installation?

If after two revolutions of the crankshaft the marks do not match, then the chain is installed incorrectly. Don't start the engine! Remove the chain and repeat installation starting from step 2. A common mistake is the chain jumping 1 tooth due to a weak tensioner.

Typical mistakes when replacing a timing chain

Even experienced craftsmen sometimes make mistakes that lead to rapid chain wear or engine failure. Here are the most common:

  • ❌ Ignoring labels - if the chain is installed offset by 1 tooth, the engine will run unstably and the valves may bend.
  • ❌ Reusing tensioner - even if it looks good, its spring loses its elasticity and the chain will sag.
  • ❌ Saving on sealant — if the timing cover is installed without sealant, an oil leak will appear over time.
  • ❌ Incorrect tightening torque - the crankshaft pulley bolt must be tightened firmly 100–120 Nm, otherwise it may unscrew.
  • ❌ They forget to replace the sedative — a worn guide speeds up chain stretching by 2 times.
⚠️ Attention: On Almera Classic with motor QG18DE After replacing the circuit, you must reset the errors P0011 And P0340 using a diagnostic scanner. Otherwise, the engine may not operate correctly even if the marks are set correctly.

Cost of replacing a timing chain at a service center vs doing it yourself

Timing chain replacement price Nissan Almera Classic depends on the region and service station level. On average the prices are:

Service type Cost of work, rub. Cost of spare parts, rub. Total, rub.
Official dealer 25 000–35 000 15,000–20,000 (original) 40 000–55 000
Independent service 12 000–18 000 8,000–12,000 (analogues) 20 000–30 000
On your own 0 8 000–15 000 8 000–15 000

Self-replacement allows you to save up to 50% of the cost, but requires the following tools:

  • 🔧 Crankshaft pulley remover.
  • 🔧 Torque wrench (for tightening the pulley bolt).
  • 🔧 Sealant for timing belt cover.
  • 🔧 Set of heads and extensions.

If you have never done such work, it is better to entrust the replacement to professionals. An error when setting the marks may result in repair of the cylinder head on 50,000–80,000 rubles.

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Replacing the timing chain with Almera Classic pays for itself after 30–50 thousand kilometers by preventing serious breakdowns. Saving on spare parts or labor often leads to a major engine overhaul.

What happens if you don't replace the chain on time?

Ignoring timing chain stretch Nissan Almera Classic is fraught with serious consequences:

  • 💥 Chain jump - even 1 tooth leads to a violation of the valve timing, a drop in power and unstable engine operation.
  • 🔥 Meeting of valves and pistons - on QG18DE This is a guaranteed valve bending and cylinder head repair.
  • 🛑 Open circuit — in this case, the engine will stall and will not start, the chain will need to be replaced + diagnostics for damage.
  • 🔧 Sprocket wear — a stretched chain accelerates wear of the teeth on the camshafts, which will require their replacement.

Cost of repair after a broken or jumped chain:

  • Bend valves — from 30,000 to 60,000 rubles (replacement of valves + grinding in).
  • Cylinder head repair — from 50,000 rubles (if replacement of guide bushings is required).
  • Replacing camshafts - from 20,000 rubles (if the chain has worn out its teeth).

For comparison: timely replacement of a chain costs 15,000–30,000 rubles (including spare parts and labor). Thus, savings on chain replacement can result in costs 3-5 times higher.

FAQ: Frequently asked questions about replacing the timing chain on a Nissan Almera Classic

Is it possible to drive with a stretched chain if there are no errors?

No, you can't. Even if Check Engine does not light, a stretched chain leads to:

  • Loss of power (up to 15–20%).
  • Increased fuel consumption (by 1–2 l/100 km).
  • Risk of overshoot at high speeds.

At the first signs of wear (knocking, unstable idling), the chain must be replaced.

How often should the circuit condition be checked?

It is recommended to check the circuit every 30,000–40,000 km after 100 thousand km. It is enough to remove the valve cover and visually assess the tension. It is also worth listening to extraneous noise when starting the engine.

Is it possible to replace only the chain and leave the old tensioner?

No, the tensioner must be changed along with the chain. Its spring loses its elasticity over time, and even a new chain will sag. This will lead to accelerated wear and risk of jumping.

What oil should I fill in after replacing the chain?

For QG15DE And QG18DE synthetic oil recommended 5W-30 or 5W-40 with permission API SL/CF or SN. Best options:

  • Nissan Strong Save X 5W-30 (original).
  • Liqui Moly Special Tec AA 5W-30.
  • Mobil 1 ESP 5W-30.

The oil should be changed immediately after replacing the chain, as the old oil may contain metal particles from a worn chain.

How long does it take to replace a timing chain?

In the service, work takes 4–6 hours. If you replace it yourself without experience, it may go away 8–12 hours, since you will need to carefully remove the timing cover and install marks.