Timing chain drive on Nissan Almera Classic (N16) is considered more reliable than a belt one, but it also requires attention - especially to the condition chain tensioner. This small part is responsible for the correct tension of the chain, preventing it from sagging, teeth jumping and critical engine breakdowns. Owners Almeri Classic often encounter noise from under the hood when cold or a flashing oil pressure light - the first signs that the tensioner is failing.

In this article we will look at how diagnose tensioner fault without disassembling the engine, which symptoms cannot be ignored, and how to replace the part yourself. We will also compare original spare parts Nissan with analogues from Ajusa, Febi And SWAGso that you can choose the best option in terms of price and quality. We will pay special attention tensioner models with art. 13070-4M200 - it is most often counterfeited on the market, and we will tell you how to distinguish the original.

Signs of a faulty chain tensioner Nissan Almera Classic

Timing chain tensioner on Almera Classic (1.5/1.6 l, engines QG15DE/QG16DE) operates under oil pressure. When the part wears out, it no longer holds the chain in a tensioned state, which leads to characteristic symptoms:

  • 🔊 Metallic knocking or rattling noise when starting the engine cold (disappears 10–30 seconds after warming up). The sound is coming from the timing cover.
  • ⚠️ Oil pressure lamp flashes at idle, although the oil level is normal. This is due to a drop in pressure in the tensioner lubrication system.
  • 🔄 Unstable speed or jerking when moving - the chain can jump 1-2 teeth, throwing off the valve timing.
  • 🛑 The engine stalls after a sudden release of gas or when braking. In severe cases - startup failure.

It is important to distinguish tensioner knocking from knocking hydraulic compensators or worn main bearings. For example, if the noise does not go away after warming up or increases under load, the problem is most likely in the crankshaft bearings. But short knock on startup (1-3 seconds) with 90% probability indicates the tensioner.

⚠️ Attention: If the panel lights up Check Engine with an error P0011 (“Camshaft phase shift”), this is a direct signal of a sagging chain. You cannot drive with such a malfunction - there is a risk of bending the valves if they break!

Diagnostics of the chain tensioner without disassembling the engine

Before removing the valve cover, check the tensioner using indirect methods:

  1. Listen to the engine with a stethoscope (or a wooden stick applied to the ear). The source of the knock must be localized in the area front part of the cylinder head near the camshaft sprocket.
  2. Check oil pressure pressure gauge. If the tensioner is faulty at idle speed it will be lower 0.5 bar.
  3. Inspect the chain through the inspection window (if it is in your modification). Sagging more 10 mm - critical indicator.

For an accurate diagnosis you will need to remove valve cover and visually assess the condition of the chain and tensioner. Please note:

  • 🔗 Chain stretch - if it sags between the sprockets by more than 1 tooth, replacement is required.
  • 🛢️ Oil stains near the tensioner - a sign of wear on the o-ring.
  • 🔧 Tensioner rod play - if he moves his hand freely, the part is faulty.
📊 How often do you check the condition of the timing chain?
  • Every 20 thousand km
  • Once every 50 thousand km
  • Only when noise occurs
  • Never checked

Choosing a chain tensioner: original vs analogues

For Nissan Almera Classic (N16) with engines QG15DE/QG16DE Tensioners with article numbers are suitable:

Part type Article Manufacturer Price, ₽ Features
Original 13070-4M200 Nissan 4 500–6 000 1 year warranty, fully compatible
Analogue 130704M200 Ajusa (Spain) 2 800–3 500 The quality is close to the original, but there are fakes
Analogue 130704M200 Febi (Germany) 3 200–4 000 Good wear resistance, but may be noisy for the first 100 km
Budget 130704M200 SWAG (Germany) 2 000–2 500 Suitable for temporary replacement, resource ~50 thousand km

When choosing, pay attention to:

  • 📦 Packaging - original Nissan has a holographic sticker and serial number.
  • 🔍 Markings on the body - must match the article without unnecessary symbols.
  • 🛠️ Plunger condition — it should move smoothly, without jamming.
⚠️ Attention: There are many fake brands on the market Ajusa with article number 130704M200. The original part has a logo on the plunger and a black plastic cap. In fakes, the cap is gray or missing.
How to distinguish an original Nissan tensioner?

1. Box with a hologram and serial number.

2. The “Nissan” marking and article number are stamped on the body.

3. The plunger is chrome plated, without scratches.

4. A new O-ring (yellow) is included in the kit.

Step-by-step instructions for replacing the chain tensioner

To replace the chain tensioner with Nissan Almera Classic you will need:

  • 🔧 Set of sockets and keys (10 mm, 12 mm, 14 mm).
  • 🔨 Screwdriver with a flat tip.
  • 🛢️ Valve cover sealant (Loctite 574 or equivalent).
  • 🧤 Gloves and rags.

Opening hours: 2–3 hours (no experience required). Difficulty: 3/5.

Drain the oil (at least 2 liters)|Disconnect the battery terminal|Remove the air duct and filter|Disconnect the throttle cable (if it interferes)|Prepare a new valve cover gasket-->

Step 1: Removing the valve cover

Unscrew the 12 cover bolts (head 10 mm) and carefully pry it off with a screwdriver. Be careful - parts of the old gasket may remain under the cover. Clean the surface of the cylinder head from sealant residues with a solvent.

Step 2. Fixing the chain

Rotate the crankshaft clockwise until the marks on the camshaft sprockets and the cylinder head housing align. Secure the chain with wire or a tie so that it does not jump off the sprockets.

Step 3: Replacing the tensioner

Unscrew the two tensioner mounting bolts (12 mm) and remove it. Install the new part, first drowning the plunger (press on it and secure with a pin or wire). After installation, the check must be removed.

Step 4. Assembly

Apply a thin layer of sealant to the valve cover gasket and install it in place. Tighten the bolts crosswise firmly 10 Nm. Fill with new oil and start the engine - the knocking noise should disappear.

💡

Before installing a new tensioner, check the condition of the chain guide (part from art. 13085-4M200). If it is worn, replace it too - this will prevent premature chain wear.

Common replacement mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes that lead to repeated repairs. Here are the most common:

  • 🔧 Loose chain - if you do not stop it before removing the tensioner, it can jump onto the teeth, which will lead to a phase failure.
  • 🛢️ Saving on sealant - cheap sealant starts to leak after 1-2 months, and oil gets into the spark plug wells.
  • 🔩 Retightening the cover bolts - this deforms the aluminum cylinder head and leads to oil leakage.
  • 🚗 Ignoring timing marks — if you do not align the marks on the camshafts, the engine will trip.

To avoid problems:

  1. Always check timing marks after assembly - they must match the marks on the body.
  2. Use torque wrench for tightening bolts (torque 10 Nm for the lid, 25 Nm for tensioner).
  3. After replacement check oil pressure pressure gauge - it should not be lower 1 bar at idle.

1. Condition of the chain (perhaps it is stretched).

2. Chain guide (may be cracked).

3. Oil pressure (below normal - problem in the oil pump).-->

Tensioner service life and breakdown prevention

Chain tensioner resource for Nissan Almera Classic depends on operating conditions:

  • 🚗 City mode (frequent starts, traffic jams) - 80–100 thousand km.
  • 🛣️ Route (uniform loads) - up to 150 thousand km.
  • ❄️ Extreme frosts (below –25°C) - the resource is reduced by 20–30%.

To extend the life of the tensioner:

  • 🛢️ Change the oil every 7–8 thousand km (use 5W-30 or 5W-40 with permission API SN).
  • 🔥 Avoid overheating the engine - at temperatures higher 110°C The oil loses viscosity and the tensioner runs dry.
  • 🚗 Do not accelerate immediately after starting in winter - let the oil warm up and fill the tensioner channels.

Critical point: if the tensioner was already “knocking” and you continued to drive, the chain could stretch unevenly. In this case, even after replacing the tensioner, the chain may need to be replaced after 10–20 thousand km.

FAQ: Frequently asked questions about chain tensioner Nissan Almera Classic

Is it possible to drive with a knocking tensioner?

Short-term (up to 1-2 weeks) - yes, but it’s not worth the risk. If there is severe wear, the chain can jump onto the teeth, which will lead to a collision between the valves and the pistons. If a knock is heard for more than 5 seconds after starting, change the tensioner immediately.

What sealant should I use for the valve cover?

Anaerobic sealants are best: Loctite 574, Permatex Anaerobic Gasket Maker or ABRO 11-AB. Do not use silicone ones - they cannot withstand high temperatures and begin to leak.

Do I need to change the chain along with the tensioner?

Not necessary if the chain is not stretched. Check its slack: if between the camshaft sprockets the chain sags by more than 10 mm, it is better to replace it. Also inspect the links for wear - if they are “sharp”, the chain must be replaced.

Why didn't the knocking go away after replacing the tensioner?

Possible reasons:

  • Defective chain guide (art. 13085-4M200).
  • The chain is stretched and hits the body.
  • The new tensioner is defective (check the plunger).
  • Low oil pressure (clogged oil filter or faulty pump).

Is it possible to replace the tensioner without removing the valve cover?

Technically yes, but it is extremely inconvenient and error-prone. Without visual inspection of the chain, you will not be able to ensure that it is properly tensioned and has not jumped. We recommend removing the cover.