Replacing the timing chain on a <em>Nissan Almera Classic</em>: when is it needed, how to do it and how much does it cost

Timing chain (timing chain) in Nissan Almera Classic (body N16) is a critical element, the condition of which determines the performance of the engine. Unlike a belt drive, a chain is considered more reliable, but it also has a limited resource. Missing the moment of replacement means taking a risk bent valves, major repairs or complete replacement of the motor.

In this article we will analyze frequency of timing chain replacement on Almera Classic with engines QG15DE (1.5 l) and QG18DE (1.8 l), signs of wear, step-by-step instructions with nuances for self-repair, as well as the cost of work in services. We will place special emphasis on typical replacement mistakes that lead to premature stretching of the new chain or breakage of the tensioner.

When to change the timing chain Nissan Almera Classic: regulations and signs of wear

Official regulations Nissan for Almera Classic (2006–2012) involves replacing the timing chain every 150–200 thousand km. However, this indicator is conditional: in practice, the resource depends on operating conditions, oil quality and driving style. In Russian realities, a chain often requires attention already 100–120 thousand km, especially when:

• 🛢️ Using cheap or fake motor oil (the chain stretches faster due to insufficient lubrication).
• 🚗 Aggressive driving with frequent jerks and high speeds (accelerates wear of the tensioner and damper).
• ❄️ Operation in severe frost conditions (oil thickens, worsening chain lubrication).
• 🔧 Previous low-quality replacement (for example, without replacing the tensioner or using non-original spare parts).

Do not wait for the scheduled mileage if you notice chain wear symptoms:

• 🔊 Metallic ringing or knocking on the timing cover side on a cold engine (especially noticeable during startup).
• 📉 Floating speed at idle speed (the chain skips 1-2 teeth).
• ⚠️ Error P0340 (camshaft position sensor malfunction) - may indicate a phase shift due to a stretched chain.
• 💨 Power Loss and increased fuel consumption (due to poor synchronization of valves and pistons).

⚠️ Attention: If the chain is on Almera Classic stretched to the point where it jumps 3 or more teeth, the engine QG15DE/QG18DE guaranteed to receive valve bend. In this case, repairs will cost 1.5–2 times more than preventive replacement.

Which timing chain to choose: original vs analogues

For Nissan Almera Classic with engines QG15DE And QG18DE Suitable timing chains with part numbers:

Part type	Article	Manufacturer	Notes
Original chain	13028-4M50A	Nissan	Best quality, but high price (from 8,000 rubles).
Analogue (premium)	K015621XS	Iwis (Germany)	An excellent option in terms of price/quality ratio (from RUB 4,500).
Analog (budget)	T42120	Dayco (Italy)	Cheaper (from 3,000 rubles), but the resource is 20–30% lower than the original.
Set (chain + tensioner + dampers)	KT-1015621	Febi (Germany)	Convenient for a complete replacement (from RUB 12,000).

Besides the chain must be replaced:

• 🔧 Chain tensioner (article 13070-4M500 or equivalent HY-1015 from Ajusa).
• 🛡️ Chain dampers (upper and lower, articles 13085-4M500 And 13086-4M500).
• 🔗 Tensioner shoe (article 13080-4M500).
• 🛢️ Timing cover gasket (article 11044-JA00A).

⚠️ Attention: Saving on tensioners or dampers will result in the new chain stretching 2-3 times faster. For example, a worn tensioner does not create the required pressure, and the chain begins to “slap” on the guides, accelerating their destruction.

If your budget is limited, it is better to take set from Febi or Iwis - they include all the necessary details and guarantee a resource no less than the original. Avoid cheap Chinese analogues (for example, Patron or Sat), since their chains often stretch after 30–50 thousand km.

Preparing for replacement: tools and conditions

Replacing the timing chain with Nissan Almera Classic - a labor-intensive process that requires special tool and at least minimal experience in engine repair. If you have never disassembled an engine, it is better to entrust the work to professionals. To replace it yourself you will need:

A special key for fixing camshafts (or homemade from an old timing belt)

Torque wrench (for tightening bolts with a torque of 20–25 Nm and 90–100 Nm)

Socket and extension set (including 27mm socket for crankshaft pulley)

Crankshaft gear puller (or mounting blade)

Sealant for timing case cover gasket (e.g. Loctite 574)

Torx keys T30 and T50 (for removing the timing cover)

Stopper for the flywheel (can be made from an old chisel)

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Also prepare:

• 📸 Camera or phone - to fix the position of marks and parts before disassembly.
• 🧹 Carburetor Cleaner — for washing the timing cover and gears from old oil and dirt.
• 🔦 Bright lamp or flashlight — engine compartment lighting Almera Classic leaves much to be desired.

Working conditions:

• 🚗 The car must be parked flat ground (preferably on a lift or overpass).
• 🔌 Disable negative battery terminalto avoid short circuit.
• 🛠️ Stock up 3–4 hours — haste will lead to errors in the assembly.

Step-by-step instructions for replacing the timing chain

The process of replacing the chain with Nissan Almera Classic can be divided into 5 Key Stages. Follow the instructions strictly in order to avoid mistakes.

1. Removing the timing cover and auxiliary elements

Start by removing:

1. Air filter and air duct pipe.
2. Valve covers (unscrew 8 Torx T30 bolts).
3. Alternator belt and power steering pump (if equipped).
4. Right engine mount (preliminarily support the engine with a jack through a wooden spacer).
5. Timing covers (12 Torx T50 bolts + sealant along the contour).

Be careful with the cover gasket - it often sticks to the block. Pry it off with a plastic spatula to avoid damaging it.

2. Fixing camshafts and crankshaft

This is the most crucial moment. If the marks go astray, the engine QG15DE/QG18DE will receive irreversible damage.

1. Install the piston of the 1st cylinder in TDC (top dead center). To do this:
• Unscrew the spark plug of the 1st cylinder.
• Rotate the crankshaft clockwise (with a 27 mm wrench) until maximum pressure appears in the spark plug hole (you can use a screwdriver as an indicator).
2. Check if the labels match:
• The mark on the crankshaft gear should look up (for 12 hours).
• The marks on the camshaft gears should be opposite each other (at 3 and 9 o'clock).

Secure the camshafts with a special key or a homemade device (for example, from an old timing belt).

Lock the flywheel through the hole in the clutch housing (use a stopper or a screwdriver).

What happens if you don't fix the camshafts?

If the camshafts rotate while the chain is being removed, the valves will push against the pistons, causing them to bend. Even if visual damage is not visible, the engine will operate unstably due to improper valve timing. In 80% of cases of such an error, major repairs are required.

3. Removing the old chain and installing a new one

After commit:

1. Loosen the chain tensioner (unscrew the bolt with a 10 mm wrench).
2. Remove the dampers and tensioner shoe.
3. Carefully remove the chain from the gears without knocking off the marks.
4. Install a new chain, starting with the crankshaft gear, then the camshafts. Make sure the marks stay in place!
5. Install new dampers and tensioner (don't forget recess the tensioner plunger before installation - to do this, press it and secure it with wire).

4. Tension check and assembly

After installing the new chain:

1. Make sure all marks match.
2. Rotate the crankshaft 2 turns clockwise and check that the marks match.
3. If the marks are off, repeat the installation of the chain.
4. Tighten the tensioner to a torque 20 Nm.
5. Apply sealant to the timing cover gasket and install it in place (tighten the bolts crosswise to a torque 10 Nm).

5. Starting the engine and checking

After assembly:

1. Fill with new oil (recommended 5W-30 or 5W-40 from Mobil 1 or Liqui Moly).
2. Start the engine and listen to it idle - there should be no extraneous noise.
3. Check the oil pressure (there should be no warning light on the dashboard).
4. Warm up the engine to operating temperature and repeat checking the marks (on a cold engine, the chain may be slightly tense, and after warming up, it may loosen).

Common mistakes when replacing a timing chain and how to avoid them

Even experienced craftsmen sometimes make mistakes that shorten the life of a new chain or lead to engine failure. Here TOP-5 errors when replaced by Nissan Almera Classic:

• 🔄 Label mismatch after installing the chain. Cause: Incorrect fixation of the camshafts or crankshaft. Consequences: bending of valves.
• 🛠️ Using an old tensioner. Reason: desire to save money. Consequences: the chain stretches 2 times faster.
• 🧴 Saving on sealant for timing cover. Reason: use of cheap sealant. Consequences: oil leakage and dirt getting into the chain.
• 🔧 Incorrect tightening torque timing cover bolts. Reason: tightening by eye. Consequences: deformation of the cover or gasket.
• 🚫 Forgetting to check sedatives. Reason: visually they may look normal, but have microcracks. Consequences: breakage of the damper and jamming of the chain.

To avoid problems:

• 📏 Use torque wrench for all bolts.
• 🔍 Check for sedatives cracks and gouges (even if they are apparently intact).
• 🛢️ Apply sealant thin layer just for the gasket, no excess.
• 🔄 After assembly Check the labels 3 times when the crankshaft rotates.

The cost of replacing a timing chain: prices in services and self-repair

Cost of replacing timing chain Nissan Almera Classic depends on the region, service level and selected spare parts. Below is the approximate price:

Service/Spare part	Cost (RUB)	Notes
Work (chain replacement + tensioner + dampers)	8 000 – 15 000	Includes timing cover removal/installation and gasket replacement.
Original chain Nissan (13028-4M50A)	8 000 – 10 000	Resource 150–200 thousand km.
Kit Febi (chain + tensioner + dampers)	12 000 – 14 000	The best option in terms of price/quality.
Budget set (Dayco or Patron)	5 000 – 7 000	Service life 50–80 thousand km, high risk of stretching.
Timing cover gasket	500 – 1 200	It's better to take the original (11044-JA00A).

Total complete replacement of the timing chain in the service will cost 20,000–35,000 rub. (with original spare parts). If you do your own repairs, you can do it within 10,000–15,000 rub., if you buy high-quality analogues.

Where is it cheaper?

• 🔧 Official dealer - expensive (from 30,000 rubles), but with a guarantee.
• 🏗️ Independent service - optimal (RUB 20,000–25,000).
• 🔨 On your own - is the cheapest, but the risk of errors is high.

Frequently asked questions about replacing the timing chain with Nissan Almera Classic

Is it possible to drive if the timing chain starts knocking?

No! Chain knocking is a sign of critical wear. If the chain jumps 2-3 teeth, the valves will meet the pistons and the engine will get irreversible damage. The maximum that can be done is to carefully drive to the service station (no more than 50 km) at low speeds (up to 2,000 rpm).

How to check chain wear without disassembling the engine?

There are 3 ways:

1. Listen to the engine when it is cold - if the chain is worn out, you will hear metallic ringing in the area of the timing cover.
2. Check that the marks match: remove the valve covers and make sure that the marks on the camshafts match at TDC of the 1st cylinder.
3. Measure the chain stretch: if, with the tensioner tightened, the chain sags by more than 10 mm, it needs to be changed.

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

Absolutely not! The tensioner and guides wear out along with the chain. If you keep the old parts:

• The tensioner will not be able to compensate for the stretch of the new chain.
• Dampeners with wear will accelerate chain wear.
• The risk of a circuit break will increase 3–4 times.

Savings of 2–3 thousand rubles. will turn around repeated replacement after 20–30 thousand km.

How long does a timing chain last after replacement?

The resource of a new chain depends on:

• Quality of spare parts: original or Iwis/Febi — 150–200 thousand km; budget analogues - 50–80 thousand km.
• Operating conditions: with frequent cold starts and aggressive driving, the service life is reduced by 30–40%.
• Oil quality: synthetic 5W-30/5W-40 with replacement interval 10 thousand km prolongs the life of the chain.

If properly replaced and used, the chain will last at least 150 thousand km.

What happens if you don't change the timing chain?

The consequences depend on the degree of wear:

• When slight sprain (up to 5 mm): floating speed, increased fuel consumption, error P0340.
• When strong stretching (5–10 mm): knocking, loss of power, risk of slipping by 1–2 teeth.
• When critical wear (more than 10 mm): chain jumps 3+ teeth → valve bend → major repairs (from RUB 80,000).

In 90% of cases the problem is ignored, the engine QG15DE/QG18DE requires replacing the block head or a complete overhaul.