How to replace the valve cover gasket on a Nissan Almera G15 yourself: detailed instructions

Replacing the valve cover gasket with Nissan Almera G15 - a task that every owner of this car faces sooner or later. Even with careful use, the rubber gasket loses its elasticity over time, becomes dull and begins to leak oil. If you notice traces of oil on the cylinder block, a characteristic smell of burnt oil from under the hood, or a drop in the oil level without visible leaks, most likely the problem is in the valve cover gasket.

Car services charge from 3 to 6 thousand rubles for this work (depending on the region), but if you have a minimum set of tools and patience, you can do it yourself. In this article we will look at step-by-step instructions with photos, we’ll tell you about typical mistakes when replacing, give recommendations on choosing spare parts and reveal a few professional secrets that will save your time and nerves.

When do you need to change the valve cover gasket on Almera G15?

Manufacturer Nissan does not establish strict regulations for replacing the valve cover gasket - this is a consumable that changes due to wear. However, there are several signs that indicate the need for replacement:

• 🔴 Oil stains on the cylinder block or cylinder head (especially in the valve cover area). On Almera G15 with engine HR15DE this most often appears after 80–100 thousand kilometers.
• 🔥 Burnt oil smell from under the hood, which intensifies when the engine warms up. This happens when oil gets into the exhaust manifold.
• 🛢️ Constant drop in oil level no visible leaks under the car. If you add oil more often than once every 2–3 thousand km, this is a reason to check the gasket.
• 🔧 Oiling the spark plugs. On Almera G15 this may occur due to oil leaking through the gasket into the spark plug wells.

Average life of the original valve cover gasket per Nissan Almera G15 — 100–120 thousand km. However, if the car is operated under difficult conditions (frequent overheating, aggressive driving, low-quality oil), the gasket may fail after 60–80 thousand km. The use of oils with a high content of additives, which corrode the rubber, also accelerates gasket wear.

⚠️ Attention! If you ignore oil leakage through the valve cover gasket, over time this can lead to oil getting into the combustion chambers, coking of the valves and even breakdown of the cylinder head gasket. On Almera G15 with engine HR15DE this is especially critical due to the compact design of the motor.

Which valve cover gasket should I choose for Nissan Almera G15?

There are several options for gaskets on the market. Nissan Almera G15 (2012–2019), and their quality varies greatly. Original gasket from Nissan has an article number 11044-ED00A (or 11044-ED01A for restyled models). It is made of heat-resistant rubber and is designed for a long service life, but its price can reach 2–3 thousand rubles.

If you are looking for a more budget option, you can consider analogues from trusted manufacturers:

Manufacturer	Article	Price (approximate)	Features
Nissan (original)	11044-ED00A	2 000–3 000 ₽	Soft rubber, precise geometry, long service life
Elring	725.170	800–1 200 ₽	Good quality, but may be stiffer than the original
Victor Reinz	71-36990-00	900–1 300 ₽	Resistant to high temperatures, recommended for turbocharged engines
Corteco	23038300	600–900 ₽	Budget option, but may require replacement ahead of schedule
Ajusa	13144200	700–1 000 ₽	Soft rubber, but sometimes there are problems with fit

When choosing a gasket, pay attention to material: quality gaskets are made from ACM (polyacrylate rubber) or FPM (fluororubber), which are resistant to high temperatures and oil. Cheap gaskets made from ordinary rubber quickly become tanned and begin to leak oil.

Also check the package contents: some sets additionally include O-rings for valve cover bolts (article 11045-ED00A). It is also recommended to replace them, as over time they lose their elasticity and can cause leaks.

Tools and materials for replacing the valve cover gasket

To replace the gasket yourself Nissan Almera G15 you will need the following set of tools and materials:

• 🔧 Socket wrenches or 10 mm and 12 mm sockets (for unscrewing the valve cover bolts).
• 🔩 Torque wrench (preferably, but not required). Valve cover bolts tightening torque: 8–10 Nm.
• 🧤 Rubber gloves and rags (the work is dirty, the oil is difficult to wash off).
• 🧴 Carburetor cleaner or gasoline (to clean surfaces before installing a new gasket).
• 🔨 Plastic spatula or pick (for carefully prying off the old gasket).
• 🛠️ Sealant (optional, but recommended for reliability). Will do Loctite 574 or Permatex Ultra Black.
• 🔋 New valve cover gasket (see article in the previous section).
• 🔄 New o-rings for bolts (if included with a gasket or purchased separately).

If you are planning to replace the gasket for the first time, we also recommend preparing flashlight (lighting in the engine compartment Almera G15 leaves much to be desired) and magnetic screwdriver (so as not to drop the bolts into the engine).

⚠️ Attention! Do not use metal scrapers or knives to clean the surfaces of the cylinder head and valve cover! Even minor scratches can cause the new gasket to not fit tightly and cause repeated leaks. For cleaning, use only plastic or wooden tools.

Disconnect the negative terminal of the battery|Remove the air filter and pipes that interfere with access|Prepare a rag to catch the oil|Check that you have all the tools from the list|Take a photo of the location of the pipes and connectors before removing-->

Step-by-step instructions for replacing the valve cover gasket

The process of replacing the gasket Nissan Almera G15 with engine HR15DE takes about 2–3 hours for the first replacement and 1–1.5 hours with experience. Follow the instructions carefully to avoid mistakes.

Step 1: Preparing the car

Park the car on a level surface, apply the handbrake and allow the engine to cool (working on a hot engine is dangerous due to the risk of burns and gasket deformation). Open the hood and disconnect the negative terminal of the batteryto avoid short circuits when working with electrical connectors.

Step 2: Removing Interfering Elements

To access the valve cover it is necessary to remove:

• 🔄 Air filter with the housing (unscrew the 4 10 mm bolts and disconnect the pipe).
• 🔌 Camshaft position sensor connector (gently press the latch and disconnect).
• 🔗 Accelerator cable (on a manual transmission) or throttle valve connector (on an automatic transmission).
• 🔧 Ignition coil bracket (4 bolts x 10 mm).

On Almera G15 can also interfere crankcase ventilation pipe — it must be removed by first loosening the clamps. We advise you to take photographs of the location of all pipes and connectors so as not to confuse them during reassembly.

Step 3: Removing the Valve Cover

Valve cover on HR15DE fastened 15 bolts under the head by 10 mm. Unscrew them in reverse order (from the edges to the center) to avoid deformation of the lid. Unscrew the last bolt carefully - oil may accumulate under it.

After removing the bolts, pry off the cover with a plastic spatula (it may “stick” to the sealant). Be prepared for some of the oil to spill out - place a rag in advance. Remove the old gasket completely, including the remaining sealant on the cylinder head and cover.

Step 4: Cleaning Surfaces

This is the most important stage! If traces of old sealant or oil remain on the surfaces of the cylinder head or valve cover, a new gasket will not provide a tight seal. Use carburetor cleaner and a rag to thoroughly clean:

• 🔧 Landing surface on cylinder head.
• 🔧 Inner side valve cover (especially the groove for the gasket).
• 🔧 Threaded holes for bolts (blow them with compressed air if you have a compressor).

Step 5: Installing a New Gasket

Before installing a new gasket, check it for defects (ruptures, unevenness). If the gasket comes with self-adhesive layer, the protective film must be removed immediately before installation.

Apply a thin layer of sealant (Loctite 574 or similar) to gasket angles and joints (do not overdo it - excess sealant may get into the oil channels!). Place the gasket in the groove of the valve cover, making sure that it lies flat and without distortion.

Step 6: Reassembly

Reinstall the valve cover and tighten the bolts sequences from the center to the edges. Pull them in 2–3 approaches:

1. First pass - torque 5 Nm.
2. Second pass - torque 8–10 Nm (final).

If you don't have a torque wrench, tighten the bolts by hand with moderate force - overtightening will lead to deformation of the cover!

After assembly, connect all connectors and pipes, reinstall the air filter and ignition coils. Start the engine and check for oil leaks. For the first 100–200 km, monitor the oil level - small leaks are possible if the sealant has not completely polymerized.

Common mistakes when replacing a valve cover gasket

Even experienced motorists sometimes make mistakes that lead to repeated leaks or more serious problems. Here are the most common ones:

• 🔧 Using old sealant. If there are traces of old sealant on the surfaces, the new gasket will not be sealed. Always clean surfaces down to bare metal.
• 🔩 Uneven bolt tightening. If you tighten the bolts crosswise or with different forces, the cover will deform and the gasket will begin to leak oil.
• 🛢️ Saving on gasket. Cheap gaskets made from low-quality rubber become tanned after 20–30 thousand km. It’s better to pay once for the original or a proven analogue.
• 🔥 Working on a hot engine. When heated, aluminum expands, and after cooling, the gasket may “sag,” which will lead to leaks.
• 🔧 Ignoring bolt o-rings. If the O-rings under the bolts are not replaced, oil will leak through the threaded holes.

Another common mistake is using too much sealant. Excess sealant can get into the oil passages and clog them, which will lead to oil starvation of the engine. Apply sealant only on the corners of the gasket and joints, in a thin layer.

⚠️ Attention! On Nissan Almera G15 with engine HR15DE there is one feature: it is installed in the valve cover oil separator (separator), which becomes clogged over time. If, when replacing the gasket, you notice that the oil is foaming heavily or white smoke is coming from the crankcase ventilation system, the separator needs to be washed or replaced (part number 11080-ED00A).

What should I do if after replacement the gasket leaks again?

If after replacement the gasket continues to leak oil, check:

1. **Evenness of the cover fit** - perhaps it was caused by overtightening of the bolts.

2. **Quality of the gasket** - cheap analogues may be defective.

3. **Cleanliness of surfaces** - even small particles of dirt or old sealant will disrupt the seal.

4. **Bolt Condition** - If the threads are damaged, the cover will not press evenly.

In extreme cases, you will have to grind the surface of the cylinder head or buy a new valve cover.

How much does it cost to replace a valve cover gasket at a service center?

If you are not confident in your abilities or do not want to waste time, you can contact a car service. Cost of labor to replace the valve cover gasket Nissan Almera G15 varies depending on region and service level:

Service type	Cost of work (₽)	Cost with spare parts (₽)	Lead time
Official dealer Nissan	4 000–6 000	6,000–9,000 (with original gasket)	3–4 hours
Specialized service for Nissan	2 500–4 000	4 000–6 000	2–3 hours
Multi-brand car service	2 000–3 500	3 000–5 000	2–3 hours
Garage craftsmen	1 500–2 500	2 500–4 000	2–4 hours

Is it worth overpaying for official service? If your Almera G15 is under warranty, then yes - otherwise you may lose the warranty. In other cases, it is enough to contact a trusted service with good reviews. The main thing is to check what kind of sealant they use (some services save money and apply cheap silicone, which peels off quickly).

If you decide to change the gasket yourself, your costs will be limited to the cost of spare parts (800–3,000 rubles) and sealant (200–500 rubles). Thus, the savings will be from 1,500 to 6,000 ₽ depending on the region.

How to extend the life of a new gasket?

To ensure that the new valve cover gasket is on Nissan Almera G15 lasts as long as possible, follow these recommendations:

• 🔧 Use quality oil. Synthetic oils with a low content of aggressive additives (for example, Mobil 1 5W-30 or Liqui Moly Special Tec AA 5W-30) have less impact on the rubber.
• 🔥 Avoid engine overheating. At temperatures above 120°C, the gasket rubber begins to degrade at an accelerated rate.
• 🛢️ Monitor the oil level. Excess oil increases pressure in the system and can push out the gasket.
• 🔧 Change your oil on time. Contaminated oil contains abrasive particles that accelerate gasket wear.
• 🔩 Check the condition of the crankcase ventilation. A clogged oil separator increases the pressure in the system, which leads to the gasket being squeezed out.

It is also recommended that once every 10–15 thousand km you wipe the valve cover and its junction with the cylinder head with a rag soaked in cleaner. This will help you notice the beginning of a leak in time and take action.

If you live in a region with sudden temperature changes (for example, from -30°C in winter to +30°C in summer), the gasket will wear out faster. In this case, you might consider installing Fluoro rubber (FPM) gaskets, which better withstands temperature loads.

Frequently asked questions (FAQ)

Is it possible to drive with a leaking valve cover gasket?

In the short term, yes, but it is fraught with consequences. Oil entering the exhaust manifold may ignite. In addition, a constant drop in oil level leads to oil starvation of the engine, which reduces its service life. On Almera G15 with engine HR15DE this is especially dangerous due to the compact design of the motor and high speeds.

Do I need to use sealant when replacing the gasket?

Required - but only at joints and corners. Most gaskets for Almera G15 They come with a self-adhesive layer, but it does not provide 100% tightness. Sealant (Loctite 574 or Permatex Ultra Black) is applied in a thin layer to problem areas. Avoid silicone-based sealants - they do not hold temperature well.

What happens if you overtighten the valve cover bolts?

Overtightening the bolts leads to deformation of the aluminum valve cover. As a result, the gasket will not fit evenly and oil will begin to leak around the edges. In the worst case, the cover may crack and will have to be replaced (part number 11040-ED00A, price ~5,000 ₽). Always use a torque wrench or tighten the bolts with the same torque by hand.

Is it possible to wash the valve cover in gasoline or solvent?

Yes, but with caution. Gasoline or carburetor cleaner (ABRO CC-220) remove oil and old sealant well, but do not keep the lid in the solvent for too long - this may damage its coating. After cleaning, wipe the cover with a dry cloth and check for any lint or dirt remaining on it.

How often should you check your valve cover gasket?

It is recommended to inspect the junction of the valve cover and the cylinder head at each oil change (every 10–15 thousand km). Pay attention to traces of oil, drips or discoloration of the gasket rubber. If the gasket becomes hard to the touch, it is time to change it, even if there are no visible leaks.