Engine F8 - one of the most common engines in the line Nissan Vanette, but its maintenance often raises questions among owners. This is especially true for the timing belt replacement procedure, where it is critically important to correctly align timing marks. A mistake of even one tooth can lead to serious consequences: from loss of power to valves meeting pistons and major repairs.
In this article we will figure out where the timing marks are located on F8, how to set them correctly, what tools will be needed and what to pay attention to when working. The material will be useful to both beginners and experienced car owners who want to avoid common mistakes. All recommendations are based on factory manuals and the experience of craftsmen specializing in Nissan.
What are timing marks and why is it important to set them correctly?
Timing marks are special marks on the crankshaft pulleys, camshaft and engine housing, which ensure synchronous operation of the valve mechanism and piston group. On the engine F8 (and its modifications F8A, F8B) a single camshaft system is used (SOHC), which simplifies the process of setting marks compared to twin-shaft motors.
If the marks are not aligned correctly, imbalance of valve timing. This leads to:
- 🔥 Detonation - the fuel ignites prematurely, which destroys the pistons and valves.
- 🚗 Loss of power — the engine “does not pull”, fuel consumption increases.
- 💥 Impact of valves on pistons - the most serious consequence requiring major repairs.
On Nissan Vanette with motor F8 Timing timing marks are easier to set than on modern engines with a variable phase system (VVT), but there are some nuances here. For example, on some engine versions, the mark on the flywheel may be faintly visible due to corrosion or paint.
Before starting work, clean the pulleys and housing from dirt - this will help you clearly see the marks and avoid mistakes.
Where are the timing marks on the F8 engine?
On the engine F8 The marks are located in three key places:
- Crankshaft pulley — a mark in the form of a dot or marks on the ring gear, aligned with the protrusion on the front engine cover.
- Camshaft pulley - a label in the form of a letter
Tor risks, is combined with the protrusion on the rear timing cover. - Flywheel — the mark on the flywheel (visible through the inspection window on the gearbox) must coincide with the pointer on the housing.
Important: on some versions Vanette (for example, with an automatic transmission), the inspection window for the flywheel can be closed with a plug. In this case, you will have to remove the starter or use a mirror to control the position of the mark.
| element | Label type | Where to look | Photo/diagram |
|---|---|---|---|
| Crankshaft | Point or risk | On the toothed pulley, next to the 20th tooth | 📷 |
| Camshaft | Letter T or risk |
On the pulley, next to the mount | 📷 |
| Flywheel | Risk or recess | Through the viewing window at the checkpoint | 📷 |
In practice, many owners Vanette encounter a problem: the mark on the flywheel may not be visible due to carbon deposits or corrosion. In this case, a flashlight or cleaning the surface with fine sandpaper will help.
- Special kit for timing belt
- Universal wrenches and sockets
- Homemade devices
- I contact the service
Preparing to replace the timing belt: tools and safety precautions
Before you start work, prepare everything you need. To replace the timing belt with F8 you will need:
- 🔧 A set of sockets and keys (necessarily the head on
19for the crankshaft pulley). - 🔩 Special key for the tension roller (or a suitable analogue).
- 📏 Feeler gauge for checking belt tension (thickness
0.3–0.5 mm). - 🔦 Flashlight or lamp to illuminate marks.
- 🧴 Sealant for installing the front cover (for example, Loctite 574).
Security measures:
- ⚠️ Disconnect the negative terminal of the battery to avoid short circuit.
- ⚠️ Do not turn the crankshaft counterclockwise - this may cause the belt to come off.
- ⚠️ If the engine has been turned off recently, wait until it cools down - the oil temperature in the cylinder head may exceed
80°C.
⚠️ Attention: On some Nissan Vanette With an air conditioner, you will have to remove the compressor to gain access to the lower pulley. Don't forget to bleed off the freon before doing this!
It is also recommended to purchase a new timing belt, rollers and seals in advance. For F8 original parts fit Nissan (belt number - 13028-4M000) or analogues from Gates, Contitech, Dayco.
☑️ Preparing to replace the timing belt
Step-by-step instructions: how to set timing marks on F8
Now let's move on to the most important thing - setting labels. Follow the instructions strictly step by step:
Step 1. Installing the crankshaft at TDC.
- Remove the upper timing cover (4 wrench bolts
10). - Turn the crankshaft clockwise (by the pulley bolt) until the mark on the flywheel aligns with the indicator in the inspection window.
- Make sure the mark on the camshaft pulley (
T) matches the protrusion on the back cover.
Step 2. Fixing the camshaft.
Use a special lock (or a suitable metal rod) to lock the camshaft in this position. This will prevent it from turning when the belt is tensioned.
Step 3: Install a new belt.
- Place the belt on the crankshaft pulley, then on the pump and camshaft (observe the direction of rotation indicated by the arrows on the belt).
- Tension the belt using the roller by turning it counterclockwise. Optimal tension - deflection
5–7 mmwhen pressed between the pulleys. - Tighten the tension roller bolt to torque
40–45 Nm.
Step 4. Checking the marks.
Rotate the crankshaft 2 full turns and make sure that all marks match. If at least one mark is gone, the procedure will have to be repeated.
What if the labels don't match after scrolling?
If after two revolutions the marks are off, it means the belt is too tight or too loose. Loosen the tension roller, adjust the tension and check again. Also check to see if the belt has slipped off one of the pulleys.
Critical point: on an F8 engine, the mark on the flywheel must coincide with the pointer in the gearbox window only in the TDC position of the 1st cylinder. If the mark goes 180°, this is TDC of the 4th cylinder - the belt is installed incorrectly!
Typical mistakes when setting timing marks on F8
Even experienced craftsmen sometimes make mistakes. Here are the most common:
- 🔄 Scrolling the crankshaft in the opposite direction - this can lead to the belt coming off the pulleys.
- 📏 Incorrect belt tension - too weak leads to slipping, too strong - to accelerated wear of the bearings.
- 🔧 Ignoring the mark on the flywheel - many people check only the crankshaft and camshaft pulleys, forgetting about the flywheel.
- 🛠️ Use of worn rollers - even a new belt will quickly become unusable if the rollers have play.
One of the most insidious mistakes is incorrect phase installation for one tooth. In this case, the engine will work, but intermittently: the speed fluctuates, popping noises are heard in the exhaust system. This can only be diagnosed using computer diagnostics or a strobe light.
⚠️ Attention: If after replacing the timing belt the engine does not start or runs with strong vibration, stop trying to start immediately! This is a sign that the marks are not set correctly and further running may damage the valves.
Another common problem is oil getting on the belt. If the crankshaft or camshaft seals leak, the belt will quickly break down. Before installing a new belt, be sure to check the condition of the seals and replace them if necessary.
When to change the timing belt on a Nissan Vanette with an F8 engine
The manufacturer recommends replacing the timing belt with F8 every 60,000 km or once every 4–5 years, whichever comes first. However, these periods may be reduced if:
- 🌡️ Operation in high temperatures (for example, in the southern regions).
- 🚗 Frequent off-road trips or in traffic jams.
- 💧 Oil or antifreeze gets on the belt.
Signs that the timing belt needs replacing:
- 🔊 Extraneous noise (creaking, whistling) from the timing drive.
- 🔧 Cracks, delamination or wear of teeth on the belt.
- 📉 Decrease in engine power, unstable operation at idle.
If you purchased Nissan Vanette If you have a used car and don’t know when the belt was last changed, it’s better to play it safe and replace it right away. Cost of belt and rollers (~3 000–5 000 ₽) is not comparable with the costs of repairing an engine after a break.
Even if the belt looks fine, the rollers and pump wear out faster. It is recommended to replace them together with the belt to avoid premature breakage.
Tips for servicing the timing belt after replacing the belt
To extend the life of your new timing belt, follow these guidelines:
- 🔧 Check the belt tension every
10,000 km- it may weaken over time. - 💧 Monitor the level and condition of the oil - if it gets on the belt, it reduces its resource by 2-3 times.
- 🌡️ Avoid overheating the engine - high temperatures accelerate wear of the belt and rollers.
- 🚗 Try not to allow the engine to run for long periods of time at high speeds (above
4,000 rpm).
It is also useful to keep a record of the mileage and date of belt replacement. This will help you avoid missing your next service interval. If you frequently drive off-road or in difficult conditions, reduce the replacement interval to 50,000 km.
Some owners Vanette install metal timing belt protection. This is important if you often drive on dirt roads - the protection will prevent dirt and stones from getting on the belt.
FAQ: Frequently asked questions about timing marks on the Nissan Vanette F8
Is it possible to set timing marks on the F8 without special tools?
Yes, but it will require more care. Instead of a camshaft clamp, you can use a suitable bolt or even a screwdriver inserted into the pulley hole. However, the risk of knocking down the marks is higher. To tension the belt, you can use a spring scale instead of a torque wrench, but this will not add accuracy.
What happens if the timing belt jumps 1 tooth?
On the engine F8 a jump of 1 tooth usually does not lead to the valves meeting the pistons, but the valve timing is confused. This manifests itself as loss of power, unstable idling, and increased fuel consumption. In the long term, this can lead to overheating and wear of engine parts.
How can I check if the marks are installed correctly without removing the cover?
You can indirectly assess the correctness of the installation by the operation of the engine: it should start easily, run smoothly at all speeds, without vibrations or pops. You can also use a strobe light to check the ignition timing. However, the most reliable way is to remove the top cover and visually verify that the marks match.
Which timing belt replacements are suitable for the F8?
In addition to the original belt Nissan (13028-4M000), analogues have proven themselves well:
- Gates —
T274or5536XS(complete with rollers). - Contitech —
CT1015. - Dayco —
94089. - Bosch —
1 987 949 565.
When choosing, pay attention to the number of teeth - for F8 need 113 teeth.
Do I need to change the pump when replacing the timing belt?
Yes, this is highly recommended. Pump on F8 is driven by the timing belt, and its jamming can lead to belt breakage. Pump cost (~2 000 ₽) is not commensurate with the risk of engine repair. Average pump life - 80,000–100,000 km, but it may fail earlier.