Adjusting valve clearances on Nissan Qashqai - a procedure that many owners put off until the last minute, until the engine begins to “knock” or lose power. Meanwhile, incorrect clearances accelerate wear of the gas distribution mechanism, increase fuel consumption and can lead to serious damage. In this article we will look at why it is so important to monitor clearances and what standards are relevant for different engines. Qashqai (including popular HR16DE, MR20DE and diesel K9K), and how to make the adjustment yourself - with step-by-step photos, videos and a list of necessary tools.
Feature Nissan Qashqai (especially the first generation J10) is that factory clearances often “go away” after 60–80 thousand km, even if the service book indicates an interval of 100 thousand km. This is due to the quality of the fuel, driving style and the characteristics of the valve mechanism materials. We won't convince you to run to a service center - instead, we'll show you how to check the clearances without removing the valve cover (spoiler: it's possible!) and what to do if the engine runs unstable after adjustment.
Why do you need to adjust valve clearances on a Nissan Qashqai?
The gaps between the camshaft cams and valve lifters are needed to compensate for the thermal expansion of the metal. If the gap is too large, the valve will not open fully, resulting in:
- 🔊 Metallic knock on a cold or hot engine (more often heard at idle).
- ⚡ Loss of power due to ineffective filling of the cylinders with the fuel mixture.
- 🔥 Increased fuel consumption (up to 10–15%) and accelerated wear of valve seats.
Too small a gap is no less dangerous: the valve does not close completely, which leads to:
- 💥 Burnout of valves (especially relevant for diesel engines) Qashqai with turbine).
- 🔥 Overheating of the block head and risk of deformation.
- 🚗 Unstable engine operation at idle (“triple”).
On Nissan Qashqai J11 (2014–2021) with engines MR20DD (2.0 l) system for adjusting gaps using hydraulic compensators, but there are nuances here: over time, compensators can “stick” due to low-quality oil, which imitates the symptoms of incorrect gaps. This can only be diagnosed after disassembly.
- Every 60 thousand km
- Only when there's a knock
- Never checked
- I do it according to the regulations (100 thousand km)
Valve clearance standards for different Nissan Qashqai engines
Clearance standards depend on the engine type, year of manufacture and even the delivery market (European and Japanese versions may differ). Below is a current table for the most common motors Qashqai:
| Engine | Type | Intake valve (cold engine) | Exhaust valve (cold engine) | Notes |
|---|---|---|---|---|
HR16DE (1.6 l, petrol) |
J10 (2007–2013), J11 (2014–2021) | 0.24–0.30 mm | 0.28–0.34 mm | The clearances are the same for both generations, but on the J11, wear on the pushers is more common. |
MR20DE (2.0 l, petrol) |
J10, J11 | 0.26–0.32 mm | 0.30–0.36 mm | On engines with mileage >150 thousand km, wear of the camshafts is possible. |
MR20DD (2.0 l, petrol) |
J11 (since 2014) | Hydraulic compensators | Hydraulic compensators | No adjustment is required, but diagnostics of compensators is required every 80 thousand km. |
K9K (1.5 l, diesel) |
J10, J11 | 0.20–0.25 mm | 0.30–0.35 mm | Critical to the quality of oil! When using low-quality lubricant, the gaps “go away” faster. |
Important: For engines HR16DE And MR20DE after 2017, clearance standards may differ by ±0.02 mm - check by VIN code in the official manual.
If your Qashqai equipped with gas equipment, it is recommended to keep the outlet clearances closer to the upper limit of the norm (for example, 0.34–0.36 mm for HR16DE), since gas fuel increases the combustion temperature.
Before making adjustments, be sure to check the engine temperature - it should not be higher than 20°C. If the engine is warm, add 0.02–0.03 mm to the clearance standards to compensate for thermal expansion.
Tools and materials for adjustment
To independently adjust the gaps on Nissan Qashqai you will need:
- 🔧 Set of probes (necessarily in increments of 0.01 mm, for example, Hazet 181-1 or Jonnesway).
- 🔨 Special wrench for adjusting bolts (for
HR16DE/MR20DE- size 10 mm). - 🔩 Locknuts and washers (if you are planning a replacement, take the original Nissan 13270-4M500).
- 🛠️ Torque wrench (for tightening the valve cover with a torque of 8–10 Nm).
- 🧲 Magnetic holder (so as not to lose washers when replacing).
- 🧴 Valve cover sealant (For example, Loctite 574 or Permatex Ultra Black).
For diesel K9K Additionally you will need:
- 🔧 Special camshaft retainer (For example, Laser 3382).
- 🛑 Adapter for cranking (to avoid damage to the position sensor).
The cost of original washers for adjustment is from 300 to 600 rubles per piece, but you can use analogues from Nipparts or Febi (they are 30–40% cheaper). The main thing is to check the thickness with a micrometer, since even new washers can have an error of ±0.01 mm.
Where can I buy tools cheaper?
The best prices for feeler gauges and wrenches for valve adjustment are usually on AliExpress (search for “valve feeler gauge set”) or in stores like “VseInstrumenty.ru”. It is cheaper to order original Nissan washers through Exist.ru or auto dismantling shops.
Step-by-step instructions for adjusting gaps
The adjustment process is the same for most gasoline engines Qashqai (HR16DE, MR20DE). For diesel K9K There are some nuances - we will look at them at the end of the section.
- Preparation:
- Remove the plastic engine cover and air duct.
- Disconnect the negative terminal of the battery.
- Drain the oil (optional, but recommended for cleanliness).
Unscrew the 10 cover bolts (tightening torque for reassembly is 8 Nm). Be careful with the rubber seal: if it becomes dull or cracked, replace it (Nissan 11040-4M500).
Turn the crankshaft clockwise (using the pulley bolt or starter) until the marks on the camshaft and bearing housing align. For HR16DE the label must face up to MR20DE - to the right.
Insert a feeler gauge between the camshaft cam and the tappet. It should go in with slight effort. If the 0.25 mm feeler gauge passes freely, but the 0.26 mm feeler gauge does not, the gap is 0.25 mm.
If the clearance is not normal:
- Loosen the locknut 1–2 turns.
- Rotate the adjusting bolt while checking the gap with a feeler gauge.
- Tighten the locknut (torque - 12–15 Nm) and recheck the gap.
For diesel K9K the process is more complicated:
- 🔧 Requires a camshaft lock to prevent turning.
- 🔩 The gaps are regulated by selecting washers (not bolts, as on gasoline engines).
- ⚠️ After adjustment, be sure to check the oil pressure — on diesel engines, incorrect clearances can lead to oil starvation.
Cool the engine to 20°C|Prepare dipsticks and wrenches|Take a photo of the location of the TDC marks|Check for new washers/gaskets|Turn off the fuel pump (for safety)-->
If the engine runs unstable after adjustment, check:
- 🔧 Correct installation of TDC marks (a common mistake is jumping by 1 tooth).
- 🧲 Tightening the camshaft bolts (torque for
HR16DE- 80–90 Nm). - 🛠️ Condition of injector sealing rings (on diesel engines).
On engines MR20DE after the 2013 release, the TDC marks may be hidden under a plastic cover - it must be carefully removed by prying it off with a screwdriver.
Typical mistakes when adjusting and how to avoid them
Even experienced craftsmen sometimes make mistakes that lead to repeated disassembly of the engine. Here are the most common:
⚠️ Attention: If after adjustment a knock appears on a hot engine, most likely you set the clearances according to the standards for a cold engine, but did not take into account its warming up during operation. In this case, you need to recheck the gaps 10–15 minutes after starting.
- 🔧 Incorrect cylinder adjustment order.
On
HR16DEAndMR20DEThe cylinders are adjusted in the order 1–3–4–2. If you break the sequence, the TDC marks will be confused and the clearances will be incorrect. - 🧲 Using worn out probes.
The probes wear out over time and their thickness decreases. Check them with a micrometer before work!
- 🔩 Retightening the locknuts.
This leads to deformation of the threads in the block head. Tightening torque: no more than 15 Nm.
- 🛠️ Ignoring post-build checks.
Always start the engine and listen to it run at different speeds. A knocking sound at 2000–2500 rpm indicates an adjustment error.
Another typical problem is mismatch of TDC marks after assembly. To avoid this:
- Before removing the timing belt, take photographs of the position of all marks.
- Use a crankshaft stopper (eg Laser 3380).
- Check the marks not only on the camshaft, but also on the flywheel (through the inspection window in the clutch housing).
On diesel K9K people often forget about checking clearances on both camshafts (inlet and outlet). If only one is adjusted, the engine will run unsteadily.
When to contact service: signs of critical problems
Not all valve problems can be solved by adjustment. If you notice the following symptoms, it is better to consult a specialist:
- 🔥 Smoke from the exhaust pipe is blue or white (indicates a burnt valve or worn oil seals).
- 💥 Constant detonation even after adjusting the gaps (may be caused by carbon deposits in the combustion chamber or a malfunction of the knock sensor).
- 🛑 Compression drop in one or more cylinders (diagnostics using a compression meter is required).
- 🔊 Metal scraping when starting (the camshaft or pushers may be worn).
The cost of diagnostics in the service ranges from 1,500 to 3,000 rubles, but it can save you from major repairs. For example, on Nissan Qashqai J10 With a mileage of more than 200 thousand km, valve seals often wear out, which leads to oil leaks. Replacing them costs 8–12 thousand rubles, while adjusting the gaps costs 3–5 thousand rubles.
⚠️ Attention: If, after adjusting the gaps, the engine begins to “trouble” or an error appears P0300 (misfire), immediately return to factory settings and check compression. The valve may have burned out or the hydraulic compensator may have jammed.
For diesel K9K critical turbine condition. If, after adjustment, black smoke appears from the exhaust, check the boost pressure - perhaps the turbine is “driving” oil into the intercooler due to worn seals.
Frequently asked questions about adjusting clearances on Nissan Qashqai
Is it possible to adjust the clearances without removing the valve cover?
Theoretically yes, but only for testing. To make precise adjustments, the cover must be removed. However, on HR16DE You can approximately estimate the intake valve clearances through the spark plug hole using a thin feeler gauge (0.20–0.25 mm). But this will not replace a full procedure.
How often do you need to adjust the clearances on a Qashqai with LPG?
On cars with gas equipment, the clearances are checked every 40–50 thousand km, since gas increases the combustion temperature and accelerates valve wear. This is especially true for exhaust valves - it is recommended to keep their clearances closer to the upper limit of the norm (for example, 0.34 mm instead of 0.30 mm for HR16DE).
What should I do if, after adjustment, a knocking sound appears when cold?
Most likely, the gaps are set too large. Check them again on a cold engine (temperature no higher than 20°C). If the knocking noise persists, the following reasons are possible:
- Worn tappets or camshaft cams.
- Improperly tightened locknuts (overtightened or undertightened).
- Oil getting into the combustion chamber (check the oil seals).
Is it possible to use non-original washers for adjustment?
Yes, but with reservations. Analogues from Nipparts, Febi or SWAG suitable if their thickness is checked with a micrometer. Cheap washers without markings can have an error of up to ±0.03 mm, which will negate all adjustment. Original washers Nissan (article 13270-4M500) are guaranteed to be accurate, but are more expensive.
Do I need to change the oil after adjusting the clearances?
Necessary if you removed the valve cover or worked on the timing belt. During the adjustment process, chips or dirt may get into the oil. Use oil with viscosity 5W-30 or 5W-40 (for K9K - only 5W-30 with permission Renault RN0710). Volume for HR16DE — 4.3 l, for MR20DE — 4.8 l.