Replacing spark plugs on a Mitsubishi Lancer 10 is a standard procedure that is carried out every two years or when the mileage is 60 thousand km. (iridium candles - 90 thousand km).
But due to the fact that in most cases the quality of gasoline leaves much to be desired, it is recommended to change them more often - after accumulating a mileage of 30 thousand km. The plugs can be replaced at a service center or by yourself. It is not a complicated procedure, it only takes a few minutes.
But if you are not a specialist or you do not have the necessary tools, then it is easier to turn to professionals.
Which parts to choose - original or not original
Many Lancer 10 owners are wondering which candles to put on their car - the more expensive original ones or the cheaper ones that are not original. It may seem that native parts must necessarily be better, but this is not entirely true. In fact, in most cases, original spark plugs are manufactured by the same companies as non-original ones.
The well-known Japanese manufacturer NGK supplies spark plugs to many brands, including Mitsubishi. That is, there is no difference between a spare part offered by this company and any others with the same marking. The inflated price is associated with the group's pricing policy and warranty costs. In fact, non-original candles are the same original ones only without a logo on the package.
On the other hand, there are very cheap Chinese-made candles. It is better not to use such parts at all, since their quality is lame. The best option is candles made by serious companies such as NGK, BOSCH.
Where can I find spare parts
You can find spark plugs for the Lancer X at the warranty service center or service station. Experts will quickly tell you what kind of candles you need and help with installation. But if you decide to independently choose parts for your car, then you can search the Internet.
In order to quickly find the required spare part, you will need to find out its OEM number. The original market number of the product is a code that identifies each specific part. An OEM number is made up of a combination of letters and numbers. Each manufacturer has its own product numbering system.
There are many spare parts catalogs on the Internet. Going into one of them, you need to enter the OEM number in the search field and you will immediately get a list of all the options.
Thus, you can compare candles by cost and choose from the proposed manufacturers. Similarly, you can find the parts you need using the VIN code (body number) of the car. To do this, you need to search the catalog by this code. All parts from this car model will be knocked out.
If you do not know the OEM number of the spark plugs or the body number, then the search can be performed by the year of manufacture and modification of your car.
How to replace
In order to replace old candles with new ones, you will need the following tools:
- candle wrench for 14 with an elastic band inside;
- ratchet wrench with a head for 10;
- flat head screwdriver.
All candles must be placed in order - one after the other. That is, we first twist the first completely and only then proceed to the second.
The first step is to remove the protective cover. For this, three fastening bolts are unscrewed. Then, using a screwdriver, the connector is removed and the bolt holding the ignition coil is unscrewed. Next, you need to pull out the ignition coil and insert the spark plug wrench until it clicks.
After that, you can start unscrewing the candle. Having released the connector, you need to screw in a new plug and put the ignition coil in place, and also tighten the mounting bolt and connect the connector. Thus, all candles are replaced. Tighten the spark plug carefully so as not to break the threads, but at the same time firmly so that there is no poor heat transfer.
If you don't know which spark plugs you should buy, here are the most commonly used spark plugs for Mitsubishi Lancer X.
| Original candles | Not original candles | |
|---|---|---|
| Mitsubishi Lancer X 1.5i | Mitsubishi MN176628 | Bosch 0 242 235 769 |
| Mitsubishi Lancer X 1.6i | Mitsubishi 1822A085 | HKT CY-57 HKT CP07 |
| Mitsubishi Lancer X 1.8i | Mitsubishi MN163236 | NGK FR6EI |
| Mitsubishi Lancer X 2.0i | Mitsubishi MN163807 | Denso K20PSR-B8 |
To replace spark plugs you will need tool:
- head 10
- candle head 16
- crank / ratchet
- extension
When should you replace the spark plugs?
The manufacturer recommends replacing the spark plugs every 60,000 km. mileage, according to technical regulations. Iridium spark plugs must be replaced every 90,000 km. Because in Russia, the quality of gasoline leaves much to be desired, it is better not to delay the replacement of spark plugs.
A step-by-step guide to replacing candles on the Lancer 10
- Turn off the ignition and open the hood, take the ratchet and head for 10 and unscrew the plastic cover on the engine, which is held by 3 bolts.
- Remove the protective cover and gain access to the ignition coils. We disconnect the chips from each of the coils, in order to remove it, you need to press on the latch from above and pull it towards you.
- To prevent dirt from getting into the candle wells, we clean and blow dust around the ignition coils.
- With a 10 head, unscrew one bolt on each of the 4 ignition coils. We remove the ignition coils and get access to the spark plugs.
- To unscrew the spark plugs, I used an extension wrench. An extension cord will be required since the candles are deep.
- We turn out the candles and screw in new candles.
- Putting it all in reverse order.
Video instruction
Replacing spark plugs on a Mitsubishi Lancer X is a very simple task that will take a few minutes of free time. The manufacturer recommends replacing the iridium spark plugs every 90,000 kilometers, at least as it is written in the Mitsubishi service manuals. In fact, the Rolf service center recommends changing them every 60,000 kilometers, most likely this is due to the poor quality of gasoline in Russia.
To replace the spark plugs, you must:
- Elongated socket 16 or spark plug wrench 16 with a retainer, it is desirable that the outer diameter of the key is as small as possible, otherwise it will not crawl into the spark plug wells.
- Torx E10 socket for 1.5 liter engine. For engines of 1.8 and 2.0, a conventional 10 hex socket is used.
- Spark plugs - 4 pcs.
Spark plugs for Mitsubishi Lancer X 1.5i:
- Mitsubishi MN176628
- Bosch 0 242 235 769- spark plug
Spark plugs for Mitsubishi Lancer X 1.8i and 2.0i:
- Mitsubishi MN163236- original spark plug
- Mitsubishi MN163807- original spark plug
- NGK FR6EI- spark plug
- Denso K20PSR-B8- spark plug
Please note that when buying original Mitsubishi spark plugs, the box will contain Bosch spark plugs (for a 1.5 liter engine), and NGK or Denso (for a 1.8 and 2.0 liter engine). The fact is that Mitsubishi in this case is only a packer, and the above companies are engaged in the production of candles. Knowing this, for the same amount you can buy two sets of candles instead of one.
Let's start replacing spark plugs on Mitsubishi Lancer X
1. The first step is to open the hood and remove the upper plastic engine cover by pulling it up.
2. If there is a lot of dust and debris on the engine, it is advisable to blow everything thoroughly. After that, you can already start unscrewing the bolts of the ignition coils using a 10 or Torx E10 socket, depending on the type of bolts. 
3. Now you need to disconnect the plug of the low-voltage input of the ignition coil, then pull the coil up and put it aside. 
4. Immediately under the coil there will be a spark plug, which must be unscrewed using a spark plug wrench with a magnetic or plastic retainer. If you are using a conventional extended socket, the spark plug can be pulled out using the fuel hose: 
5. Screw in the new spark plug. If a torque wrench is available, it is advisable to tighten the spark plug with a torque of 25-30 Nm
6. Reinstall the parts in the reverse order of removal.
Replacing spark plugs on a Mitsubishi Lancer X is not difficult at all, you can handle it in a few minutes. The main thing is to clearly follow the instructions and not deviate from it. If you have never done this before, then it is better to ask someone to help the first time.
Service books from the official manufacturer say that replacing candles is best done every 90,000 kilometers with iridescent candles. In our country, this figure is less - 60,000 km, because the quality of gasoline in most of the region leaves much to be desired. If the candles are ordinary, then it is better every 30,000 kilometers.
What do you need to replace?
Key 16 or special spark plug key. It will be good if the outer diameter of the hook is not large - then the tool will easily crawl into the candle wells.
If you have a 1.5 liter motor, then you will also need a TORX E10 socket head, if 1.8 or 2, then just a 10 hexagon.
A set of new candles - 4 pieces.
Procedure:
1. Open the hood and remove the plastic engine cover. There is no need to unscrew anything - just pull the cover up.
2. If the engine is dirty, in dust or debris, it is best to thoroughly rinse and wipe everything. Now you can safely unscrew the bolts that secure the ignition coils. To do this, you just need an E10 socket wrench or a simple 10 head.
3. Now you will need to disconnect the wire plug from the ignition coil. Removing the coil is easy - pull it up and set it aside to avoid losing it or stepping on it.
4. Immediately under the coil we see what we are looking for. It is unscrewed with a special spark plug wrench or retainer. Using a simple socket head, the spark plug can be removed using the fuel hose (as pictured)
5. We put new candles. It is better to first twist it by hand to feel whether the candle has got into the thread or not. If you feel that it is going "tight", then it is better not to put in efforts, but to twist and try again. It is good if you have a special torque wrench: you will need to tighten with a torque of 25 Nm
6. Put everything in place in the reverse order.
Now which candles should you choose? Different plugs are suitable for different power units.
For a 1.5 liter engine, this is Mitsubishi MN176628 (original) or Bosch 0 242 235 769.
For engines of 1.8 or 2.0 liters - originals Mitsubishi MN163236, Mitsubishi MN163807 or NGK FR6EI,
Denso K20PSR-B8.
Remember that even if you buy an original product from Mitsubishi, the box still contains candles from Bosch or NGK, Denso. No problem: Mitsubishi just packs the candles and the production is done by partner companies.
