How to service and repair the spark plugs on Toyota Yaris?

The servicing and repair of 1NZ-FE ignition system spark plugs starts by disconnecting the negative battery cable. You should begin by removing Cylinder head cover No.2 through the removal of its four nuts. Separate ignition coil No. 1 from the system following the steps of disconnecting its 4 connectors and eliminating its 4 bolts along with 4 ignition coils. A 14 mm spark plug wrench should be used for removing the four spark plugs.

OEM Toyota Yaris Spark Plug

Ignition Spark Plug

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Toyota Yaris Spark Plug
Part Number: 90080-91184
$10.38 MSRP: $14.46
You Save: $4.08 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Plug, Spark; High Ignitability; Iridium Long-Life; Double Platinum; Iridium Power; Platinum TT; Iridium TT; Spark Plugs
- Replaces: 90919-01168, 90919-01218, 90919-C1002, 90919-01217, 90080-91185, 90919-01240
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2007-2018 Toyota Yaris | Base, L, LE, S, SE | 4 Cyl 1.5 L GAS
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Toyota Yaris Spark Plug
Part Number: 90118-WBC16
$29.47 MSRP: $41.02
You Save: $11.55 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Plug, Spark
- Replaces: 90118-WB461
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2019-2020 Toyota Yaris | L, LE, XLE | 4 Cyl 1.5 L GAS

Toyota Yaris Spark Plug

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Spark Plug of Toyota Yaris automobiles is one of the parts in electric ignition system that has the function of generating a highly intensive electric spark in order to ignite fuel/air mixture in the combustion chamber. The Spark Plug as a component of the described system might wear out in the long run due to unfavourable environmental conditions and chemical influence, thus, possible misfires might occur in the cylinder area. There are various sorts of Spark Plugs with a couple of ground electrodes and surface discharge Spark Plugs that aid ignition and the general life of the Spark Plugs. Spark plug reading and indexing: It is an important aspect of vehicle health though not used in combusting fuel and air: Proper gap size and Heat range are vital specific values for efficiency and health of the engine.

Toyota Yaris Spark Plug Parts and Q&A

Spark Plug
90080-91184
Q: How to service and repair the spark plugs on Toyota Yaris?
A:
The servicing and repair of 1NZ-FE ignition system spark plugs starts by disconnecting the negative battery cable. You should begin by removing Cylinder head cover No.2 through the removal of its four nuts. Separate Ignition Coil No. 1 from the system following the steps of disconnecting its 4 connectors and eliminating its 4 bolts along with 4 ignition coils. A 14 mm spark plug wrench should be used for removing the four spark plugs.

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