they are installed through tubes in the tops of both cylinder heads. to access the front ones, remove the trim shield from the top of the engine, remove the 3 electrical plugs then the 3 bolts from the coil assemblies. remove the coils by twisting then tugging gently. you can then see the spark plugs in the holes that the coils just came out of. to get to the rear ones, the cowl containing the wiper motor needs to be removed. and to make the job easier, i always remove the throttle body from the intake. this allows easy access to the #3 and #5 spark plugs under the intake.
take off the plastic cover and under where the silver cover on the engine says ecotech is where the spark plugs are located
There are six plugs. The plugs are located at the end of the spark plug wire. There are 2 banks of plugs. One bank you can see and the other bank is located ib the back of the engine.
Help! where is the thermostat located on a 2005 sienna?
Screwed into the head or heads on a V6.
The Spark Plugs are located under the resonator box in the center of the engine (its the rectangular black box on top of the engine)
How to change the spark plugs
Toyota says to change at 30,000 mile intervals in order to maintain Emissions warranty.
where are the spak plugs located on the 2005 ascender?
NGK platinum plugs
use the spark plug wrench and use used mirror to find the rear spark plug, you need to two person to do this, then fell the spark plug rear with your hands then apply the spark wrench to remove the old spark plug.
Check the Vehicle Emission Control Information ( VECI ) decal located in the front of the engine compartment ( it will show the type of spark plugs to use and the spark plug gap )
Check the Vehicle Emissions Control Information ( VECI ) decal located in the front of your engine compartment ( it will show the type of spark plugs to use and the spark plug gap )