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  • Toyota Highlander

Where are the spark plugs on a 2001 Toyota Highlander?

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βˆ™ 2007-01-15 23:36:52

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The 3.0L 1MZ-FE Engine, California, Highlander Limited V-6 Like many Japanese cars, they are screwed into the top of each cylinder head. The 3 spark plugs closest to the front of the car are recessed deep through the valve cover, so you must first remove the flimsy plastic engine cover (held in with Allen head nuts), and remove the three (3) DIS (Distributor-less Ignition System) Spark Plug Connectors from the Valve Cover. The DIS Spark Plug Connectors are each held in place with a single 6mm bolt (so they don't come loose). If you look down the "Tube", you will see the top of the spark plug. The other three spark plugs are in the rear side valve cover and have the same DIS Spark Plug Connectors and bolts. Unfortunately, the Upper Intake Plenum and Throttle Body must be removed if you need to get to these spark plugs. Also, to remove the Upper Intake Plenum and Throttle Body, the Strut Tower Brace has to to be removed to give you enough room to work.

2007-01-15 23:36:52
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