Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 954 (3.5L ENGINE (SERVICE INFORMATION))CYLINDER HEAD COVER - RIGHTINSTALLATION

2004 Toyota Matrix XR, FWD, Standard

Cylinder Head Cover - Right: Installation

2004 Toyota Matrix XR, FWD, StandardSECTION Installation

WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.

Clean cylinder head and cover mating surfaces. Inspect and replace gasket and seals as necessary (Fig 1 ).

Fig 1: Identifying Spark Plug Tube Seals
Courtesy of DAIMLERCHRYSLER CORP.
To replace spark plug tube seals:
1. Using a suitable pry tool, carefully remove tube seals.
2. Position new seal with the part number on seal facing cylinder head cover.
3. Install seals using Special Tool MD-998306 (Fig 2 ).
  
  Fig 2: Installing Spark Plug Tube Seals
  Courtesy of DAIMLERCHRYSLER CORP.
Install cylinder head cover bolts and tighten to 12 N.m (105 in. lbs.).
Install the ground strap retaining bolt to the cylinder head cover.
Install the wire harness track retaining nuts (Figure ).
Install the ignition coils. Tighten mounting screws to 6.7 N.m (60 in. lbs.) (Figure ).
Connect the ignition coil electrical connectors (Figure ).
Install upper intake manifold (Refer to INSTALLATION ).
Connect negative battery cable.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.