- 1
Remove air filter duct. There are two 10 mm bolts, one by the battery and the
other one by the radiator cap.
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Click image to see it larger
- 2
Remove engine cover. There are 4 bolts. Two 5mm Hex bolts and 2 10 mm bolts.
You may not need to remove the bolts marked with the "Red Arrow" you could just slide the cover, but for me was easier just taking the bolt out.
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- 3
Remove the air filter box cover and attached hoses. First loosen the clamp by the
throttle body. Then
Remove the vent hose and unclip the air filter box cover. Then Disconnect the air flow meter connector and remove the air filter box cover with hoses
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- 4
Change front spark plugs. With the cover out, you could start by changing the front spark plugs. This step
is simple, just remove the 10 mm bolts (Yellow Arrows), then disconnect the coils connectors (Green Arrows) by pressing the tab (Red Arrow) on the connectors and pull
out the coils. Once the coils are out you
just change the spark plugs and install back the coils, bolts and connectors.
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Here comes the fun part, removing the intake plenum to change the back spark plugs.
- 5
Disconnect 3 solenoid connectors and 4 hoses
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- 6Remove intake plenum bolts (4) and nuts (2)
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- 7
Remove vacuum hose. Press clamp tabs
together and slide clamp back, then pull
disconnect hose.
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- 8
Remove PCV valve hose
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- 9
Remove 12 mm bolt from behind plenum. This is probably the hardest step. Using a 12 mm wrench or
small ratchet and socket, remove the bolt that is attaching the power steering hose bracket to the intake plenum. Here is a picture with the bolt removed
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At this point you could try to just lift the plenum and try to change the spark plugs without removing the plenum, but I decided to remove the
plenum, since there are just 2 hoses left to remove the plenum I would do that.
- 10
Remove Throttle Body Hoses and Connector. You could either remove the throttle
body bolts or disconnect the two coolant hoses (Yellow Arrows), disconnect the connector (Red Arrow) and remove clips (Orange Arrow)
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With all that disconnected you should be able to just pull out the plenum and have plenty of access to the back ignition
coils and spark plugs. I also like to cover the intake with tape or rags to prevent bolts or tools going into the engine.
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Click image to see it larger
- 11
Change back spark plugs. Just as you did the front ones, remove bolts, disconnect
connectors, pull out coils and change spark plugs. Here is a photo with the middle coil already removed
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- 12
Install in revers order.
Blooper. My friends hand stuck under plenum
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Extra pictures
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