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The maintenance schedule for our QX30s calls for replacement of spark plugs and engine air filter every 45,000 miles. This is a relatively straightforward service that requires only basic hand tools and is well within the capabilities of a competant DIYer. You do not need to lift the vehicle off the ground; all access is from the top of the engine bay.
The following parts are necessary:
To begin, open your hood and prop it up with the hood support rod.
Grab the plastic engine cover and pull up at the corners. It is held in place by five rubber grommets. Pulling straight up near each grommet will pop the grommet off of the stud.
Once removed, you can see the engine.
Use a 7mm socket and appropriate ratchet/t-handle or a nut driver to loosen the hose clamp between the air filter housing and the air intake tube.
Use a 7mm socket and appropriate ratchet/t-handle or a nut driver to loosen the hose clamp between the turbocharger inlet and the air intake tube.
Use a Torx T-25 socket and appropriate ratchet/t-handle to remove the four (4) screws that attach the upper air box to the lower air box. These screws are "captive" and will remain with the upper air box even after being full unscrewed.
The following parts are necessary:
- Spark Plugs (4x NGK SILZKFR8E7S)
- Engine Air Filter (I used Mann C27004)
- Pliers (to remove spring-style hose clamp)
- Small flat-blade screwdriver (to pry up on electrical connector lock tabs)
- Torque wrench(es) (capable of 80 in-lb and 17 ft-lb)
- Torx T-25 socket
- Torx T-30 socket
- 7mm socket
- 14mm spark plug socket
- Ratchet or T-handle(s)
- ~10" socket extension
To begin, open your hood and prop it up with the hood support rod.
Grab the plastic engine cover and pull up at the corners. It is held in place by five rubber grommets. Pulling straight up near each grommet will pop the grommet off of the stud.
Once removed, you can see the engine.
Use a 7mm socket and appropriate ratchet/t-handle or a nut driver to loosen the hose clamp between the air filter housing and the air intake tube.
Use a 7mm socket and appropriate ratchet/t-handle or a nut driver to loosen the hose clamp between the turbocharger inlet and the air intake tube.
Use a Torx T-25 socket and appropriate ratchet/t-handle to remove the four (4) screws that attach the upper air box to the lower air box. These screws are "captive" and will remain with the upper air box even after being full unscrewed.