Spark plug change
I want to change the plugs on my daughter’s 2004 Nissan Micra 1.2, but I need to find out how to remove the airbox that sits over the coil packs – in particular, how to separate the airbox from the plastic intake trunking at the rear. Do these separate by pulling the airbox away from them? Or are they a single unit and will I need to remove the trunking from the cylinderhead? Gary Mills The trunking should pull away from the airbox before it is removed, but the plastic trunking can become brittle over time and a spray of penetrating oil around the connection before wiggling it out of position should help. The airbox itself is secured by six 10mm bolts and there are also three electrical plugs and a couple of breather pipes to detach before lifting it out.
The K12 Nissan 1.2 was featured as a CM project car in 2014 and the November 2014 issue featured an engine service, including a spark plug change. Back issues are available by emailing
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