As I am sure you are aware, you don't need to worry about spark plug replacement until 105,000 miles, regardless of whether you elect to follow maintenance schedule 1 or 2.
The Service Manual lists three steps for removing the spark plugs: 1) Remove engine cover, 2) Remove ignition coil(s), 3) Remove spark plug using 16mm spark plug wrench.
However, according to the Service Manual, in order to remove the rear ignition coils you need to: 1) Remove front wiper arm and extension cowl top (lower and upper), 2) Remove intake manifold collectors (upper and lower), 3) Move aside harness, harness bracket and hoses located above ignition coil, 4) Disconnect harness connector from ignition coil.
Is that enough to scare you away??
Yea you did scare me enough not to do the back three plugs, and I thought doing the plugs on my Grand Caravan was tough. I have used Playtime plated plugs in my Jetta for a long time and I generally get 100,000 KMs( 62500 miles) out of them before the plugs burn out. In reading the maintenance plans for Canadian models they are recommending to change the plugs at 48000Kms (29500 miles) looks like a money maker for the dealership.
Having never run a car with PPP's for 100,000 miles( 162500 Kms) I would be interested if that is really possible.
Now you can visualize it...teding said:There is a part called the "spark plug tube seal". I can't visualize what the part looks like but he said it along with the valve cover gasket keeps the oil away from the plugs.
The tubes, like the valve cover gaskets, are not reusable. Since they are replaced whenever the valve cover is removed it makes sense to package the tubes with the valve-cover gaskets.UncaDanno said:Hmm... they look mighty separate from the valve cover to me. The valve cover is not even in the illustration.
Maybe they meant that they can be obtained only as part of the valve cover gasket KIT.
$183 for a set of gaskets? Oh yeah. We're talking Nissan parts!