For the 3 spark plugs in front:
1. You would have to remove the plastic protective cover (this cover is silver&red w/ the words "nissan and v6 3000")
2. unplug connector and remove coil (DO NOT mix up the coils, keep the same coils on the same cylinder)
3. Remove spark plug
Rear 3 plugs: located on the rear of the intake (the black pipes atop the engine). there are 3 openings at the rear of the black intake pipes, each opening has a coil mounted.
1. Unplug coil connector and remove coil
2. remove spark plug (you'll need a long extension)
***Installation is reverse, be sure not to over tighten the plugs!! Use anti-seize compound on all the new plugs threading. Hopefully this helps!!
SOURCE: any tricks to changing spark plugs in 2000 nissan
go to parts store and buy a spark plug wire remover so you don't brake the plug wires unless your going to use them, and be sure to use dialectic grease on the end of the boots.
SOURCE: spark plugs
They are under the plastic covers that are in the center of each valve cover, there should be 2 or 4 allen key screws holding the covers on, when u get them loose u will see 3 coil packs under each cover, thease supply the spark for the plugs, u must unplug the wire harness from each one then remove the 2 screws that hold it down, slide it out vertically because there is a long stalk that goes down to the plug, u will need an extention on your rachet to reach the plug. The front 3 are easy and the rears are harder and require some tight space jockying but it is not impossible for someone with moderate mechanical skills. good luck !!!
SOURCE: 95 nissan maxima wont start
I had a 94 which i fixed this same type of problem by putting in a new distributor
SOURCE: CHANGED SPARK PLUGS NOW HESITATING & RUNS
chances are an ignition wire was damaged when you tugged on it to remove it from the old plug .. the ignition cables have a high resistance wire inside (not a solid wire) this is not hard to damage .. check to make sure each wire is properly seated on the plug .. its easy to not get it on all the way since you cant see it ..
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