i was just wondering if an average joe could change the plugs in my
girlfriends 99 maxima, ive done it on my bikes and oldder dodge
ram.just trying to save money. any feedback would be great. thanks

Yes - its very easy.

Go to www.maxima.org for step-by-step instructions.

Make sure you use NGK Platinum plugs as replacements (OEM). They are
on the pricier side, ~10 bucks a plug.

cheers,
Nirav
96 Max GLE, 131k

Why not switch ot iridium plugs of same specs? They seem to last longer
and are cheaper as far as i know.

njmodi wrote:

AS wrote:
of the harder metal. Best to stick with OEM NGKs.

CD

Not to enter in an argument:

Well, according to the NGK website, Iridium has "more durability and a
higher melting point than platinum" and they do manufacture Iridium
plugs for all sorts of vehicles.

What do you mean the car has to be built to take advantage of the harder
metal?

By iridium being harder and tougher, the center electrode can be thinner
and this helps with the ignition, the thinner the electrode, the easier
the spark jumps the gap, thus requiring less energy to ionize the gap,
thus having more energy to ignite the fuel mixture.

http://www.ngksparkplugs.com

http://www.ngksparkplugs.com/apps/ca...engineid=30031




Codifus wrote:

AS wrote:
miles for a 4th gen, or 100K miles for the 5th gen and later. If it's
harder, what good is it doing? Iridium plugs do last longer in cars that
came with them OEM. . . . the engine was designed for them. It's just
like how the VQ loves NGK plats and for some reason last 40K miles
longer in the (5th gen and later) motor.

Don't get me wrong, NGK make great stuff, it's just not quite the right
application.

CD

Just to add a twist to the discussion... I would assume the Maxima's
ignition system is designed to build up a certain potential difference
between the electrodes to generate the spark.. if the gap is narrower,
wouldn't the timing and or strength of the spark be affected?

Given that the change interval is 60k (i.e very infrequent) and NGK
platinums are readily available, I see no reason to use any other plugs
(NGK or otherwise).

Cheers,
Nirav

The only reason to use the iridiums is better combustion and lower price

njmodi wrote: