spark plug replacement help

[heyhi]

i replaced all my plugs except 1. the one on the pas side closest to the inside of the car seems to be a dif size plug. is it possible some 1 put the wrong plug in it. the socket i used for the other 5 wont fit

[GerryO]

Could be due to the approach angle of the socket, especially if you aren't loosening/removing the balance tube across the rear of the plenum, or try a larger size spark plug socket?

[yodawill2000]

Very odd.I can get to all 6 of mine with ease ??Very long extension with a u-joint attachment between it and the socket.

[GerryO]

Very odd.I can get to all 6 of mine with ease ??Very long extension with a u-joint attachment between it and the socket.

Same here...with the plenum and everything else removed. New platinum plugs are good for a 100K? I'll just pull and clean the plenum, and change plugs every 100K. Next scheduled change is early in my next lifetime.

[yodawill2000]

lol

[driverdriver]

Did you stick to OEM NGK sparkplugs?

For whatever reason they're the only ones that work with the car. If you went aftermarket (Champion, Bosch, etc) your inviting trouble.

[GerryO]

Did you stick to OEM NGK sparkplugs?

For whatever reason they're the only ones that work with the car. If you went aftermarket (Champion, Bosch, etc) your inviting trouble.

I used six Nissan Part No. 22401-1P116/NGK PFR6G-11 sparkplugs and so far, so good.

[J30inthe sun]

I used six Nissan Part No. 22401-1P116/NGK PFR6G-11 sparkplugs and so far, so good.

I just replaced mine with NGK PFR5G-11. The manual says that is the standard, the NGK PFR6G-11 the manual says is the cold type. I don't quite know what the difference will be but I hope that's OK.

[GerryO]

Wikipedia says:

"For normal use, the selection of a spark plug heat range is a balance between keeping the tip hot enough at idle to prevent fouling and cold enough at maximum power to prevent pre-ignition leading to engine knocking".

I imagine hotter plugs might be better for short trips, stop and go city driving, and colder for freeway and heavy engine loads (hills and aggressive driving), especially if using mid-grade fuel.
Modified by GerryO at 8:47 AM 9/20/2008