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 ARCHIVED TOPIC: ok new car experts


Please note this is an archived topic, so it is locked and unable to be replied to. You may, however, start a new topic and refer to this topic with a link: http://www.banjohangout.org/archive/385903

1935tb-11 - Posted - 09/25/2022:  10:33:26


we got a 2016 mazda CX5 with the 2.5 skyactive engine..

it has 100,000 on it and i am going to change the plugs.

mazda factory plugs are 27.00 each x 4

from what i have read NKG makes the plugs for them , and they have a NKG brand lazer iridium tip plug that is supposed to be the same as OEM. they are 9.89 each x 4.



there is talk of the knock sensor reading through the plug ohm resistance ,,,,, both plugs are to measure between 3.0 and 7.0 ohms

do any of you car geeks know anything about what is going on here ?   HELP !


Edited by - 1935tb-11 on 09/25/2022 10:34:25

thor363 - Posted - 09/25/2022:  10:36:51


NGK makes excellent iridium plugs. I have no idea why we're seeing these questions on a banjo forum, BUT, the knock sensor reads nothing but engine know via the knock sensor. If you're getting codes for 'knock' being detected. Move to a plug that is 1 step colder in operation.

ChunoTheDog - Posted - 09/25/2022:  10:57:54


Stick with the exact same plug as the oem's that came in your vehicle.



You got 100k out of them, no reason to try anything else.



 



Good quality plugs are expensive but you get what you pay for.


Edited by - ChunoTheDog on 09/25/2022 10:58:15

Texican65 - Posted - 09/25/2022:  11:06:25


Can’t go wrong with NGK….made in Japan as opposed to China or Mexico as with several of the old school US name brand plugs that aren’t worth a hoot anymore.

heavy5 - Posted - 09/25/2022:  11:34:43


Have used NGK forever in everything I can including Rotax engines flying ultralights for 560 hrs. Never a problem .
Hopefully they're still made in Japan .

1935tb-11 - Posted - 09/25/2022:  11:48:03


quote:

Originally posted by thor363

NGK makes excellent iridium plugs. I have no idea why we're seeing these questions on a banjo forum, BUT, the knock sensor reads nothing but engine know via the knock sensor. If you're getting codes for 'knock' being detected. Move to a plug that is 1 step colder in operation.






i realize NKG makes great plugs ,,and 2,, this is the part of the off topic not banjo related,,there are some pretty smart car guys on here too.  i finally got confirmation from NKG website that these are the same plug as mazda uses as OEM part... so   thats a relief...save about 75 bucks ,,,,,,,

thor363 - Posted - 09/25/2022:  12:06:00


If you drive/live in a very hot state, and you pull a plug to see what it looks like, you may see signs of detonation that you have never felt. Examine it, and see if you want to go to one step colder. If you don't live in a hot State, or drive hard, you're probably fine with the replacement. YMMV

1935tb-11 - Posted - 09/25/2022:  12:11:19


quote:

Originally posted by thor363

If you drive/live in a very hot state, and you pull a plug to see what it looks like, you may see signs of detonation that you have never felt. Examine it, and see if you want to go to one step colder. If you don't live in a hot State, or drive hard, you're probably fine with the replacement. YMMV






its a wide range of temps around here ,,summer in the 90s winter could be in single digits ,,, the plugs in it are about 20,000 over due for changing ,,so its gonna help..i don't drive it often but i could tell it was not running as strong as it did 50,000 ago ,,so plugs ain't gonna hurt it LOL

donc - Posted - 09/25/2022:  15:40:28


quote:

Originally posted by ChunoTheDog

Stick with the exact same plug as the oem's that came in your vehicle.



You got 100k out of them, no reason to try anything else.



 



Good quality plugs are expensive but you get what you pay for.






What Chuno Says:    Probably the best advice. In days of old I would be replacing plugs about every 2 years.  At one dollar per plug it wasn't a major expense.. My previous car [2012 Toyota Matrix] specified a change of plugs every 192,000 km. I got rid of the car before it ever got a change of plugs.  I also have a Mazda CX5 [2020].  These new cars are so sensitive I wouldn't monkey around with possible substitutions.  The Mazda has been driven for over 2 years and everything to date is fine. Even at $50 per plug a total of $200 would be cheap insurance to insure a few more years of trouble free driving. 

banjoy - Posted - 09/25/2022:  16:01:32


I agree with the idea of going with OEM recommendations, but if the same plugs are available elsewhere for less then no harm in that.

Just beware of where you source the plugs, believe it or not, spark plugs have a counterfeit problem. Here is info from NGK's website on how to spot fake or real NGK plugs:

ngkntk.com/newsroom/blog/emea/fake-or-not/

1935tb-11 - Posted - 09/26/2022:  06:34:47


i found mine on a NKG website dealer thats been around since 1969 so hopefully they are the real deal....

steve davis - Posted - 09/26/2022:  08:11:55


I only use NGK or Bosch.Gave up on Champions many years ago.

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