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Thread: Spark Plug Removal

  1. #1
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    Spark Plug Removal

    Well, I tried all my spark plug sockets and none of them fit the 2014 CX GT plugs. I poked a flash light down the plug hole and couldn't even view a plug nut. Anyone can help me please with the size of the proper removal socket? Thanks!

  2. #2
    i-ACTIV AWD Aficionado Kedis82ZE8's Avatar
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    It appears replacements can be any of the following. Might be able to track down proper socket that way.

    PE01-18-110, PE02-18-110, PE5R-18-110, PE5S-18-110

    This is from the FSM.

    Spark plug gap [PE01-18-110, PE02-18-110]
    Standard: 0.75—1.10 mm {0.030—0.043 in}
    New spark plug (reference): 0.75—0.85 mm {0.030—0.033 in} Spark plug gap [PE5R-18-110, PE5S-18-110]
    Standard: 1.05—1.40 mm {0.0414—0.0551 in}
    New spark plug (reference): 1.05—1.15 mm {0.0414—0.0452 in}
    '15 CX-5 GT 2.5L w/tech package - 53K Miles - https://www.oemvehicleparts.com/ (30% off "shipping" with code "MAZDAS247")

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    i-ACTIV AWD Aficionado Kedis82ZE8's Avatar
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    Wow!!! They give these away... $31.47/each

    http://www.jimellismazdaparts.com/pr...PE0118110.html
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    i-ACTIV AWD Aficionado Kedis82ZE8's Avatar
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    Chris_Top_Her might be able to help with what he used. It will be quite some time before I am pulling mine out.


    http://www.mazdas247.com/forum/showt...566-Spark-Plug
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  5. #5
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    Internet stated a 5/7 wrench, tried, but it didn't fit. I wanted to remove a plug
    to see if the engine is running rich that may help explain the crappy fuel mileage.
    Last edited by fvansan; 02-08-2015 at 01:44 PM.

  6. #6
    i-ACTIV AWD Aficionado Kedis82ZE8's Avatar
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    This guy mentions 9/16 socket on 2.0L Skyactiv.

    http://www.paulstravelpictures.com/M...acement-Guide/
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  7. #7
    Registered Member erhayes's Avatar
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    I see these spark plugs are the latest designed plugs. They appear to have special thin ground and center electrodes. I can't see that costing 3-4X more than standard platinum or Tungsten tipped plugs.

  8. #8
    MoMo MikeM.'s Avatar

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    Quote Originally Posted by Kedis82ZE8 View Post
    It will be quite some time before I am pulling mine out.
    Same here. After two years I only had 20,000 miles. At that rate I won't be removing my plugs for another eight years!

  9. #9
    i-ACTIV AWD Aficionado Kedis82ZE8's Avatar
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    What size socket did you end up using?
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    socket size is 14mm

  11. #11
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    Best source for highest quality spark plugs

    What's your best source for spark plugs? My best information is that OEM Mazda PE5S 18110 is the highest quality spark plug. They are expensive, though. Have you seen the price difference if you shop online? Some are very similar or just a few bucks discounted off of dealer price, about $23 each. Engineered to get what you pay for. Nearly $100 for the set of 4. Some charge freight on top of that, too.

    But on Ebay there are sellers who claim OEM parts at a fraction of the cost. Has anyone bought from these sellers and compared the product side-by-side? I hope I'm not breaking the rules (I may hear about it if I am) if I provide the source. For less than the price of one dealer plug, I can have a set of four. And I can find them in the old stock original non-resistor or in the newer part number for resistor plugs (the "S" changes to an "R" if I understand the nomenclature correctly), so I'm assuming these are old stock. But I don't know if these are "for Mazda" knock-offs that are cleverly made, marked, and boxed to look like OEM but just cheap imitations. In any case, these pictured look like the originals from my car.

    I'm interested in hearing if you've found a discounted, reliable source for your spark plugs (and other parts). Do you trust these?

    https://www.ebay.com/itm/For-Mazda-I....c100005.m1851
    Last edited by 2014CX5GTAWD; 10-22-2019 at 11:04 PM.

  12. #12
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    Quote Originally Posted by 2014CX5GTAWD View Post
    What's your best source for spark plugs? My best information is that OEM Mazda PE5S 18110 is the highest quality spark plug. They are expensive, though. Have you seen the price difference if you shop online? Some are very similar or just a few bucks discounted off of dealer price, about $23 each. Engineered to get what you pay for. Nearly $100 for the set of 4. Some charge freight on top of that, too.

    But on Ebay there are sellers who claim OEM parts at a fraction of the cost. Has anyone bought from these sellers and compared the product side-by-side? I hope I'm not breaking the rules (I may hear about it if I am) if I provide the source. For less than the price of one dealer plug, I can have a set of four. And I can find them in the old stock original non-resistor or in the newer part number for resistor plugs (the "S" changes to an "R" if I understand the nomenclature correctly), so I'm assuming these are old stock. But I don't know if these are "for Mazda" knock-offs that are cleverly made, marked, and boxed to look like OEM but just cheap imitations. In any case, these pictured look like the originals from my car.

    I'm interested in hearing if you've found a discounted, reliable source for your spark plugs (and other parts). Do you trust these?

    https://www.ebay.com/itm/For-Mazda-I....c100005.m1851
    Those pictures may be the real deal but in no way guarantee thatís what arrives in the shipment. No way those are real. Clever counterfeits will arrive that have slight differences than those pictured. Well know issue to avoid at OdyClub. Get the NGK plugs, should be the same thing but lacking the Mazda logo. I got the compatible Denso Iridium plugs for about $30 for a set of 4 at Advance Auto, they work fine *shrug*. Way safer bet than some crapshoot eBay listing.

  13. #13
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    Until I know that non oem plug meets the workshop manual resistance of 3.0*7.5 kilohms) I wouldn't use a non OEM plug. The ecu uses the spark plug as primary knock sensor. If the resistance is out of spec then you could end up losing power and or mpg. I've been meaning to buy a cheap plug from Vatozone and test the resistance.

  14. #14
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    Quote Originally Posted by Chris_Top_Her View Post
    Until I know that non oem plug meets the workshop manual resistance of 3.0*7.5 kilohms) I wouldn't use a non OEM plug. The ecu uses the spark plug as primary knock sensor. If the resistance is out of spec then you could end up losing power and or mpg. I've been meaning to buy a cheap plug from Vatozone and test the resistance.
    [emoji23] what a non sense.... keep using oem and getting ripped off instead of using good ngk or denso spark plugs.


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  15. #15
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    Itís well established that the NGK plugs are the OEM without the Mazda logo (down to the part number printed on them). Yrwei did a deep dive research project and somehow found out that some CX-5ís came standard with the Denso Iridium spark plugs. Those are the only two Iíd consider. Anything else is a roll of the dice.

    EBay plugs are likely going to be counterfeit when the claim is OEM for a set of 4 cheaper than the going rate of 1 plug. People who installed eBay plugs over at OdyClub thinking they were OEM lost hundreds in labor when the counterfeit set caused misfires and such in under a year of use.

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