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spark plugs


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22 replies to this topic

#1 OFFLINE   donsgolf

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Posted 30 April 2017 - 12:06 PM

how long do spark plugs last

 









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#2 OFFLINE   autom8r

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Posted 30 April 2017 - 12:46 PM

My experiences has been about 60k.

 

Ford says 100k, but you'll start misfiring under load and notice strange behavior in transmission shift patterns. These are the early signs.  It is best to changeout the plugs before the gap on them becomes so big that it damages the ECU.  It is a relatively simple process for a Sunday mechanic and well documented on this forum,

 

Happy trails.


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#3 OFFLINE   enigma-2

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Posted 30 April 2017 - 05:59 PM

Ford garage told me that the recommended changing 100k. As they age the gap gets larger and the draw more curent to fire across. This puts additional load on the coils and the extra heat will eventually cause the coils to fail.
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#4 OFFLINE   macbwt

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Posted 30 April 2017 - 09:29 PM

100,000 miles but if you are idling a lot and have heavy stop and go traffic I would recommend about 70K miles.   Those idle hours and sitting in traffic add up quickly as I am finding out with my wife's Edge in comparing miles of operation vs hours of engine operation.


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#5 OFFLINE   enigma-2

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Posted 01 May 2017 - 01:50 PM

Good point, plugs still firing but no milage accumulating. I can see this extending not only to idling but to freeway driving and city traffic as well. (Not much if either around my neck of the woods, but certainly affects millions in California, Florida & metropolitan areas).

#6 OFFLINE   akirby

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Posted 01 May 2017 - 03:40 PM

Even without misfires you don't want to leave them in for 100K.



#7 OFFLINE   macbwt

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Posted 01 May 2017 - 07:27 PM

Even without misfires you don't want to leave them in for 100K.

I do just because I do not want to change plugs that often.  I am at 100K highway right now and no misfires are being detected.  I am changing them this weekend though.


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#8 OFFLINE   enigma-2

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Posted 04 May 2017 - 07:11 PM

Checked my 09 maintenance manual and you are correct, plug change recommended at 90k intervals.

Also noticed something else I didn't remember reading, change fluid in the transfer case at 60k (special conditions).

#9 OFFLINE   akirby

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Posted 04 May 2017 - 07:20 PM

I do just because I do not want to change plugs that often.  I am at 100K highway right now and no misfires are being detected.  I am changing them this weekend though.

 

You don't have to change them, just loosen and retighten.


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#10 OFFLINE   enigma-2

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Posted 12 May 2017 - 11:28 PM

100,000 miles but if you are idling a lot and have heavy stop and go traffic I would recommend about 70K miles.   Those idle hours and sitting in traffic add up quickly as I am finding out with my wife's Edge in comparing miles of operation vs hours of engine operation.

Went back and reread the Maintenance Manual for cars subject to long periods of idling and slow driving (such as Taxi or city traffic, or calif freeway, etc.) and the schedule for spark plug replacment officially drops to 60,000 miles. (Along with a shorter transmission drain interval among other things).
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#11 OFFLINE   macbwt

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Posted 13 May 2017 - 07:25 PM

Went back and reread the Maintenance Manual for cars subject to long periods of idling and slow driving (such as Taxi or city traffic, or calif freeway, etc.) and the schedule for spark plug replacment officially drops to 60,000 miles. (Along with a shorter transmission drain interval among other things).

Yep my wife gets new plugs every two years now.  She drives 10K miles a year but two years would be like 100K miles. LOL


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#12 OFFLINE   rwf78155

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Posted 13 May 2017 - 08:37 PM

Has anyone used titanium plugs or some of the upscale aftermarket plugs and if so whats recommended ?



#13 OFFLINE   autom8r

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Posted 13 May 2017 - 11:32 PM

Ford iridium is recommended. Platinum is also available but may not last as long.
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#14 OFFLINE   rwf78155

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Posted 15 May 2017 - 09:25 PM

Got a Ford Part # for the iridium plugs ?



#15 OFFLINE   autom8r

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Posted 15 May 2017 - 11:13 PM

Seems my memory is failing.

 

My model year is a 2008.

 

The stock plugs for a 3.5L in 2008 are Motorcraft part number AYFS22FM.  They come in a box of 6 under the part number Motorcraft SP411.  The stock plugs for my model year is an iridium enhanced fine wire platinum.  Not entirely iridium.

 

It seems that there is no 100% iridium Motorcraft plug for the Edge.

 

For your model year (2013) Ford went to strictly platinum.  A package of 6 is part number Motorcraft SP-520.

 

The iridium plugs that will fit a 2013 model V6 (and probably out perform the platinum plugs) are:

 

NGK Iridium Ix Spark Plug Part No. 6509

Autolite Iridium XP Spark Plug Part No. XP5363

Denso Iridium TT Spark Plug: ITV20TT Part No. 4719

ACDelco Iridium Spark Plug Part No. 41-988

Denso ITV20 Iridium Power Spark Plug Part No. 5339

 

Link to advance auto parts and iridium plugs.

 

https://shop.advance...chedFrom=header

 

Sorry for the confusion, Good luck.

 

 


Edited by autom8r, 15 May 2017 - 11:14 PM.

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#16 OFFLINE   macbwt

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Posted 16 May 2017 - 05:08 AM

 

Seems my memory is failing.

 

My model year is a 2008.

 

The stock plugs for a 3.5L in 2008 are Motorcraft part number AYFS22FM.  They come in a box of 6 under the part number Motorcraft SP411.  The stock plugs for my model year is an iridium enhanced fine wire platinum.  Not entirely iridium.

 

It seems that there is no 100% iridium Motorcraft plug for the Edge.

 

For your model year (2013) Ford went to strictly platinum.  A package of 6 is part number Motorcraft SP-520.

 

The iridium plugs that will fit a 2013 model V6 (and probably out perform the platinum plugs) are:

 

NGK Iridium Ix Spark Plug Part No. 6509

Autolite Iridium XP Spark Plug Part No. XP5363

Denso Iridium TT Spark Plug: ITV20TT Part No. 4719

ACDelco Iridium Spark Plug Part No. 41-988

Denso ITV20 Iridium Power Spark Plug Part No. 5339

 

Link to advance auto parts and iridium plugs.

 

https://shop.advance...chedFrom=header

 

Sorry for the confusion, Good luck.

 

 

 

I have purchased some of the Iridiums and since they are not specific for the Edge I discovered the gaps to be completely wrong so if you purchase iridiums be ready to attempt to gap the plugs.   I returned them and went back with the MC plugs for platinum.  100K miles on a platinum plug showed gaps at .059, .061 and the rest were at .062 this is based on the OEM setting of .051 approximately before installed. Really great wear IMO and no need to go with the more costly iridiums.


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#17 OFFLINE   IWRBB

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Posted 16 May 2017 - 07:30 AM

The benefit of iridium plugs is not necessarily longer life than platinum plugs- it's that you can run a fine point electrode AND still get long life.  The iridium plug will perform better from idle to redline than the platinum plug with it's larger diameter electrode.  I run NGK Iridium IX plugs in everything, from my weed eater to my 600 HP supercharged Cobra.  The Ford iridium plugs are good too.


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#18 OFFLINE   akirby

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Posted 16 May 2017 - 08:24 AM

You should always gap new plugs yourself just to be safe.


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#19 OFFLINE   macbwt

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Posted 17 May 2017 - 08:13 PM

You should always gap new plugs yourself just to be safe.

I gap mine with a flat blade screw driver and a small hammer.  Is that bad?


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#20 OFFLINE   akirby

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Posted 17 May 2017 - 08:33 PM

I gap mine with a flat blade screw driver and a small hammer.  Is that bad?


Sledge, ball peen or framing?
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