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re: F150 Spark plug replacement diy

Posted on 2/10/15 at 1:28 pm to
Posted by VetteGuy
Member since Feb 2008
28345 posts
Posted on 2/10/15 at 1:28 pm to
Man, I'd check the interval on those.

A lot of plugs go 100K.
Posted by PapaPogey
Baton Rouge
Member since Apr 2008
39550 posts
Posted on 2/10/15 at 1:30 pm to
I already have the plugs so I might as well just do it. It can only help
Posted by weadjust
Member since Aug 2012
15160 posts
Posted on 2/10/15 at 5:14 pm to
quote:

A lot of plugs go 100K.


I got a 135K on my original 4.6 F150 spark plugs. I bought replacements at about 90K and planned to install them when the gas mileage started dropping off. Still rolling on OEM.
Posted by Clames
Member since Oct 2010
16640 posts
Posted on 2/10/15 at 7:16 pm to
100k is a conservative interval with OEM double platinum or iridium plugs. I pulled a set that had almost 200k on them and they had only eroded maybe 15 thousandths over spec on the worst ones.
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