Spark Plug Question

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#11

02-25-2013, 10:32 AM

iMuf

Thread Starter

Join Date: Jan 2013

Posts: 872

Quote:

Originally Posted by ChibiBlackSheep

Remember my post gave a year range. Stuff does go bad over time, not just over mileage. Iridium is supposed to be good for 7 years, and you are at the 7 year mark.

I got you, I may pull them out and just have a look.

#12

02-25-2013, 07:47 PM

farmerjg

Join Date: Jun 2010

Posts: 174

Slight hijack here. How do bad plugs manifest themselves? I'm at 9 years and 120k miles and am yet to know if I have a problem, unless I really do and don't know it.

Heck, my 92 F150 with 125k miles still has original copper plugs.

#13

02-25-2013, 08:09 PM

sixscarlo

Join Date: Feb 2012

Posts: 113

The factory plugs are ac delco iridium. gap them to .06 an inch. They run about 7 bucks a plug at auto zone.

#14

02-26-2013, 09:25 AM

ChibiBlackSheep

Monte Of The Month -- August 2014

Join Date: Sep 2008

Location: Southeast PA

Posts: 25,136

Bad plugs start to break/lose their elements on the plug. The plug could also gather deposits on it and no longer spark as hot as it should to detonate the fuel properly.

Copper plugs should be changed very frequently, like every 10k miles haha

#15

02-26-2013, 11:26 AM

STUMPMI

Monte Of The Month -- February 2013

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Join Date: Dec 2011

Location: Taylor Michigan

Posts: 9,944

Quote:

Originally Posted by ChibiBlackSheep

Remember my post gave a year range. Stuff does go bad over time, not just over mileage. Iridium is supposed to be good for 7 years, and you are at the 7 year mark.