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Anyone Read Plugs?

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Old 12-22-2012, 10:01 AM
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Anyone Read Plugs?

'03 5.4 gas motor, changed plugs at 165,946 miles:



Supposedly changed at 100K miles but not sure, just looking for any input about their condition or whether there's something amiss inside the engine?

Will say plug #3 was loose, thought it was a leaking exhaust stud at first. It did torque down properly and hold with the new plug.

Thanks in advance guys----looking forward to any thoughts or ideas!
 
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Old 12-23-2012, 07:44 PM
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Photo Link Restored

Photo link was incorrect, still hoping for some feedback or opinions!
 
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Old 12-23-2012, 09:42 PM
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#2 & 7 have signs of pre-ignition (pinging), #8 is a little lean (but not unusual)- of course photos can be a little decieving but assuming they have 50k miles on them, aside from the electrodes appearring a little worn, the porclin color looks good...I don't see any carbon build-up which would indicate leaks...I would say I would run a little better grade of fuel and it looks good!
 
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Old 12-24-2012, 04:39 AM
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Thanks BK! I see the similar appearance to the electrodes in plugs #2 & #7 now that you mention it.

I will run the better gas, perhaps changing to the 89 octane and adding Techron occasionally.
 
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