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Unread 08-02-2009, 08:38 PM   #1
cloiselle
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spark plug diagnosis






any one see anything in particular going on inside my engine from these plugs i just pulled ( 08-02-09 )

ngk 6987 copper v powers came out and champion copper oem's went in.







i would like to think it's " normal " but anyone with more experience, and legitimate experience. please chime in.

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Unread 08-02-2009, 08:42 PM   #2
jeep0312
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look pretty normal too me! at least i hope! i just changed mine that looked similar in color
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Unread 08-02-2009, 09:25 PM   #3
vansskaterfreek
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normal... they didn't even look that worn...
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Unread 08-02-2009, 09:29 PM   #4
cloiselle
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i was starting to see a drop in mpg and throttle response, changed the plugs, cleaned the airbox and amsoil filter and cleaned my throttle body. back to normal again

i only run plugs 20k miles. for $16, why not.
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Unread 08-02-2009, 10:00 PM   #5
malibubts
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They look just fine. If I had to say anything worn, but they are far from from it.
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Unread 08-03-2009, 12:01 AM   #6
Kruzin
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They look to be in great shape.
Not worth replacing.
Lots of miles left on them.
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Unread 08-03-2009, 12:22 AM   #7
HighLonesome
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Quote:
Originally Posted by cloiselle View Post
[IMG]ngk 6987 copper v powers came out and champion copper oem's went in
Probably a downgrade. Why are you messing with the plugs in the first place?
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Unread 08-03-2009, 12:26 AM   #8
cloiselle
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Quote:
Originally Posted by five.nein View Post
Probably a downgrade.
quite an upgrade, mpg , throttle response up, operating temp's down.

ngk copper v's are the same thing as any regular copper core plug, they just have a v slotted into the electrode which does nothing, google psychosomatic.
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Unread 08-03-2009, 12:27 AM   #9
cloiselle
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Quote:
Originally Posted by five.nein View Post
Probably a downgrade. Why are you messing with the plugs in the first place?

oh hell, i know right.


WHY BOTHER WITH BASIC MAITENENCE.

not like i want to get the best life and efficiency out of my vehicle anyways,

that care crap is garbage



i hear the greatest stuff online.
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Unread 08-03-2009, 12:32 AM   #10
HighLonesome
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carry on soldier
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Unread 08-03-2009, 06:26 AM   #11
kentman
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The manual recommends 30K on plugs. You should not need to do them sooner than that. If you choose to go shorter than the recommendation, then when do you stop. 20K is probably better than 30K. 15K should be better than 20K. 10K has to be better than 15K. I just go with the manual numbers.

If the part looks horrible at the manual recommendation, then I shorten the interval the next time until I find something that works. I do the same thing on extensions from the manual. If the part looks perfect at the manual recommendation, then I will decide the next time if I want to extend things. Timing belts are a good example. The manual recommends 50K miles, but I let it ride to about 70K miles. Timing belt jobs are a major pain.

Also, since you did multiple things, it is hard to tell which is the source of performance improvement. The cleanings may have done it, and the plugs may have done nothing.
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Unread 08-03-2009, 09:19 PM   #12
vansskaterfreek
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i have always put the champions in my jeeps, thats what it calls forfrom the factory, thats what goes in it.... i always run the champions...at like $2 a plug you cannot beat that
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2004 WJ 4.7L 107k miles - her daily driver, 2" daystar BB with scorpion shocks.. not too bad! stuffed 265/65/17 General Grabber AT2'S
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Unread 08-03-2009, 09:23 PM   #13
rooster51
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my zj gets bi-polar and Terets Syndrom if I run anything other than cheap Champions or Autolites.
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Unread 08-03-2009, 10:51 PM   #14
wickerham
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autolites in everything i've ever run...all the way
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Unread 08-04-2009, 12:18 AM   #15
cloiselle
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i did see some peculiar behavior at the end of those ngk's run.

odd startup, lack of throttle response and a drop in mpg. like i've said, i think the oem part is the way to go although i went with a different champion plug , same heat range and core though. almost the same
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