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Old 04-16-2013, 03:45 PM   #1
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stock spark plugs- local store?

Does anyone know a major parts chain that carries the factory plugs?

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Old 04-16-2013, 05:02 PM   #2
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Order from rockauto.com I have used them for tons of parts. Great price and quick shipping.

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Old 04-16-2013, 05:07 PM   #3
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Rockauto is great. I was hoping to pick them up tonight locally.
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Old 04-16-2013, 07:24 PM   #4
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O'Reilly. $3.99 each. :thumbs:
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Old 04-16-2013, 07:35 PM   #5
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What year model? But the 3.8 & 3.6 use platinum 96k mile plugs. Which are Champions if I recall correctly. I know people say they don't believe the 100k mile plug thing. But the plugs do last that long & longer. If they stop doing their job efficiently the little CEL will come on & tell you. I promise you that PCM can detect a problem with your spark plugs way before your but dyno will ever think there is a problem.
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Old 04-16-2013, 08:07 PM   #6
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I called champion. O'Reilly has them and AutoZone. Stock number 7440. $3.99 ea. I have a 2008 3.8
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Old 04-16-2013, 11:01 PM   #7
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Quote:
Originally Posted by crawlin_archer View Post
What year model? But the 3.8 & 3.6 use platinum 96k mile plugs. Which are Champions if I recall correctly. I know people say they don't believe the 100k mile plug thing. But the plugs do last that long & longer. If they stop doing their job efficiently the little CEL will come on & tell you. I promise you that PCM can detect a problem with your spark plugs way before your but dyno will ever think there is a problem.
While plugs last much longer than back in the days when engines still had carbs instead of fuel injection, I don't trust any plug longer than 60K miles.
I promise you plugs can have a worn gap from high miles and the driver will notice drive-ability issues yet there is no CEL because the PCM can't detect this. Been there and experienced that.
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Old 04-17-2013, 12:22 PM   #8
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I promise you plugs can have a worn gap from high miles and the driver will notice drive-ability issues yet there is no CEL because the PCM can't detect this. Been there and experienced that.

This.
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Old 04-17-2013, 06:08 PM   #9
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Unfortunately there are a few things your pcm cannot detect. I have a light miss. Runs rough and no cel. :/
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Old 04-17-2013, 08:25 PM   #10
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Unfortunately there are a few things your pcm cannot detect. I have a light miss. Runs rough and no cel. :/
had the same problem in my 09 at 30000, puled the plugs and regapped them. they weir off by 7 to 12 thousands.
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Old 04-17-2013, 08:37 PM   #11
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had the same problem in my 09 at 30000, puled the plugs and regapped them. they weir off by 7 to 12 thousands.
I replaced the plugs with autolite dbl plat and that didn't cure it. In hate to say it, but it's going to the dealer friday
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Old 04-17-2013, 08:42 PM   #12
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No codes? What shape are your plug wires in?
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Old 04-17-2013, 08:59 PM   #13
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Bosch platinum are also a good alternative. I pulled an OEM one at 30,000 to inspect and cracked the ceramic insulator. No one had the original champion platinum. 2 part stores recommended autolite, but I preferred the Bosch and they've been fine the last 10,000.
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Old 04-17-2013, 11:19 PM   #14
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No codes. All wires ohm'd out within 1000 ohms of each other.

Jeep has 22,000 miles. No warranty (2008) I sure wish I had bought it!
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Old 04-17-2013, 11:38 PM   #15
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Is it a dead miss? If it is find someone with a coil pack to swap with and see of it goes away. I'm not familiar with the 3.8 so I'm not sure what arrangement the coil/s have on it if ots multiples of two, singles or a brick of six.
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Old 04-18-2013, 12:13 AM   #16
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Is it a dead miss? If it is find someone with a coil pack to swap with and see of it goes away. I'm not familiar with the 3.8 so I'm not sure what arrangement the coil/s have on it if ots multiples of two, singles or a brick of six.
Brick of 6. I've thought of that. I think its the coil breaking down. I may post on a local board and ask if someone would let me swap. :thumbs:
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Old 04-18-2013, 12:29 AM   #17
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I know the VW 12v VR6 coils would crack in the insulating plastic fill. The interim fix was RTV smeared on the cracks. You can try ohm checking the coil windings and see what you get. If you get a vastly different resistance on that cylinder then you have your answer.
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Old 04-18-2013, 06:54 AM   #18
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I know the VW 12v VR6 coils would crack in the insulating plastic fill. The interim fix was RTV smeared on the cracks. You can try ohm checking the coil windings and see what you get. If you get a vastly different resistance on that cylinder then you have your answer.
Good tip. I may check it tonight.

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