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What would cause a sparkplug to go Tango Uniform? What would cause a sparkplug to go Tango Uniform?
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4.6 Tech (96-04) Discuss the 1996-2004 2-Valve GT & 4-Valve Cobra

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Old 03-29-2005, 10:51 AM   #1
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What would cause a sparkplug to go Tango Uniform?
One of my plugs are bad in the Cobra (Thanks Toni for testing them!)...they MAY have 5K miles on them...wth would cause this? The car is miss firing, chugging, rough idle...

One other question..who locally sells ngk tr6's? Anyone got the hookup?

thanks
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Old 03-29-2005, 11:02 AM   #2
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Bad plug from the get-go, lil rich/fowled plug?, freak breakage
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Old 03-29-2005, 11:11 AM   #3
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Quote:
Originally Posted by BlKvNm
One other question..who locally sells ngk tr6's? Anyone got the hookup?

thanks
O'Reillys sells NGK plugs........
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Old 03-29-2005, 11:18 AM   #4
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Originally Posted by VIC
O'Reillys sells NGK plugs........
Awesome, thanks Vic...I've got one right down the road from the house...
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Old 03-29-2005, 11:20 AM   #5
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Quote:
Originally Posted by BlKvNm
The car is miss firing, chugging, rough idle...
BLKVNM or the LX?
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Old 03-29-2005, 11:21 AM   #6
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Originally Posted by Rob97GT
BLKVNM or the LX?
BV
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Old 03-29-2005, 11:34 AM   #7
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Quote:
Originally Posted by BlKvNm
BV
:redrum: :redrum: BV has 5000 miles??? :holycrap: :holycrap:
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Old 03-29-2005, 11:42 AM   #8
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:redrum: :redrum: BV has 5000 miles??? :holycrap: :holycrap:
No, but the plugs do! BV hit 11k yesterday
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Old 03-29-2005, 11:49 AM   #9
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what do you gap them at?
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Old 03-29-2005, 11:51 AM   #10
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Maybe that one has a crack or something....
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Old 03-29-2005, 11:51 AM   #11
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Originally Posted by 86sleeper
what do you gap them at?
35
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Old 03-29-2005, 11:55 AM   #12
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.35 or .035. ?
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Old 03-29-2005, 12:13 PM   #13
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Maybe there were cobwebs
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Old 03-29-2005, 12:17 PM   #14
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Originally Posted by 86sleeper
.35 or .035. ?
whoa! .35? Can they even be gapped that big? .035 sorry...I will be setting the new ones to that as well...

And Mitch...I was pondering whether or not the car collecting dust could affect the plugs' performance...
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Old 03-29-2005, 12:30 PM   #15
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Quote:
Originally Posted by code3GT
Maybe there were cobwebs
I know it's a joke, but if a car does sit too long without being run, the plugs can corrode enough to go bad.
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Old 03-29-2005, 01:34 PM   #16
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Question
Why is this in 5.0 tech super admin guy? :redrum:
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Old 03-29-2005, 01:37 PM   #17
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I think its because you will not take it to the track
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Old 03-29-2005, 01:45 PM   #18
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Why is this in 5.0 tech super admin guy? :redrum:
What are you talkin' about? It's in the 4.6 section! :jmg680:
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Old 03-29-2005, 08:24 PM   #19
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In my opinion, I agree with the "bad plug from the get-go". Maybe running too rich on one cylinder can be cause by a leaking injector or a sensor going bad, .... . I always find that the more you try to keep a mustang garage kept, the more they break .
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Old 03-29-2005, 09:13 PM   #20
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Like the others have said, bad plug from the beginning. Other possibilities are a misfiring injector or coil pack.
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