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#4559423 - 10/30/17 04:36 PM bad plug
Taildragger Offline


Registered: 10/17/10
Posts: 437
Loc: SW Florida
Couldn't get a clean mag check. Wonder why.

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#4559428 - 10/30/17 04:44 PM Re: bad plug [Re: Taildragger]
Rand Offline


Registered: 08/20/03
Posts: 12638
Loc: NE,Ohio
Is that a spark plug fouled with leaded fuel deposits?

Kind of cryptic picture and title.. until I noticed the forum subsection.
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#4559430 - 10/30/17 04:47 PM Re: bad plug [Re: Taildragger]
46Harry Offline


Registered: 01/08/12
Posts: 408
Loc: hawthorne, Ca.
How many hours on the plugs since they were last cleaned. If my eyes aren't deceiving me, it looks like the porcelain is cracked. You got your money's worth out of that plug as the center electrode has the football shape of a high time plug. What engine did the plug come from?

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#4559499 - 10/30/17 06:31 PM Re: bad plug [Re: Taildragger]
Taildragger Offline


Registered: 10/17/10
Posts: 437
Loc: SW Florida
Log books show that is was inspected in accordance to,,,,, no mention of plugs.
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#4559521 - 10/30/17 06:36 PM Re: bad plug [Re: Taildragger]
CT8 Online   content


Registered: 10/09/14
Posts: 10942
Loc: Idaho
That is why there are 2 of banana each !
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#4559582 - 10/30/17 07:20 PM Re: bad plug [Re: Taildragger]
fields Offline


Registered: 04/11/03
Posts: 120
Loc: TX
You got the good out of that one! i would look at all of them.

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#4559626 - 10/30/17 07:50 PM Re: bad plug [Re: fields]
Taildragger Offline


Registered: 10/17/10
Posts: 437
Loc: SW Florida
Originally Posted By: fields
You got the good out of that one! i would look at all of them.


Hmm, okay. Good idea. wink

BTW, not my airplane, just working on the annual inspection.
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#4559675 - 10/30/17 08:40 PM Re: bad plug [Re: Taildragger]
maximus Offline


Registered: 01/24/08
Posts: 723
Loc: TX
Plane probably got Parker annuals for the past decade.
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#4559706 - 10/30/17 09:23 PM Re: bad plug [Re: Taildragger]
fields Offline


Registered: 04/11/03
Posts: 120
Loc: TX
Ah OK-thought it was your plane. You took a great picture.

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#4560115 - 10/31/17 11:12 AM Re: bad plug [Re: Taildragger]
wings&wheels Offline


Registered: 12/05/03
Posts: 581
Loc: New England, USA
Not the worse fouling I've seen, but that plug has seen a full life.

I like fine wires, $$ but worth it in our experience.

What is the plug mounted in for the picture?
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#4560268 - 10/31/17 02:14 PM Re: bad plug [Re: maximus]
Yah-Tah-Hey Offline


Registered: 05/26/14
Posts: 3396
Loc: Columbus,Nebraska
Originally Posted By: maximus
Plane probably got Parker annuals for the past decade.
Oh yow. A P-51(Parker 51) annual. Probably done by a Spartan grad. banana

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#4560586 - 10/31/17 07:34 PM Re: bad plug [Re: wings&wheels]
Taildragger Offline


Registered: 10/17/10
Posts: 437
Loc: SW Florida
Originally Posted By: wings&wheels
Not the worse fouling I've seen, but that plug has seen a full life.

I like fine wires, $$ but worth it in our experience.

What is the plug mounted in for the picture?


A plug caddy, a darn handy device! The cracked insulator really surprised me.


Edited by Taildragger (10/31/17 07:35 PM)
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#4560672 - 10/31/17 09:12 PM Re: bad plug [Re: wings&wheels]
Taildragger Offline


Registered: 10/17/10
Posts: 437
Loc: SW Florida
Originally Posted By: wings&wheels


What is the plug mounted in for the picture?


http://www.aircraftspruce.com/catalog/topages/sparkplugtray.php?clickkey=3028107

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#4560927 - 11/01/17 07:23 AM Re: bad plug [Re: Taildragger]
Cujet Offline


Registered: 02/15/03
Posts: 7146
Loc: Jupiter, Florida
Iíve had a few go bad over the years. Not all that common, but not unusual.
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#4561372 - 11/01/17 04:29 PM Re: bad plug [Re: Taildragger]
wings&wheels Offline


Registered: 12/05/03
Posts: 581
Loc: New England, USA
Originally Posted By: Taildragger
Originally Posted By: wings&wheels


What is the plug mounted in for the picture?


http://www.aircraftspruce.com/catalog/topages/sparkplugtray.php?clickkey=3028107



Like that. I just have the standard Aircraft Spruce sheet steel one.
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'05 Lotus Elise S/C
'85 Land Rover 90 diesel
'74 Triumph TR6
'72 Land Rover Series III 88"
'99 Porsche 996/'01 Boxster S (Wife's...)
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