Spark plug blown out of head. - Mustang Evolution

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Old 06-27-2011, 06:46 AM   #1
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Spark plug blown out of head.

I was driving done the road the other day and the car (2004 gt mustang) and it started making a really loud popping type sound. I popped the hood and the third coil pack on the left side has hanging halfway out of the motor. I pulled it out and it was all destroyed. The plug was just sitting in the motor. So I pulled it out and tried rescrewing it back in and it wouldn't screw in. So right now I'm at a loss and dont know what to do. Any advice or help on what to do would be awesome. Thanks.
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Old 06-27-2011, 06:59 AM   #2
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Are the threads going into the block stripped?
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Old 06-27-2011, 08:14 AM   #3
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I would imagine that they are because the spark plug won't even try to grab when I'm tightening it it. It won even act like it's trying to cross thread.
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Old 06-27-2011, 08:17 AM   #4
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Quote:
Originally Posted by 1bad2v
I would imagine that they are because the spark plug won't even try to grab when I'm tightening it it. It won even act like it's trying to cross thread.
Get a light and look down in there
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Old 06-27-2011, 08:25 AM   #5
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Re: Spark plug blown out of head.

it s common on the 4.6 , go to your local parts store ,they make a kit for Fords / motormite ( help ) makes one, part # 42025
it has a new insert that self taps into your cylinder head ,then you put there spark plug into that insert , remember to loc-tite the insert in so next time you take the plug out the insert stays in ......
heli coil also makes a kit ,with just a small insert ,but with there's you have to tap a new set of threads into the head then put the insert in ...
either way its not a hard fix ... oh ya after you tap the head and put the insert in .crank the engine over with the spark plug out to blow the head shavings out of the cylinder before you put the spark plug back in ......
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Old 06-27-2011, 08:29 AM   #6
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Originally Posted by stampde
it s common on the 4.6 , go to your local parts store ,they make a kit for Fords / motormite ( help ) makes one part # 42025
it has a new insert that self taps into your cylinder head ,then you put there dpark plug into that insert , remember to loc-tite the insert in so next time you take the plug out the insert stays in ......
heli coil also makes a kit ,with just a small insert ,but with theres you have to tap a new set of threads into the head then put the insert in ...
either way its not a hard fix ... oh ya after you tap the head and put the insert in .crank the engine over with the spark plug out to blow the head shavings out of the cylinder before you put the spark plug back in ......
The for house can do it also. The kit we use has a Dow pin that locks the insert in place so it won't ever back out. The tools to do this style cost 1000$. The ford house charges around 200$ to do it with this set if I remember right. Worst case scenario is you will need a new head installed
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Old 06-27-2011, 09:36 AM   #7
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Just re tap it your self. Super easy to do. Just make sure you use the same size n thread. I have to do this every-time I change my plus haha
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Old 06-27-2011, 09:41 AM   #8
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Originally Posted by Brett Greene
Just re tap it your self. Super easy to do. Just make sure you use the same size n thread. I have to do this every-time I change my plus haha
Lol not good!
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Old 06-27-2011, 10:31 AM   #9
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Re: Spark plug blown out of head.

Does that problem happen often I have a 06 GT is it a common occurance?
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Old 06-27-2011, 10:35 AM   #10
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Originally Posted by Texastboneking

Lol not good!
It's cause I hate doing it and always rush. I would say all my plug holes in my 95 have been re tapped. As my my 2011 5.0 I haven't had to change them yet lol
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Old 06-27-2011, 10:47 AM   #11
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Originally Posted by wereKEV
Does that problem happen often I have a 06 GT is it a common occurance?
Very common on 3vs
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Old 06-27-2011, 10:51 AM   #12
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Re: Spark plug blown out of head.

not so common on 4 vlaves , but I have put steel inserts in all my plug holes just in case ..........
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Old 06-27-2011, 11:09 AM   #13
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Re: Spark plug blown out of head.

What causes it to happen?
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Old 06-27-2011, 12:30 PM   #14
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What causes it to happen?
Just happens. Poor design.
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Old 06-28-2011, 11:30 AM   #15
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Re: Spark plug blown out of head.

Great than with my bad *** luck it will happen to me for sure.
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Old 06-28-2011, 11:33 AM   #16
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Great than with my bad *** luck it will happen to me for sure.
Have fun
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Old 07-03-2011, 08:26 PM   #17
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Well. I've tried damn near all my options. I'm almost tempted to put it all back together and blow it out by cranking it over
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Old 07-03-2011, 09:29 PM   #18
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Originally Posted by 1bad2v
Well. I've tried damn near all my options. I'm almost tempted to put it all back together and blow it out by cranking it over
There is a tool they sell that goes through the broken part. Expands. And then twists it out. Can't remember the name of it though...
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