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Careful 5.0 owners. #8 Cylinder looks to be failing

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MusicMan66
BASixxer
Shelby10'
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Bold Moves Mustang Club of Tulsa :: Forums :: Performance and Tech :: 2011+ Mustang

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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Careful 5.0 owners. #8 Cylinder looks to be failing

Post by Shelby10' 9/1/2011, 12:51 am

Here is a LONG thread about a members dilemma and the symptoms with the #8 cylinder letting go and what he did afterwards.

http://forums.themustangsource.com/f726/2012-5-0-lots-smoke-cylinder-8-misfire-498176/
Shelby10'
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by BASixxer 9/1/2011, 5:59 am

yikes. no bueno.
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by MusicMan66 9/1/2011, 9:17 am

I've read several of those threads on TMS about the #8 cylinder. It makes me glad I have a 4.6. :D

Seriously, Ford is aware of the issue and should have it worked out soon.
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by BASixxer 9/1/2011, 9:24 am

Steve, I don't like you avatar... should change it.
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by MusicMan66 9/1/2011, 9:26 am

amentowasso wrote:Steve, I don't like you avatar... should change it.
HA! No way, dude.
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by 03.sonicblue 9/1/2011, 10:22 am

Lee, I dont like your avatar, you should change it.
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by BASixxer 9/1/2011, 11:33 am

It's just a Mustang. applause
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by Psycho Bob 9/1/2011, 12:07 pm

i'm with lee on this one. change or banned

loser

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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by MusicMan66 9/1/2011, 5:44 pm

Psycho Bob wrote:i'm with lee on this one. change or banned

loser
Yeah... good luck with that. Careful 5.0 owners. #8 Cylinder looks to be failing 852292
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by Shelby10' 9/1/2011, 6:19 pm

#8 cylinder isnt wide spread and some believe it was due to tuners trying to figure out the motor and its limits.

Just wierd that its only the #8? Makes you wonder why the weak link?
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by Metric7 9/1/2011, 6:45 pm

It's due to design of the cooling passages in the Coyote engine - #8 cylinder has the least amount of coolant lines surrounding it and therefore reaches higher temps than any of the others. I think the tunes are just highlighting an inherent design flaw, causing that cylinder to fail sooner than it would under stock programming.
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by Shelby10' 9/1/2011, 7:27 pm

Metric7 wrote:It's due to design of the cooling passages in the Coyote engine - #8 cylinder has the least amount of coolant lines surrounding it and therefore reaches higher temps than any of the others. I think the tunes are just highlighting an inherent design flaw, causing that cylinder to fail sooner than it would under stock programming.

I was not aware of the coolant passages and your theory is sound. Wonder how ford will address this.

Also you would think that the boosted 5.0s running around would have the issue first, but there are quite a few running around and no issues what-so-ever...and a lot of guys Naturally Aspirated showing problems.

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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by BASixxer 9/2/2011, 6:49 am

Trick Flow heads installed under a recall program
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

Post by 07Shelby500 9/2/2011, 8:09 am

Interesting.
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Careful 5.0 owners. #8 Cylinder looks to be failing Empty Re: Careful 5.0 owners. #8 Cylinder looks to be failing

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