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2012 5.0,lots of smoke cylinder 8 misfire.

Old 7/31/11, 09:38 AM
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2012 5.0,lots of smoke cylinder 8 misfire.

Driving home last night I noticed the check engine light flashing on and off. I check my rearview mirror and notice a lot of smoke I thought my car was gonna explode so I put my gun in my waistband grab my wallet and phone take my seat belt off just incase I needed to jump out of the car Lol. I was in The city of Detroit in a really bad area so I drove about 5 minutes to a neighboring city where it's safe. Checked the code and it's a cylinder 8 misfire code. What to do? Any ideas guys?
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Old 7/31/11, 09:43 AM
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uhh oo.... hope u didnt kill cyclinder 8.... you will need to do a compression check on number 8 cylinder.. whos tune are you runnign?
Old 7/31/11, 09:46 AM
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Someone is getting ready to have a power train warranty voided by Ford
Old 7/31/11, 09:50 AM
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Originally Posted by ShaneGT
uhh oo.... hope u didnt kill cyclinder 8.... you will need to do a compression check on number 8 cylinder.. whos tune are you runnign?
Brenspeed tune, I think I've read that it's pretty common for cylinder 8 to misfire on the 5.0's.

Later on when I was able to stop I noticed that all the smoke was from the exhaust. There was just so much of it. It seemed like it was on fire lol.
Old 7/31/11, 09:55 AM
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These are picture of my last Mustang. 2010 GT.

Pic 1 - robbed at gun point by 3 guys and one girl during the day in Detroit lol.

Pic2- hit and run in Detroit.
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Old 7/31/11, 09:55 AM
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Good luck on getting it fixed through the dealer. Hopefully they wont void your warranty.
Old 7/31/11, 09:59 AM
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Originally Posted by Joe_in_Naples
Good luck on getting it fixed through the dealer. Hopefully they wont void your warranty.
Thanks
Old 7/31/11, 10:08 AM
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Wow bro if it's not one thing it's another for you. You just finished going through hell with your trans swap and now the other side of it fails for ya. Hope it's something minor and not a blown piston. But with the rate things are going I'd suspect you have a hefty repair bill coming. Good luck man
Old 7/31/11, 10:50 AM
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Probably a bad coil or maybe faulty injector.
Old 7/31/11, 12:01 PM
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Originally Posted by unas2k5
Driving home last night I noticed the check engine light flashing on and off. I check my rearview mirror and notice a lot of smoke I thought my car was gonna explode so I put my gun in my waistband grab my wallet and phone take my seat belt off just incase I needed to jump out of the car Lol. I was in The city of Detroit in a really bad area so I drove about 5 minutes to a neighboring city where it's safe. Checked the code and it's a cylinder 8 misfire code. What to do? Any ideas guys?
From what I've read you could have a failed #8. Have a compression test done on the engine and you will know for sure.

Last edited by TheReaper; 7/31/11 at 12:02 PM.
Old 7/31/11, 12:16 PM
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Originally Posted by TheReaper
From what I've read you could have a failed #8. Have a compression test done on the engine and you will know for sure.
What's the repair cost if this happens?
Old 7/31/11, 12:35 PM
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Originally Posted by Adam
What's the repair cost if this happens?
I've read it's about 3k at a Ford dealer.

Last edited by TheReaper; 7/31/11 at 12:36 PM.
Old 7/31/11, 12:40 PM
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Originally Posted by TheReaper
I've read it's about 3k at a Ford dealer.
correct, if you didnt damage the cylinder yes.. if the cylinder is scared up.. expect more.
Old 7/31/11, 01:57 PM
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Originally Posted by unas2k5
These are picture of my last Mustang. 2010 GT.

Pic 1 - robbed at gun point by 3 guys and one girl during the day in Detroit lol.

Pic2- hit and run in Detroit.
Those streets is cold!
Old 7/31/11, 02:09 PM
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Well that sucks. Hope its not too bad.
Old 7/31/11, 02:17 PM
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The symptoms scream cylinder 8 failure to me. Which makes me wonder something. You were having problems with your VCT function after the transmission swap right? Maybe this has something to do with the failure as well. So the whole crux of the issue might not have anything to do with base ignition timing, but rather how the cam timing is handled at various RPM's.
Old 7/31/11, 02:33 PM
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I would at the very least return the car to stock before you take it in. I know they cab find out if it's been tuned but no reason to tip them off.
Old 7/31/11, 02:35 PM
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Originally Posted by going for broke
I would at the very least return the car to stock before you take it in. I know they cab find out if it's been tuned but no reason to tip them off.
That might be a little difficult.
Old 7/31/11, 03:22 PM
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Originally Posted by BlackOut2k11
The symptoms scream cylinder 8 failure to me. Which makes me wonder something. You were having problems with your VCT function after the transmission swap right? Maybe this has something to do with the failure as well. So the whole crux of the issue might not have anything to do with base ignition timing, but rather how the cam timing is handled at various RPM's.
A blown 15 Amp mini fuse that went go the hego sensors.
Old 7/31/11, 03:44 PM
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thats what was wrong???

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