exhaust housing is smoking?? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 7 Old 11-24-2006, 09:01 PM Thread Starter
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Thumbs down exhaust housing is smoking??

Hey guys i was running my car this afternoon and the exhuast housung was smoking when i shut it off? it wasn't glowing orange or anything like that, any ideas?

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post #2 of 7 Old 11-26-2006, 05:16 PM
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How hard were you running the car before turning it off?


2003 Ford F150 Supercrew--------1996 Ford Mustang
Stroked BBF------------------------2.3t
Garrett 98mm turbocharger------12.10 @ 114 mph
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post #3 of 7 Old 11-26-2006, 06:14 PM Thread Starter
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very hard , only for a mile or so, i was trying to set the manuel boost controller, i am not having much luck i cannot get the boost to stay under 17, i feel that i have tried everything, i have a 14.7 spring in the wastegate and in the bov also, i haven't noticed the smoke today though
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post #4 of 7 Old 11-26-2006, 06:17 PM
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If you've working around the turbo much, the smoke was probably oily residue from your hands.

Also, tsk tsk on shutting it down after driving it so hard . Next time, go drive around for a few minutes to let everything slowly cool down.

Have a good day!
Michael

2003 Ford F150 Supercrew--------1996 Ford Mustang
Stroked BBF------------------------2.3t
Garrett 98mm turbocharger------12.10 @ 114 mph
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post #5 of 7 Old 11-27-2006, 02:06 PM Thread Starter
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Ahh is see on the oily residue, but why drive around for a few minutes, i hear the turbo still spinning after i shut the car off?
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post #6 of 7 Old 11-27-2006, 04:22 PM
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When driven hard, the turbo gets extremely hot (hence the smoke) very quickly. If you turn it off without giving it time to cool down, the oil just sits in the turbo and cooks. This is what people mean when they say 'coking'. This is a primary reason for turbo failures.

On the other hand, if you drive around for a few minutes before shutting it down, the oil circulates through the turbo and cools it off. Since the oil circulates (instead of just sitting there), it doesn't cook.

Have a good day!
Michael

2003 Ford F150 Supercrew--------1996 Ford Mustang
Stroked BBF------------------------2.3t
Garrett 98mm turbocharger------12.10 @ 114 mph
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post #7 of 7 Old 11-28-2006, 08:55 AM Thread Starter
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okay thanks
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