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05-27-2013, 07:42 PM
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#1 |
 Drives: 2012 ZL1 2002 Silverado, 2010 Prius Join Date: Apr 2012
Location: Kalama, Washington
Posts: 94
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Hole on back of muffler
I'v been saying to myself all along that what I'm seeing coming out of the exhaust is condensation heat and cold air but can anyone tell me what the hole is for? Looks like a drain hole. And it's spotting the garage floor pretty regulary.
I'm sure it's normal but can anyone tell me where all the oily shean is coming from? ..... 
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05-27-2013, 07:46 PM
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#2 |
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Let's go Rangers!
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Hole is Normal, oil sheen not. Are you sure it's oil and not carbon?
Sent from my 2SS/RS
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 Soprano 4/1/00-6/14/11, Gone but NEVER forgotten! FSP tuned: 377/389 |
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05-27-2013, 07:59 PM
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#3 | |
          Drives: Camaro's, always have, always will. Join Date: Oct 2010
Location: Home of the brave
Posts: 4,851
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Quote:
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In Scott We Trust...all others must show proof.
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05-27-2013, 08:01 PM
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#4 | |
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Drives: 2012 ZL1 2002 Silverado, 2010 Prius Join Date: Apr 2012
Location: Kalama, Washington
Posts: 94
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Quote:
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05-27-2013, 08:03 PM
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#5 | |
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Drives: 2012 ZL1 2002 Silverado, 2010 Prius Join Date: Apr 2012
Location: Kalama, Washington
Posts: 94
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Quote:
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05-27-2013, 08:03 PM
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#6 |
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knows 2 facts about ducks
Drives: ...and they're both wrong Join Date: Aug 2009
Location: The HMS Invincible
Posts: 25,072
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Do you have a catch can?
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05-27-2013, 08:05 PM
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#7 |
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Drives: Camaro's, always have, always will. Join Date: Oct 2010
Location: Home of the brave
Posts: 4,851
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...if you don't stand on it occcassionaly, and only run it a low speed carbon accumulates in the exhaust system. Blowing out the buildup once in awhile will eliminate this stain on your floor.
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In Scott We Trust...all others must show proof.
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05-27-2013, 08:10 PM
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#8 | |
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Drives: 2012 ZL1 2002 Silverado, 2010 Prius Join Date: Apr 2012
Location: Kalama, Washington
Posts: 94
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Quote:
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05-27-2013, 08:12 PM
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#9 |
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Drives: 2012 ZL1 2002 Silverado, 2010 Prius Join Date: Apr 2012
Location: Kalama, Washington
Posts: 94
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Thanks all for quick imput......
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05-27-2013, 08:13 PM
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#10 |
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Drives: Camaro's, always have, always will. Join Date: Oct 2010
Location: Home of the brave
Posts: 4,851
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...no, the catch can will eliminate the oil ingestation into the super charger and intake manifold. The oil buildup will degrade your engine performance over time, but not lead to a stain in the water condensation dropping to the floor during normal warm up.
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In Scott We Trust...all others must show proof.
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05-27-2013, 08:29 PM
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#11 |
Drives: 2013 ZL1 Join Date: Oct 2012
Location: Dubai
Posts: 757
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did you remove your catalytic converters? Also does the car have a tune in it perhaps?
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 1150bhp Whipple 4.0 Supercharged 427ci Camaro ZL1 |
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05-27-2013, 08:40 PM
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#12 |
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Drives: Camaro's, always have, always will. Join Date: Oct 2010
Location: Home of the brave
Posts: 4,851
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..it's carbon buildup in the factory exhaust system....it's need to not idle so much, not be be thought of like a passenger vehicle, or babied. It will build up and accumulate carbon over time unless one stands on it and blows it out of the system. That, or it's throwing a CEL for running rich.
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In Scott We Trust...all others must show proof.
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05-28-2013, 01:02 AM
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#13 | |
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BAD ZL1
Drives: 2013 VIN 48 Victory Red ZL1! Join Date: Jan 2012
Location: California
Posts: 707
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Quote:
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05-28-2013, 06:18 AM
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#14 |
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I Carry!
Drives: 2013 CRT ZL1 Join Date: Jul 2011
Location: Fletcher, Ok
Posts: 2,722
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This is a drain hole for water
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