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08-25-2017, 06:31 PM
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#1 |
 
Drives: 2013 Black ZL1 Join Date: Nov 2015
Location: Ky
Posts: 84
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What can cause oil to come out the exhaust?
The other day i just pulled out of the driveway and just tap the gas, then i heard a noise in the engine and the stabilitrak light came on and all i seen was smoke pouring from the back of the ZL1...l was lucky that i was not far from the house...when i got home i pop the hood and there was a small fire on the passenger side fire wall...after putting that out i notice there was a lot of oil coming from my exhaust..i mean a lot, there is a trail of it when i pulled in my driveway....what happen to my car?
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08-25-2017, 06:56 PM
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#2 |
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Banned
Drives: Camaro Join Date: Mar 2013
Location: USA
Posts: 2,701
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Rings, values, Pistons come to mind. However, I don't see how oil out the tailpipes relates to a small fire in the engine compartment.
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08-25-2017, 08:31 PM
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#3 | |
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Resident nomad
Drives: 2014 Summit White 1SS/1LE Join Date: Nov 2015
Location: Gilbert, AZ
Posts: 1,765
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Quote:
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08-25-2017, 08:32 PM
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#4 |
   Drives: Z06 wannabe Join Date: Feb 2015
Location: Daytona Beach, FL
Posts: 1,200
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Blew a hole somewhere and shot oil multiple directions?
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Apex Focused
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08-25-2017, 09:50 PM
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#5 | |
  Drives: ZL1, 2013, tri-coat-red, manual Join Date: Nov 2013
Location: Michigan
Posts: 1,607
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Quote:
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08-25-2017, 10:56 PM
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#6 |
 Drives: 2014 corvette Join Date: Oct 2016
Location: tn
Posts: 36
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Pics??
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08-26-2017, 02:15 PM
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#7 |
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Big Crow
Drives: '13 ZL1 Join Date: Mar 2017
Location: California
Posts: 1,493
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I am thinking something serious like they said that caused a hole in the piston or block and also squirted oil on the exhaust. Sounds like a new engine. But hard to say for sure, could be someone overfilled the oil and dribbled it over the engine which later caught fire and foamed and ended up out the tailpipe. Or transmission cooler line leaking and start fire and the smoke wasn't out of the tailpipe but from under the car. Don't know how any of those tie into the stabilitrak light however.
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08-26-2017, 02:45 PM
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#8 |
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KaBoom1701
Drives: 13' ZL1 Red M6 Join Date: Dec 2012
Location: I.E. SoCal (Yucaipa)
Posts: 8,630
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How many miles on the car?
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08-26-2017, 05:09 PM
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#9 | |
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Drives: 2013 Black ZL1 Join Date: Nov 2015
Location: Ky
Posts: 84
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Quote:
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08-26-2017, 05:13 PM
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#10 |
Drives: 97 Z28 M6, black! Join Date: Mar 2012
Location: NE Miss...
Posts: 60
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Gaskets like valve cover gaskets can only hold a small amount of crankcase pressure. If you break/pinch a piston ring or have a hole in a piston the crankcase is exposed to cylinder pressure. This is what we call "blow by" in other words combustion is going down into the crankcase instead of just out the tail pipe like normal.
The gas/oil mix blows out where ever it can find to escape and the sloshing oil also runs out the exhaust every time the exhaust valve opens. |
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08-27-2017, 09:13 PM
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#11 |
 
Drives: 02 Z06, 95 Trans Am, 2012 ZL1 Join Date: Mar 2012
Location: Southeast
Posts: 1,838
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If you are losing oil out the exhaust enough to leave a trail you probably have a hole in the piston.
Time for a new engine.
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 Bryan 2018 ZL1 M6 |
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08-27-2017, 10:31 PM
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#12 |
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Pay attention to details
Drives: 2012 ZL1 Join Date: Aug 2016
Location: California
Posts: 54
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Question, how are the superchargers lubricated?
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08-28-2017, 05:08 AM
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#13 |
Drives: 2011 Camaro 2LT/RS Join Date: May 2015
Location: Farmville, Virginia
Posts: 1,024
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the ones I'm familiar with are usually a sealed unit with their own lubricant within
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09-04-2017, 04:46 PM
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#14 |
Drives: 2013 ZL1 M6, '99 Tahoe 2Dr Sport Join Date: Mar 2013
Location: South of Houston, TX
Posts: 890
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The engine/powertrain is covered under a 5year 100K mile warranty. You should be covered for warranty work provided you are stock or very near it.
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