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ruff idle and smoke

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Old Dec 28, 2012 | 09:16 PM
  #1  
jetmech09's Avatar
jetmech09
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Burning Brakes
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Joined: Nov 2005
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From: Pembroke Pines Fl.
Default ruff idle and smoke

I recently noticed my 2001 A&A supercharged stock 80K mile LS-1 idle is ruff and when the throttle is applied I see smoke in the mirrors , mostly from the left exhuast. good oil psi. and temp maintains aroun 185 deg.
Car still has plenty of power and it seams to smooth out starting at 1,200 rpm . It will also idle at about 1,500 for about 4to5 seconds then come down to 600 rpm. this all happened after a spirited run at 10 P.S.I. of boost. No smoke at idle. I also noticed that sometimes I have oil on the garage floor next to the l/h front tire . cant seem to find where its comming from . it will go days without leaking then all the sudden oil on the floor. any suggestions?
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Old Dec 28, 2012 | 10:38 PM
  #2  
NukeC5's Avatar
NukeC5
Melting Slicks
 
Joined: Jun 2012
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From: Oceanside California
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Chipped valve, partially blown head gasket, failed valve spring... there's a number of possible issues. If the leak is new and related to the issue, probably head gasket. Under pressure it may be enough to blow by the gasket.
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