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noise/smoke/lost power

This is a discussion on noise/smoke/lost power within the Internal Engine forums, part of the LSx Technical Help Section category; Alright guys I got one for ya. Changed the oil in my bird, took it out for a cruise. Next ...

  1. #1
    Junior Member
    Join Date
    Apr 2011
    Location
    texas
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    black on red
    2001 firebird formula

    noise/smoke/lost power

    Alright guys I got one for ya.

    Changed the oil in my bird, took it out for a cruise. Next day I'm on a country road behind a slow car and give it gas enough to hit the passing gear hard but I don't go WOT. Now my car backfires twice and I get a huge cloud of white smoke and I lose power big time!!

    Symptoms:
    Milky residue on my oil cap
    White puffs out the oil breather at idle
    Lost power
    Tick/tapping sound from engine
    Throttle body had grime residue
    and the exhaust smells potent like its concentrated

    I've had mechanics say bad head gasket another say cracked head and another say flat cam or bent pushrod bad valve.

    If anyone has been through this please share your findings to the problem.

    And no the oil wasn't milky when I drained it

  2. #2
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
    Join Date
    Feb 2009
    Location
    Pittsburgh
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    9,965

    White
    2008 Hummer H3

    Sounds like the head gasket crapped out.

    Had this happen on a couple different engines.

    White fog like smoke from the exhaust can be a good indicator.

    The engine noise, loss of power, and milky like substance under the oil cap is also.

    I would stop running it as you can damage the engine if it is'nt already.

    Whether it's a cracked head, bad head gasket, (not likely to be caused by a bent push rod or valve alone though),

    you'll need to tear into the engine reguardless to service either issue.
    Last edited by Smittro; 01-29-2012 at 04:36 AM.

  3. #3
    Junior Member
    Join Date
    Apr 2011
    Location
    texas
    Posts
    21

    black on red
    2001 firebird formula

    For now its parked :'( but I haven't been able to determine if the fog like smoke it making it out of the tail pipes due to the humidity and weather temps around here.

  4. #4
    Junior Member
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    May 2009
    Location
    Santa Maria, California
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    68

    Black
    1998 Pontiac Formula LS6

    If you have a white cloud coming from your exhaust on start-up you can count on finding coolant evidence in the cylinders. How bad it is has be determined by a tear-down. BTDT.

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