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Thread: How to get rid of carbon deposit on pistons, combustion chambers and valves

  1. #1

    Array
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    Join Date
    06-11-2014
    Posts
    42
    Location

    Atlanta,GA
    Vehicle

    1993 Mitsubishi Mighty Max
    Engine

    4G64

    How to get rid of carbon deposit on pistons, combustion chambers and valves

    Just did a major surgery on my 4G64 engine on my Mighty Max..... Replaced HLAs... 2 Timing belts, tensioner..camshaft seal. Valve stem seals(what a pain)..water pump..radiator.valve cover gasket..spark plugs....etc..

    It had been burning and leaking oil for 3 years... but it was running strong...i just checked and added oil frequently to keep it running..

    After i replaced all the parts listed above... the engine runs perfect..no burning oil at all....no matter at start up or high rpm....

    Now i am thinking of getting rid of the carbon deposit that accumulated over the years.... any experience on that?
    I know seafoam.. i poured a little bit into throttle body.... Just wondering if there is any better or proven way to get rid of the thick layer of carbon inside engine...


    Thanks in advance..

  2. #2


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    01-16-2014
    Posts
    470
    Location

    Las Vegas, NV
    Vehicle

    1991 Mitsubishi Mighty Max
    Engine

    4G64
    Buy a can of BG44k, throw it in the tank, drive, be done with it.

  3. #3

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    08-11-2012
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    1,199
    Location

    Richmond, CA
    Vehicle

    1989 Mitsubishi Mighty Max
    Engine

    G63B
    People always drive these trucks like grandmas so the EGR is pretty much always open and pumping soot into the cylinders. Either block off the EGR if it's legal for emissions in your area or at the very least clean out the passageways. I'd bet they're clogged with years of crap.
    I can help get your truck to pass California smog! PM me.
    California BAR Smog Inspector License #EO635469
    "Keep 'em on the road."

    See what I have for sale:
    http://stores.ebay.com/zims

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