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How to clean intake and exhaust ports and valves?

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    How to clean intake and exhaust ports and valves?

    We have an '82 GS750 motor that is on an engine stand and we are in the process of checking and cleaning things up. The exhaust valves have a lot of carbon built up on them, and the intake and exhaust ports are both generally filthy. Whats the best way to clean them up without completely disassembling the head? Obviously since the engine isn't running, a fuel additive isn't an option. Thoughts?

    #2
    Brake fluid seems to work for me in loosening off the carbon deposits. Might need soaking in the stuff overnight.
    Richard
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    GS1150 EF bought Jun 2015
    GS1150 ES bought Mar 2014: ES Makeover Thread AND blog: Go to the Blog
    GS1100 G (2) bought Aug 2013: Road Runner Project Thread AND blog: Go to the Blog
    GS1100 G (1) Dad bought new 1985 (in rebuild) see: Dad's GS1100 G Rebuild AND blog: Go to the Blog
    Previously owned: Suzuki GS750 EF (Canada), Suzuki GS750 (UK)(Avatar circa 1977), Yamaha XT500, Suzuki T500, Honda XL125, Garelli 50
    Join the United Kingdom (UK) Suzuki GS Facebook Group here

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