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  1. L

    2011 Mercruiser 4.3L TKS high temp @ low rpm

    Update: I removed hoses for incoming raw water, and no major issues found. I did run a tiny snake and back flushed hose through transom( some sand debris found). Ran boat for almost an hour with no problems. I am almost thinking the muffs did not have that great of a seal, plus I did not...
  2. L

    2011 Mercruiser 4.3L TKS high temp @ low rpm

    I will take all of these comments into consideration and update when I get back to the boat— may be a week. Thank you all!
  3. L

    2011 Mercruiser 4.3L TKS high temp @ low rpm

    Troubleshooting for temperature alarm at low rpm( like idle or pulling away in no wake zone). Replaced thermostat,impeller,sender and receiver sensors at thermostat, and just yesterday the exhaust manifolds and risers. The manifolds were internally rusty. After manifold/ risers installed I had...
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