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    2003 5.0 MPI stubborn overheat issue

    Thank you Scott, excuse my ignorance on the backflushing. I've tried to dig around for info but it seems all over the place. What is the primary hose to pull for backflushing? I don't believe my engine has an oil cooler. I'm seeing recommendations to disconnect and shove the garden hose down...
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    2003 5.0 MPI stubborn overheat issue

    Good Morning! I recently bought a 2003 Mercruiser 5.0L MPI with a Bravo 3 (prior use was all dry stack, last used 2 years ago), at the time it wasn't flowing any water through the exhaust and overheating within a few minutes on the hose so I took a gamble... I took it home, pulled the sea water...
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