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    3.0 Idle Question

    In the manual it says the idle in gear should be around 700. And while tuning the carb around 550-600. My problem is the engine shakes and dies when I try to turn the idle down that low, should I be turning the fuel mixture screw in/out to compensate for turning the idle down?? My idle is...
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    3.0 Merc Flapper Gone

    While I was in the process of checking/replacing the exhaust manifold/riser, I noticed there was no sign of the flapper nor it's components. I've read through virtually every thread on here regarding flapper issues. The boat seemed fine prior to taking the exhaust apart to fix a small leak...
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    3.0 Mercruiser Riser to Manifold Leak

    I have a 1999 3.0 L Mercruiser, the leak looks very small, but I want everything to be working properly, it's between the riser and exhaust manifold. My biggest concern is, is this just in need of a new gasket? Was it purely a gasket failure, or the result of something else going wrong? Also...
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