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    Poor engine performance, out of ideas, Help!

    Back around July I had the intake manifold crack on my Merc 4.3L when we were loading up at the dock. It was the first time I had the boat out since winterizing it in 2011 and we were still in the wake area when I noticed the bilge was filled with milkshake. I've done nearly everything I...
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    Did I do my timing right? I'm so confused.

    *2005 4.3L Carb, 0w324734* So I visited a boat shop yesterday, and the guy said I should be using this for base timing mode: I don't know where the heck that dongle would plug into, and I didn't find it when I looked yesterday afternoon. But when I did the base timing procedure it said to...
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    What are these 2 things?

    Both pictures below are looking at the left side of the engine. What are these and what do they do? In this pic the starter is on the right, and the black threaded pipe looking thing is stuck to the hull. It's filled with water right now, is that ok? It collected while I was cleaning the...
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    Merc 4.3 bogs after 1500 rpm

    Ugh. I need some smart people help. I spent the last 2 - 3 weekends trying to fix this engine and I think I'm getting close, but was incredibly disappointed today when I was able to get it in the water for the first time. Here's what I know: 2005 Merc 4.3 Carb'd, 0w324734 Cracked underside...
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    What does this wire do?

    Help! Marine gods! After replacing my intake manifold due to a crack, I've gotten everything back together but have 1 wire that I can't figure out. It appears to be a ground wire that should be screwed down, but I don't know this for sure or where. 2005 SeaRay 185 Sport, Mercruiser 4.3L...
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