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Stopped a water Leak in my Merc 30L 4 Cyl Engine

nlmatos

New member
"I have had someone winterize

"I have had someone winterize my boat over the years. I didnt this winter. It got expensive. Today, I was opening the boat and got it started. No problem...I let it run for a bit. As I looked towards the sterndrive area, I noticed water draining out of the bilge plug hole. I immediately jumped into the boat and pulled the engine cover back. I saw a trickle of water coming from underneath the exhasut manifold. I got my flashlight and there seems to be a rusty crack on the top area of the engine below where the exhaust manifold is connected. Is my engine block cracked? The engine ran flawlessly. Maybe, I should bring it in for a second opinion. How much is a new engine?"
 
I'll call my marine mechan

I'll call my marine mechanic. Can a Mercrusier 3.0L engine with 135horse power replace my Merc 3.0L engine with 119horse power? Can it be easily swapped? The Alpha I stern drive is in excellent shape.
 
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