flushing

Hey folks, I have a lovely Sun Deck 24, it used to be a lake boat but I have it now in sat water. It is 2006 with Mercruiser 5.0 stern drive. The question is - do I need to flush the engine as I see others do with outboards? And if I do how do i do that? I don’t see an obvious place to attach a...

Quick question about muff-flushing Bravo 3 stern drives. My Bravo 3 drives have an intake at the front of the gear case as well as the sides. When I put the muffs on the sides, the water pours out of the front gear case and doesn't make it through the rest of the engine. The Mercruiser videos...

Hi, For the first time, I'm attempting to flush my raw water system on my QSB 5.9's. My question is, can I pipe a hose to the downstream port (1/4"NPT fitting just past the impeller) and run fresh water through the system without running the engine? I started doing this, but got paranoid...

What should I do to get a good flush on the different engine parts? I removed engine partitions to do maintenanace and check things that I normally can't get to and figured this would be a good time to remove hoses and start flushing engine parts.

When I flush my engine with the muffs, I notice a slight rusty color in the water after 5 to 10 minutes. I assume the rust comes out after the thermostat opens up and starts circulating water from the block:huh:. You can't tell by looking at the exhaust water but from the stain left on the...

:huh:Hey Gents, I am new to this site and happy to be here. I am in need of some knowledge though. I have a 1984 SeaRay 207 with a Mercruiser 260 and an Alpha outdrive. My question is I don't fully understand the cooling system. From what the book explains (very briefly) the lower unit on the...