This could be a dumb question but I have the quick connect flushFittings on my engines when flushing with fresh water Do I run the engines or not? Sorry seams stupid but when I do not Run engines I do not have any flow from the exhash from the port and starboard sides.. Also shouldn't the boat be a running temp so thermostats are open so water flushes entire system.Thank you for your replys.
Engine flush on 05 320 dancer with mpis
- Thread starter tedd930
- Start date
spfortjohn
New Member
We have the same on our formula. ( inlet goes directly to the water pump on the lower left side of motor). You need to turn on water start motor bring to operating temp shut off moter then the water only problem if your boat is in the water you might need to shut off seawater inlet
ZZ13
Well-Known Member
Many of the quick connect valves, such as the Perko Flush Pro, have check valve in it which is forced back into the opposite end by the hose water pressure to close off the seawater inlet automatically. You'd have to test/check yours to find out. What brand is it?
Rohan
Member
- Jan 23, 2012
- 85
- Boat Info
- 2008 Sea Ray 275 Sundancer, NorthStar 657 Chartplotter, 2.4m fibreglass tender 3.3 Mercury O/B
- Engines
- 350 Mag SeaCore Bravo III drive
I don't want to hijack this thread but I am interested to learn about this too. My boat lives in saltwater on a marina but is fresh water cooled. There is a separate sea cock in front of stb side of engine which I could shut off, but as the boat is in saltwater, I understand the pick ups in the outdrive leg will continue to suck in sea water once I turn the engine on. Is there still a benefit in using this in such a situation?
ardeprint
Member
- Nov 1, 2010
- 688
- Boat Info
- 2003 Formular 40PC and a 185 SRX 2002
- Engines
- T Yanmar 440's with V-Drives / 4.3 Mercruiser with Alpha I
I use these every time I go out. I leave my seacocks open due to the advice of members of this forum. The water preassure from the hose is enough to run through the system and out the exhaust. In the event the engine turns off the water from the hose will exit through the seacock rather than into the engine.
If your boat is not pumping out through the exhaust, the hose water may be going out through the seacock. This should not happen when the negines are running since the water pump will suck water from the inlet side. You can close your seacocks, BUT MAKE SURE NOT TO RUN THE WATER FROM THE HOSE WITH THE ENGINES OFF.
1- have water running right before you start so you wont fry the impellers.
2- Shut water off right after you turn the engines off. You have about 20 seconds before pressure builds and water could ride back up into the engine.
I would just run the engines and keep the seacock open to avoid any problems.
If your boat is not pumping out through the exhaust, the hose water may be going out through the seacock. This should not happen when the negines are running since the water pump will suck water from the inlet side. You can close your seacocks, BUT MAKE SURE NOT TO RUN THE WATER FROM THE HOSE WITH THE ENGINES OFF.
1- have water running right before you start so you wont fry the impellers.
2- Shut water off right after you turn the engines off. You have about 20 seconds before pressure builds and water could ride back up into the engine.
I would just run the engines and keep the seacock open to avoid any problems.
Thank you this makes the most sense and I agree to keep it simple
And not close the valve it makes sense the factory flush connects directly
to water pump forcing fresh water threw the system
Thanks everyone for the response.
Ted
And not close the valve it makes sense the factory flush connects directly
to water pump forcing fresh water threw the system
Thanks everyone for the response.
Ted
ardeprint
Member
- Nov 1, 2010
- 688
- Boat Info
- 2003 Formular 40PC and a 185 SRX 2002
- Engines
- T Yanmar 440's with V-Drives / 4.3 Mercruiser with Alpha I
Hey Ted,
Sorry I was not very clear on my first post. Here is how I do it:
1- I come in and sometimes I dont even turn the engines off so they are at operating temp.
2- I have rigged, using an old hose, the quick disconnect from mercruiser on one end, the No Salt reservoiur in the middle, and a simple quick disconnect from the hardware store on the other. this allows me quick connection between water pistol and this rig.
3- I don't always use No Salt
4- While engine is running I connect into the Merc inlets, The other side is already connected to running water.
5- I run them using my connection for about a minute and shut down engines.
6- Disconect hose and repeat on the other engine.
Sorry I was not very clear on my first post. Here is how I do it:
1- I come in and sometimes I dont even turn the engines off so they are at operating temp.
2- I have rigged, using an old hose, the quick disconnect from mercruiser on one end, the No Salt reservoiur in the middle, and a simple quick disconnect from the hardware store on the other. this allows me quick connection between water pistol and this rig.
3- I don't always use No Salt
4- While engine is running I connect into the Merc inlets, The other side is already connected to running water.
5- I run them using my connection for about a minute and shut down engines.
6- Disconect hose and repeat on the other engine.
Alex F
Well-Known Member
- Nov 14, 2006
- 9,166
- Boat Info
- 2005 420DB with AB 11 DLX Tender, Raymarine Electronics (2x12" MFDs) with Vesper AIS
- Engines
- Cummins 450Cs, 9KW Onan Generator, 40HP Yamaha for tender.
Check this thread, it should answer most of your questions: http://clubsearay.com/showthread.ph...anifold-05-340Da/page8?highlight=engine+flush
I assume that your engines are the same as what my 320 had (raw water cooled with flushing system). Yes, you need to run the engines to flush them, otherwise most likely you'll flood them (if you close the seacock). Let me know if you have more question after reading through the thread/link I posted.