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Run engine on flush port
https://www.smwebhead.com/phpBB3/viewtopic.php?f=11&t=9639		 Page 1 of 1
Author:  naumovski [ Sat Jun 23, 2012 4:57 pm ]
Post subject:  Run engine on flush port
Ok i never used the flush port on my engine and i looked at it but i have no idea how to do it..
When i winterize my engine last year for the first time i used muffs but i am not feeling comfortable to use them again because the water is going in just from one side and a lot of water was coming out from the muffs..So now i have no idea how to attach garden hose to flush port and how to use it..And is it more safe then muffs or some advice?
If someone have pics or what parts should i have to connect the hose And to explain One thing no im not stupid i am just from europe and measurements here are different from every screw to .... :( :cry:
Author:  Graham R [ Sun Jun 24, 2012 3:08 am ]
Post subject:  Re: Run engine on flush port
That hose just leads to the inlet hose for the raw water pump; it's a very sure way of getting fresh water in (plus any excess over and above what the engine is taking flushes the power steering fluid cooler and outdrive).

I never had 100% success attaching a hose to the connector, European connectors seemed just sufficiently different so it always leaked. I chopped it off and fitted a ball valve and male quick release coupling ( "Gardena" style). When not in use I cap the coupling with a female quick release coupling blanked off with the original green ( or is it blue?) plastic part which stops it getting lost. It works fine now. The ball valve is perhaps an overkill, but I had it in my toolbox doing nothing.
Author:  taz42169 [ Sun Jun 24, 2012 6:00 am ]
Post subject:  Re: Run engine on flush port
You're not supposed to run the engine hooked up to the flush port, at least on mine according to the manual. I would read the manual or get yourself a Sealoc Guide. I'm not saying I haven't, but not supposed to...
Author:  Graham R [ Sun Jun 24, 2012 6:28 am ]
Post subject:  Re: Run engine on flush port
There was an earlier version of the flush system for a short time, but certainly by the time my boat was built ( late 2003) the later version was being used. That later one is designed for use when the engine is running ( but if I remember correctly, the instructions advise to limit RPM, presumably due to the chance of insufficient flow; low pressure supply or the garden hose being sucked closed). As I wrote, it's a direct connection to the water pump inlet hose.
Author:  M.A.C Cruiser [ Thu Jun 28, 2012 7:06 am ]
Post subject:  Re: Run engine on flush port
do not run your engine while connected to the flush port!!

The flush port is basically a "reverse flush" if you run the engine with it hooked up, your inlets will be sucking air and trying to push it out the flush port. with a hose hooked there trying to push water the opposite direction.... well you can imagine the type of damage that can be done.

Also, there are two worlds of thought on the flush port. Some believe it doesn't get the job done because the engine doesn't get warm, so the thermostat wont completely open and allow for a full flush. I personally disagree with this and use the flush port on my outboard, but run it a bit longer. Just because the engine isn't warm and the thermostat isn't wide open, doesn't mean water isn't getting through.

what engine are you working with and i'll see if i can get you some pics.
Author:  Graham R [ Thu Jun 28, 2012 1:19 pm ]
Post subject:  Re: Run engine on flush port
M.A.C Cruiser wrote:
do not run your engine while connected to the flush port!!

The flush port is basically a "reverse flush" if you run the engine with it hooked up, your inlets will be sucking air and trying to push it out the flush port. with a hose hooked there trying to push water the opposite direction.... well you can imagine the type of damage that can be done.

.


No, in the case of the later one, it isn't ! The flush inlet is in the inlet hose of the raw water pump. The water from the garden hose goes exactly the same way into the raw water pump/ engine as it would if raw water was getting sucked in through the inlets on the outdrive lower unit. The only water which goes the reverse way back to the outdrive is excess water that the raw water pump will not let through.
Author:  Paul I. [ Thu Jun 28, 2012 9:36 pm ]
Post subject:  Re: Run engine on flush port
Graham R wrote:
M.A.C Cruiser wrote:
do not run your engine while connected to the flush port!!

The flush port is basically a "reverse flush" if you run the engine with it hooked up, your inlets will be sucking air and trying to push it out the flush port. with a hose hooked there trying to push water the opposite direction.... well you can imagine the type of damage that can be done.

.


No, in the case of the later one, it isn't ! The flush inlet is in the inlet hose of the raw water pump. The water from the garden hose goes exactly the same way into the raw water pump/ engine as it would if raw water was getting sucked in through the inlets on the outdrive lower unit. The only water which goes the reverse way back to the outdrive is excess water that the raw water pump will not let through.


Yep!
Author:  M.A.C Cruiser [ Sat Jun 30, 2012 7:16 am ]
Post subject:  Re: Run engine on flush port
Damn I/Os making me look silly. Should have read his signature before posting.

:roll:
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