Tech Tip with the single point drain system

Bt Doctur

Well-Known Member
Aug 21, 2010
3,970
New Jersey
Boat Info
Ex SRV 240 Weekender twin
Engines
in between
Tech Tip with the single point drain system, be sure to remove the quick connect fittings on both sides of the block.
They do close with scale and corrosion . The same thing happens with the so-called flushing system. The block connection become closed from corrosion and will not allow it to drain properly or allow fresh water into the block to flush it.
Also ,there is no way to drain a block or manifold with this type of system.So if your thinking of just introducing it with a running engine
THINK AGAIN
My current rate to dress and replace an engine is $1600 plus the cost of the engine.You decide
 
Does this apply for a specific motor? I have 8.1's and your statement "there is no way to drain a block or manifold with this system" just caught my attention.
 
This is a good point - I'll add that I have personally seen (a few times, none-the-less) the small hoses that go from the QD fittings on the block to the water manifold COMPLETELY packed with sand. If one would simply do the "turn the blue handle" thing, you may never know that the block never fully drained.

Sashton - on some engines, there is a quick drain setup that routes where the blue plugs normally would be (now has a QD fitting) directly to a water manifold/drain - so that everything can be drained all at once.
 
Tech Tip with the single point drain system, be sure to remove the quick connect fittings on both sides of the block.
They do close with scale and corrosion . The same thing happens with the so-called flushing system. The block connection become closed from corrosion and will not allow it to drain properly or allow fresh water into the block to flush it.
Also ,there is no way to drain a block or manifold with this type of system.So if your thinking of just introducing it with a running engine
THINK AGAIN
My current rate to dress and replace an engine is $1600 plus the cost of the engine.You decide

Bt Doctur, Dennis, can you shed light on how those "quick connects" actually come apart?
Thanks
 
you push inward on the plastic and it releases from the block fitting. wd40 helps a lot
 
Yeah, it's just a push button thingy. Pretty straight forward - hard to see from your angle, but if you get a mirror in there or just feel, it'll make sense once you do it.
 
Yeah, it's just a push button thingy. Pretty straight forward - hard to see from your angle, but if you get a mirror in there or just feel, it'll make sense once you do it.

Does anyone have a picture of this fitting? I looked for it last night and couldn't find it.
 
I don't have one, offhand, but I can tell you that it's made by Colder Products, if you wanted to try and google. If you follow those small, rubber hoses that are attached to the horizontal water manifold (below your serpentine belt), the hoses will take you right to the fittings.
 
DSCN3511_zpspkpgrehy.jpg

DSCN3512_zpsqlht4zds.jpg

DSCN3513_zpsqr7m61fd.jpg
 
Thanks guys, Ill check it out tonight. I have the mulit point drain system. Do you know if the same fittings are on both single and multi point drains?
 
I believe they are the same but the 3 motors I have done with that flush/drain system had both engine block fittings plugged up solid.
The safest way is with brass plugs or the blue wing`d ones that you remove and probe the opening to be sure there open and draining.
 
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22-862225 is the part number. have seen them on ebay ranging from 4.00 -8.00
 
I did have the 4 quick connects and they were pretty clear. 1 was a little slow so I probed and it gushed. All antifreeze. I'm protected!! Great tip tho, thanks.
 
Thanks guys for the info and the pictures. I swear mine look different however, maybe not?. I am going to have to get a picture
 
Brian, I have an 04 and there are 4 of them. The port engine side near the water tank is real fun to remove.
 

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