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#1
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What is this stuff in my closed loop cooling system??
Any help would be good. This is not hard stuff. Kind of the consistency of soft mud but it is all inside. What should I do and why is this here???
HELP. Steve http://www.wellcraftv20.com/communit...smilies/14.gif 
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#2
04-29-2014, 03:06 PM
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It's a combination of several different chemicals and minerals. Almost looks like some salt is in there also. Without a lab test, it's impossible to say exactly what it is, but it looks just like the corrosion you would find in a car radiator when the anti-freeze in it wasn't treated with anti-corrosion chemicals and lubricant.
The ONLY cure I can think of would be to flush out your system. Add a radiator flush into the water, run the engine for a while, drain, then do it over and over again until you dissolve as much of it as you can, then put in fresh water, anti-freeze and anti-corrosion chemicals to prevent it from happening again.
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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#3
04-29-2014, 08:07 PM
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thats what shows up when your riser gasket is leaking anti freeze into your exhaust system. Clean the surface of both the riser and manifold, use a Mercruiser gasket(should be silver in color) and put it back together. If you want to go further, check the compression, pay attention to number 4
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#4
05-01-2014, 04:54 AM
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Thank you
Thanks to both replies. I'll get on it right away.
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#5
05-01-2014, 06:53 AM
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The Guru with the voodoo just showed up
__________________
Willy 1986 V20 Old School 1992 V20 1992 150 Yamaha 1997 HydraSport 2250 Vector 2009 17' G3 Outfitter "G Spot" http://www.youtube.com/watch?v=TDebw...eature=related "I won't be wronged, I won't be insulted and I won't be laid on a hand on. I don't do these things to others and I require the same from them" JW
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#6
05-01-2014, 07:14 AM
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Devil, pay attention to what Spareparts says first. He's the expert in these things. I'm just a backyard wrench turner. He does it for a living.
 So if he says that's what to do, by all means do it first.
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God) Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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