What is this stuff in my closed loop cooling system??

[Devildog69]

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/community/images/smilies/14.gif

[Destroyer]

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.

[spareparts]

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

[Devildog69]

Thanks to both replies. I'll get on it right away.

[willy]

The Guru with the voodoo just showed up:clap:

[Destroyer]

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. :party: So if he says that's what to do, by all means do it first.