What would cause a mud-like substance to form in the cooling system?
I found it in a small 5/16" hose that is I think just a bypass for a thermostatic valve that is just before the heater-core. The valve prevents an overheated engine from passing over-temped coolant into the core, which may cause it to blow, spraying boiling water on your legs
Anyway, this bypass hose had at least 3" in length completely filled with this gunk that has the color and consisitency of mud. Nearer to the valve it became harder. I had to clean the port on the valve out too. But most of it was like mud.
Never noticed anything anywhere else in the cooling system.
Secondly, why there? Just collects in the most restrictive area?
[ June 24, 2003, 03:55 PM: Message edited by: Jason Troxell ]
I found it in a small 5/16" hose that is I think just a bypass for a thermostatic valve that is just before the heater-core. The valve prevents an overheated engine from passing over-temped coolant into the core, which may cause it to blow, spraying boiling water on your legs
Anyway, this bypass hose had at least 3" in length completely filled with this gunk that has the color and consisitency of mud. Nearer to the valve it became harder. I had to clean the port on the valve out too. But most of it was like mud.
Never noticed anything anywhere else in the cooling system.
Secondly, why there? Just collects in the most restrictive area?
[ June 24, 2003, 03:55 PM: Message edited by: Jason Troxell ]