sludge in coolant reservoir

[ilovheros]

Used Honda Motorcycle coolant for sure. i know about the water pump problems. Read the post about the clay, it will make sense, but Martin is the man.

[ilovheros]

Take the cap off your radiator and look down inside that thing. Does it look like the overflow tank inside?

[vrus]

Originally Posted by ilovheros

Take the cap off your radiator and look down inside that thing. Does it look like the overflow tank inside?

nope, it's completely green when I looked down and when I drained it out. The issue only stems in the reservoir and the hose that links to the rad.

A few months ago, I did a flush, put new coolant in the reservoir and it did the same thing, although I admit some of the deposit was stubborn and didn't come out just flushing with water. This is the same coolant I've used successfully in my other street bikes.

I got the bike this Feb, so I wasn't aware of any of this until I saw all my coolant burp out one day on a long ride. She is winterized now, but she ran well in city and in the mountains even with this issue .

[ilovheros]

When I looked inside my son's van radiator there was brown/orange crud caked all inside. My vote for your situation is the motor molding clay, which apparently is no problem but I am no expert. Let see if others (Martin) weigh in.