
09/19/2025
2015 KLR650. Oil milkshake. Replace engine or run some tests first?
My KLR650 has been sitting for nearly 3 years. Three years ago it’s sort of ran, but was showing some signs of not perfect perfectly running. But it sat in the jungle and definitely got some heavy rains. I assume it’s just a carburetor issue. I recently took out the carb, cleaned it out, put it back in and got it to start, somewhat idle, and rev up pretty good.
I found that the clutch was stuck and so went through the recommended procedures of getting it unstuck by getting it into gear holding the clutch and getting up some speed and then slamming down on the rear break to try to free the clutch.
I did it four or five times slamming pretty hard and it will not unstick, so I began to drain the oil to see about digging farther into it….
That’s when I saw the milkshake. The coolant in the radiator still looks clear and green and was all the way to the very top. So my guess is water contamination, but I haven’t opened it up yet.
Just wanted to check in here with this community on some advice before I go down a rabbit hole should I just assume that the engine is shot or are there some things I can do?