Reply To: GV125 S — Engine issue? Oct 15, 2023 at 7:09 AM #11382 Simon👤 Member Topics: 1Replies: 353 Sorry to forget to add when I chase coolant leaks (I rebuild a fair number of the good old water cooled 2 strokes for people) I use a UV dye added to the coolant & a UV light which then shows up cracks, leaks etc.
