hi! first of all sorry for my english its bad =)

im new into bigbike. i had my zx14 2008 spesial edition for 6months now. the things that worry me is that the leak of coolant. when i drive to hard. the bike spit out alot of coolant coming out under the bike. is this normal when the bike got to hot and they taking out hot water coolant ? not normal leak , maybe 0.5liter or 1.liter almost. any answer would be good thanks.

You need to have the system pressurized. This will push the sealing places open to a leak. Wherever it leaks, there is your hose problem. If the water pushed out of a hose and you follow that hose to the radiator overflow tank = Normal heating burp.

Big difference between out a drain hose and between a fitting and a radiator hose.

Yeah it's possible whom ever owned before you overfilled it and it's adjusting with overflow hose which dumps out underneath (by your left foot usually. Next time pull over right away and see if one of those tubes are wet. I never had this with coolant, but sometimes when the bike sits in the sun I would get a puddle from the gas vent lines which are in the same bundle.

thanks all. yes ure right there. its coming out underneath by my left foot.