my sons 7mm cub leaks coolant out through the radiator overflow. i've never thought that this could be such a big issue, as most of time time you replace the orings and its fixed, sometimes the radiator cap.
so far i've tried.
- new orings 2 times
-3rd time i pulled out the head and the orings were good but it was still leaking through the overflow
-new radiator cap
I then said heck with it, i got a brand new noss head, new orings.. well i took it out last week and it still leaks through the overflow, especially when i give it some throttle it literally shoots out when im cleaning it out when im staging and all the way through the run. The water stops leaking after i lose about a water bottle and a half of water, but when i add it back in it starts to leak through the overflow again.. there was no water shooting out of the pipe at all. Even when i lose a bottle and half of water the bike doesn't overheat at all, i could still run the bike.. the water temp stays at 120.
Another thing. When i first bought the bike the top radiator hose was plugged into the waterpump cover and the bottom radiator hose was plugged into the head. I changed it because i usually run my hoses vise versa. Could this be an issue?
My timing is +8, compression 170ish bike runs on alcohol. I'm out of ideas.