Hi All,

My 1995 Accord Ex, just got a new (used) motor put into it and since then i have been having the problem of my overflow tank for coolant overflowing and also not going back into the system. When I take off the rad cap (just bought a new one from Honda today) i can see bubbles constantly coming up. I took it to my mechanic, thinking it might be a head gasket problem. But he doesn't think so, so then i had it dyno tested for hydrocarbons and it seemed fine. There is no white smoke out the tail pipe up until around 4500 rpms (did it just once to check), and this is just frustrating me like crazy as to what it is. I have bled the system multiple times and this is still happening. Maybe the rad cap will fix it?

Symptoms:
Overflow tank overflowing
Constantly needing to check coolant level
Bubbles in Coolant