Newbie here with a 94 accord ex that is puking antifreeze out of the radiator cap. Not alot but enough to worry me..i have installed a new cap, thermostate and the problem went away for a few days but now its back. Car has 300k on it. I have not put a timing belt or wp on it since 115k so I think my issue lies there. Any thoughts are greatly appreciated....

 

also the car does not run hot..forgot that earlier..

 

Even with a new cap, if there's scratch marks or similar damage to the neck of the radiator can let it leak. There's 2 separate levels where the rubber seal of the cap seals against a smooth ridge in the radiator neck. Check & clean these surfaces carefully.

The timing belt is way overdue if you have 185k on that belt, but that won't cause this. If the belt breaks the engine will just quit running.

The other possibility is a blown headgasket.

 

Bubbling coolant on a cold engine is usually an indication of a blown head gasket. Air gets forced into the cooling passages and bubbles up in the overflow tank. Does your coolant smell like exhaust?

 

no exhaust smell. i think i found the problem. a hairline crack left of the fill neck. i am thinking about trying to patch it...any ideas...

 

Crack in the plastic tank? I wouldn't trust a patch except to give you enough time to mail-order a radiator.