1996 Honda CIvic coolant in motor? Serious problems?

My 1996 Honda Civic Ex (170,000 miles) has is leaking an excessive amount of coolant in to the motor. I got my head gasket changed about 6 or so months ago because of the same issues, except before oil and combustion gas going in to the coolant system. After the headgasket swap a small amount of coolant leaked under the car but never in to the motor till recently, and it only leaking more and more. I noticed the coolant mostly leaks when the car is turned off or sits off for a while. It dose not leak one bit when driving on the high way for excessive miles. Could this be the headgasket again? Cracked or warped head? What else could it be? It has also been having issues starting. It will crank all day but wont start. It starts when cool but not warmed up or sits in the heat. I replaced the spark plugs, cables, and even fuel filter. Nothing has changed.

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