Wont run long and sometimes wont even start.

Hello I have a problem with my car an my mechanic is stumped! It started with my car Stalin out an would start an runs real rough an dies sometimes starts right up an sometimes it wont! It also is building pressure an is popping my vacuum line that connects at the motor off as well as blowing elbow coolant hoses! I have replaced map sensor crank sensor coils ignition module my car has spark an my fuel pump is working! Oh an my battery. Light turns on before it dies out has brand new battery an refurbished alternator too! Please help I love my car!