Hello , i have the issuse with my UTOPIA 185 with MERCURY V6 2STROKE 240EFI , When i connect a water to engine flushing hose , the engine not cooling , the water staying in down engine , notcoming to powerheads ant exhnaust . I know when u siwtch on a water hes must leak from exhnaust and must come to powerheads ,but water not coming out.. I didit can a flush a engine because a engine getting a overheating in 1 minutes. Why the water not circuiting around a engine? Water coming out only from water pump.