175 Efi ser# T068667. Over the last two seasons I have had some trouble with this motor. While running down the lake around 45-50 mph the motor will just stop running. I will go back and pump the bulb ( not completely flat) and it will start right up and not happen the rest of the day. It is happening more often now . Has been looked at a couple of times by local mechanics. One rebuilt the diaphragm on the fuel pump and said next would we would need to look at the the high pressure fuel pump. Most recent mechanic cleaned the screen to the high pressure pump and said that should work. Not sure where to go from hear, I don’t mind spending the money to get this working but so far I’ve spent over $1500 for this problem with some maintenance included but nor getting good results. The motor does seem to stutter or run rough at times while driving down the lake, but not consistently. Any help would be appreciated!
plugs for this motor should be NGK. BPZ8HS-10 correct?