hi am new to this site and i have alot off questions ,,,,i recently boat a fletcher speed boat its only about 15ft and it has a mecury 75 engine on it.its really clean i looks new enough...but i dont know how many cylinders it has .i had her out the oller day for the second time and when she was sitting idle for 5 mins in the water she died out and it would not start until i put the wee choke lever on. i have too give her a few hard revs then she will drive ok then she would doe it again if i let her idle ??? can any 1 give me any help wat too look for