Hi, Please could you help.....
I brought a 4m Ocean rib with a 1990 or im not quite sure maybe 1998 mariner 40hp engine and i had seen all the threads on hear so i brought and fitted doel hydrofoil fins to the outboard.
I have used the boat and i get on the plane quick and theres a stable ride and everything....etc. The only thing is that fuel usage is appaling i use so much fuel!!!!!!
Can i take the hydrofoils off my engine and see if the hydrofoils are making it bad fuel usage or will the holes in the cavitation plate be bad?????
Is there anything i can do to change or improve fuel usage??
Thanks for your help...