I am having a frustrating time with my Mercruiser/Stern Drive?
After having treated my fuel system for "Diesel Bug" I have not been able to achieve top speed. The Engine sounds sweet and all seems good but only getting 22knts at best. I have had 29/30 knts previous.
Could this be down to the treatment or something else.
I feel it is Stern Drive problem but I am open to suggestion?
Cheers all, and enjoy the weather