FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
I have a 84 johnson 40 hp On a 1967 13,3 boston whaler. When I take it out it runs good but just seems like i should be a little faster. it Maxes out at 3400
rpms. I beleave it should be 4500 to 5000. why is it not reaching max proformance. 150 lb of compession, two brand new ignition coils and...
