Add one more WOT questions to the mix...

[acupajoe]

Mercruiser 120, 18 foot bowrider (Dixie), 15/17 prop. Only getting up to 3200 and 29 MPH. Carb was rebuilt last yr. New plugs. COmpression 120-125 all around. New fuel filter and water seperator. New belt, t stat, hose, impeller. Engine says rpms should be around 4-4200. HEard I should be able to go about 35-40? A good starting point would be?? Besides new engine. Throttle cable maybe?

Thanks

Joe

 

[chiefalen]

Re: Add one more WOT questions to the mix...

Are you water logged? When was your last full tune up?

 

[Uraijit]

Re: Add one more WOT questions to the mix...

Mercruiser 120, 18 foot bowrider (Dixie), 15/17 prop. Only getting up to 3200 and 29 MPH. Carb was rebuilt last yr. New plugs. COmpression 120-125 all around. New fuel filter and water seperator. New belt, t stat, hose, impeller. Engine says rpms should be around 4-4200. HEard I should be able to go about 35-40? A good starting point would be?? Besides new engine. Throttle cable maybe?

Thanks

Joe

Is this boat new to you? Have you ever gotten it up to a higher speed? What's your fuel pressure from the pump? Did you check the fuel pickup screen, etc? How's your timing?

Don S. has a good checklist for WOT problems.