1984 Omc 3.0l

vaboatdoc

Cadet
Joined
Dec 29, 2007
Messages
21
Im working on a 84 OMC 3.0 I4 its giving me a hard time. Engine runs and starts good but when trying to plane boat out it takes forever to plane and seems like even when you get it on plane it has no power. Carb has been rebuilt and fuel pump too new plugs also. Also anyone know the RPM range for this motor should be??
 

chiefalen

Captain
Joined
May 18, 2008
Messages
3,598
Re: 1984 Omc 3.0l

RPM range 4200-4600. May I ask what this power plant is sitting in?

1- What size boat?

2- Does it sit in the water?

3- Is the bottom clean?

4- What size prop?

5- Is it water logged?
 
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