"Hi all,
I am a recent purc
"Hi all,
I am a recent purchaser of a boat powered with an OMC 305 (Or so I am told)1979 model.
This motor ran actually pretty good (or so I thought) until I was talking to another boater friend, who said some things that actually made sense, so I am asking some questions to verify what he is telling me.
My Idle speed seems high (1000 RPM) Shouldn't it be closer to 650 RPM or so?
My WOT tops out at about 3000 RPM. I would expect from what I was told and what I have read that it should be about 4200 to 4600.
My top speed was about 18MPH (according to GPS). I thought it should be closer to 25 (knowing this type of boat and its weight)
I believe part of my top speed issue was due to trim tabs that weren't working (and since have been fixed), and my assumption (please correct me if I am wrong) is that the trip tab issue shouldn't effect the low WOT. (if it is low).
I really didn't hear the secondaries open up and am wondering if that is where the problem lies.
Since I haven't looked, I don't know if the secondaries are mechanical or vaccum operated but will check tonite.
It doesn't appear to be starving for gas and doesn't stall, so for now I can assume that the fuel system is operating properly (with the exception of the secondaries).
How do I check the secondaries if they are vaccum operated without the boat being in the water. I have an internal hose connection but was told to not run it above idle with this setup.
Any thoughts or Ideas will be appreciated."
I am a recent purc
"Hi all,
I am a recent purchaser of a boat powered with an OMC 305 (Or so I am told)1979 model.
This motor ran actually pretty good (or so I thought) until I was talking to another boater friend, who said some things that actually made sense, so I am asking some questions to verify what he is telling me.
My Idle speed seems high (1000 RPM) Shouldn't it be closer to 650 RPM or so?
My WOT tops out at about 3000 RPM. I would expect from what I was told and what I have read that it should be about 4200 to 4600.
My top speed was about 18MPH (according to GPS). I thought it should be closer to 25 (knowing this type of boat and its weight)
I believe part of my top speed issue was due to trim tabs that weren't working (and since have been fixed), and my assumption (please correct me if I am wrong) is that the trip tab issue shouldn't effect the low WOT. (if it is low).
I really didn't hear the secondaries open up and am wondering if that is where the problem lies.
Since I haven't looked, I don't know if the secondaries are mechanical or vaccum operated but will check tonite.
It doesn't appear to be starving for gas and doesn't stall, so for now I can assume that the fuel system is operating properly (with the exception of the secondaries).
How do I check the secondaries if they are vaccum operated without the boat being in the water. I have an internal hose connection but was told to not run it above idle with this setup.
Any thoughts or Ideas will be appreciated."