I have a 2004 Rinker with twin 5.0L engines with ocean series duo props with SS props.
At the end of last season, after not using the boat for most of the season, I noticed that the engines ran fine at no wake speed as I drove out to open water. But, once I throttled up to WOT, I felt a slight vibration from the engines, I couldnt get above 3200 RPM and the boat would not get up on plane. There were no miss fires, back firing, or anything that indicated the engines were not getting enough fuel. Since it was the end of the season, I just waited for it to get pulled from the water for winterization to inspect the drives. Both drives and the bottom were covered with barnacles. So, i figured it was the drag from the barnacles causing the issue. barnacles were scraped and cleaned. I did notice a slight chip in one blade on one prop, but nothing major.
Now, here we are at the beginning of the new season and the same issue is happening. I checked the drives to make sure they were completely down. I have replaced the distributors and rotors ( the old ones did have corrosion on the contacts) But, that did not solve the problem.
The fuel is about a year and a half old. but it had been stabilized and additives such as seafoam added to it. again there is no miss firing that i can tell on the engines, no back fires or sputtering, nothing to indicate its starving for fuel. I checked the plugs they are not fouled, they are about 2 years old though.
Any Ideas?
Would one small chip in one blade of the prop cause both engines to not get over 3200 rpm and the vibration?
At the end of last season, after not using the boat for most of the season, I noticed that the engines ran fine at no wake speed as I drove out to open water. But, once I throttled up to WOT, I felt a slight vibration from the engines, I couldnt get above 3200 RPM and the boat would not get up on plane. There were no miss fires, back firing, or anything that indicated the engines were not getting enough fuel. Since it was the end of the season, I just waited for it to get pulled from the water for winterization to inspect the drives. Both drives and the bottom were covered with barnacles. So, i figured it was the drag from the barnacles causing the issue. barnacles were scraped and cleaned. I did notice a slight chip in one blade on one prop, but nothing major.
Now, here we are at the beginning of the new season and the same issue is happening. I checked the drives to make sure they were completely down. I have replaced the distributors and rotors ( the old ones did have corrosion on the contacts) But, that did not solve the problem.
The fuel is about a year and a half old. but it had been stabilized and additives such as seafoam added to it. again there is no miss firing that i can tell on the engines, no back fires or sputtering, nothing to indicate its starving for fuel. I checked the plugs they are not fouled, they are about 2 years old though.
Any Ideas?
Would one small chip in one blade of the prop cause both engines to not get over 3200 rpm and the vibration?
