Re: '91 Force 90hp
There is a way to increase the throttle, but it depends on what controls you have on your boat. On a Comander 3000, you push in the center of the controls shift handle, where it pivots at the bottom. This disconnects the shifter and allows you to increase throttle.<br /><br />On some controls, you pull the throttle handle inward, toward the drivers seat. Some have a lever that you raise.<br /><br />Next time you are out, try running the engine with the cover off. You could have an exhaust leak, or a heat related issue, causing the coils to fail when hot. <br /><br />Since the engine starts cold, I'm leaning toward a heat or ignition issue.<br />Since it doesn't stall at full throttle, fuel delivery should be ok.<br /><br />Full throttle rpm's are low, they should be 4900-5250.<br />This could be because of the wrong size prop, or because you are missing on one cylinder. You would probably NOT be able to hear the miss.<br />I would check for spark on each cylinder when the engine is cold. Check again when engine is hot and you are experiencing problems.<br /><br />How is accelleration from about 1500rpm to full throttle?<br /><br />Does the boat struggle to get up on plane?<br /><br />At this point, I wouldn't take the dealers word on the compression. He should have given you specific numbers for each cylinder. Preferrably 110# or higher, and not more than 15# difference between any two. See if you can get someone else to check it for you.<br /><br />Keep the info coming, and we'll do our best to get you thru this.
