Just to start, thanks for reading this. I know its my first post but this thing is giving me a hell of a time and I need some help. As you can see in the title of the thread the boat is a '96 sugar sand marine mirage with the sport jet 120xr. Now, a little history.
I'm in the process of buying this from a friend but I wanted to make sure that it was worth purchasing. I picked up the boat heavily flooded inside (plugs in but water level below carbs) and really dirty. I drained the electrolyte from the battery, refilled and charged it to full charge. First few attempts to start were uneventful and not even a fire was heard. I pulled off the intake silencer and primed the engine to find the lower carb blowing fuel out if the inlet. I then rebuilt both carbs and synced them to eachother. I pulled the plugs, they were a little fouled but not bad so I cleaned them and reinstalled.
Now, the boat starts and runs great until you get passed about 1/2 throttle. If you go WOT or even about 3/4 throttle the engine will respond with a large amount of thrust followed by bogging down and eventually quitting if you leave the throttle in place. If you pull back to about 1/4 throttle power will be restored but you can only use about 1/2 throttle without it bogging down. I noticed a automotive style fuel filter installed between the fuel pump and carbs so I removed it and replaced the fuel line and the engine began to run a little better. I have ordered a fuel pump rebuild kit and hope to remedy this problem with it. You think this will work?
I'm getting an alarm when I hit waves about 1-2ft tall. I'm assuming this is a low oil alert since it happens only when the bottle is about 1/2 full or less. It just beeps once for a short second. Is it possible to have a loose connection under the dash or does the key cylinder have a plug on the back? If you over temp this engine, will it be alarm be intermittent like this or a constant beeping?
My steering is pretty hard and it seems to be all over the place under power yet the cable seems to have little slack. Is there anything I can do to fix this?
I'm also replacing the jet drive fluid in the morning, anything I should look out for?
Thanks ahead of time!
I'm in the process of buying this from a friend but I wanted to make sure that it was worth purchasing. I picked up the boat heavily flooded inside (plugs in but water level below carbs) and really dirty. I drained the electrolyte from the battery, refilled and charged it to full charge. First few attempts to start were uneventful and not even a fire was heard. I pulled off the intake silencer and primed the engine to find the lower carb blowing fuel out if the inlet. I then rebuilt both carbs and synced them to eachother. I pulled the plugs, they were a little fouled but not bad so I cleaned them and reinstalled.
Now, the boat starts and runs great until you get passed about 1/2 throttle. If you go WOT or even about 3/4 throttle the engine will respond with a large amount of thrust followed by bogging down and eventually quitting if you leave the throttle in place. If you pull back to about 1/4 throttle power will be restored but you can only use about 1/2 throttle without it bogging down. I noticed a automotive style fuel filter installed between the fuel pump and carbs so I removed it and replaced the fuel line and the engine began to run a little better. I have ordered a fuel pump rebuild kit and hope to remedy this problem with it. You think this will work?
I'm getting an alarm when I hit waves about 1-2ft tall. I'm assuming this is a low oil alert since it happens only when the bottle is about 1/2 full or less. It just beeps once for a short second. Is it possible to have a loose connection under the dash or does the key cylinder have a plug on the back? If you over temp this engine, will it be alarm be intermittent like this or a constant beeping?
My steering is pretty hard and it seems to be all over the place under power yet the cable seems to have little slack. Is there anything I can do to fix this?
I'm also replacing the jet drive fluid in the morning, anything I should look out for?
Thanks ahead of time!