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HELP!! SBT 720/717 Motor - ELECTRICAL PROBLEM
Hi,
Ok I realize there is a problem. My 717 idles fine, and acellerates to about mid power, but when the throttle is set to "wide-open" is when you start to notice lack of electrical power. The gauges stop, the stereo cuts out, and the engine starts to rapidly decelerate in RPM. The engine never stalls, but I have to move the throttle back to the starting position for the engine to "regain composure." Is it that I need 2 batteries to run all those apps at once on this boat, or is my charging coil or lightning coil or rectifier bad? I replaced the ignition and spark wires along with the magneto flywheel, but that is it electrical wise( I replaced those when I replaced the engine). The engine is an SBT rebuild from late 2004 and this problem started happening soon after I ran the boat through its 10th tank of gas last week. Also, I know the MPEM is fine because it was new in 2000. I am now in the process of removing the oil pump for suspision it is going to fail and instaling a block-off kit, so taking apart the flywheel casing to solve this problem is not a worry.
By the way the boat has a full-size 12V deep-cycle marine battery. I just refilled the cells with distilled water to the specified amount and charged the battery with a good charger.
Thanks :emotredf
Also- The problem may be the ground wire is connected to the exhaust manifold instead of to the flywheel casing like it was when originally new???
Ok I realize there is a problem. My 717 idles fine, and acellerates to about mid power, but when the throttle is set to "wide-open" is when you start to notice lack of electrical power. The gauges stop, the stereo cuts out, and the engine starts to rapidly decelerate in RPM. The engine never stalls, but I have to move the throttle back to the starting position for the engine to "regain composure." Is it that I need 2 batteries to run all those apps at once on this boat, or is my charging coil or lightning coil or rectifier bad? I replaced the ignition and spark wires along with the magneto flywheel, but that is it electrical wise( I replaced those when I replaced the engine). The engine is an SBT rebuild from late 2004 and this problem started happening soon after I ran the boat through its 10th tank of gas last week. Also, I know the MPEM is fine because it was new in 2000. I am now in the process of removing the oil pump for suspision it is going to fail and instaling a block-off kit, so taking apart the flywheel casing to solve this problem is not a worry.
By the way the boat has a full-size 12V deep-cycle marine battery. I just refilled the cells with distilled water to the specified amount and charged the battery with a good charger.
Thanks :emotredf
Also- The problem may be the ground wire is connected to the exhaust manifold instead of to the flywheel casing like it was when originally new???
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