True North
Member
- Sep 11, 2012
- 165
- Boat Info
- 2005 SR 260DA
350 MAG MPI
Bravo 3
- Engines
- (1) 350 MAG MPI w/Bravo III
1988 SeaRay 270 Sundancer, twin 4.3L motors, original, approx 1400+ hours on each. Many hours trolling. Boat is mechanically and cosmetically in great condition for a 30yr old classic.
Last season I noticed my starboard motor had developed an irratic rpm drop while trolling. I had also noticed while underway, my motors would go in and out of synch. I thought it was a carb issue, but yesterday I ran both motors on the muffs and noticed that my starboard motor voltage would read 13-14V on the dash voltmeter, but then would jump to 17-18V and that's when I would notice the drop in rmps, almost like the motor was under load.
One thing to note, it is my port motor that has an alternator on, starboard has the power steering.
So what is the significance of my voltage spiking and causing load on the motor? There doesn't seem to be any rhyme or reason of how often or how long it stays in that "bogged down" state. Sometimes from a few seconds to probably a minute or two. I have no clue where to start outside of the internet search, and I thought I would start here. I thank you in advance for your assistance.
Last season I noticed my starboard motor had developed an irratic rpm drop while trolling. I had also noticed while underway, my motors would go in and out of synch. I thought it was a carb issue, but yesterday I ran both motors on the muffs and noticed that my starboard motor voltage would read 13-14V on the dash voltmeter, but then would jump to 17-18V and that's when I would notice the drop in rmps, almost like the motor was under load.
One thing to note, it is my port motor that has an alternator on, starboard has the power steering.
So what is the significance of my voltage spiking and causing load on the motor? There doesn't seem to be any rhyme or reason of how often or how long it stays in that "bogged down" state. Sometimes from a few seconds to probably a minute or two. I have no clue where to start outside of the internet search, and I thought I would start here. I thank you in advance for your assistance.