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  1. J

    Penta 4.3 Overheating

    Hey guys, sorry I havent updated. Im 99% sure I've got a "vacuum leak" somewhere between the sea water intake at the bottom of the outdrive, and the hose going into the boat at the top of the outdrive. I'm having a hell of a time finding info on that area. Do I have to take off the whole damn...
  2. J

    Penta 4.3 Overheating

    Thanks for the response. I pulled the stat yesterday as part of exhausting all components. It only appeared rusty, but I know it works because the water will flow to exhaust only when filling the top bleeder while its hot. I feel like I've gotten all the old loose rubber impeller blades out when...
  3. J

    Penta 4.3 Overheating

    I’ve had the boat 2 years. The doctor that had it before me knew nothing about boats so I’m sure he never changed it. the fitting looks ok. At least it didn’t show a leak when I back flushed.
  4. J

    Penta 4.3 Overheating

    Buckle in for this one. Hoping someones experienced this exact thing. 1)replaced impeller, yes it was destroyed. I wasnt aware theses should be changed more often. 2)pulled off water pump. still works 3) flushed entire system with fresh water garden hose( did see bits of the old impeller)...
  5. J

    Penta 4.3 no voltage to FP relay

    Ended up being a 7.5 fuse hidden near the starter relay, for those who encounter this. This is in no schematic. Another amazing feat by some brilliant engineer
  6. J

    Penta 4.3 no voltage to FP relay

    Thanks BT. I'm assuming 17 is the starter relay and 25 is FP relay. Some of my colors are different. And theres a double input wire on the FP relay
  7. J

    Penta 4.3 no voltage to FP relay

    Hello, I can jump 12v to my yellow/red wire and FP runs. Cannot seem to get any voltages to the relay while cranking. New FP relay. (bad diode?) Also very hard to find accurate schematics. Amazingly the literal owners manual has every schematic but this area.
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