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  1. J

    03 5.7 350 with Bravo 3 drive keeps stalling and racing

    So after I bought 3 crank position sensors the last one came with two thin washers that said to install as spacers because thrust bearings wear out on old motors and you need to maintain a gap or the magnet will scrape it up. She running smooth now!
  2. J

    Mag 350 5.7 Still overheating

    No it doesn't have a water pressure gauge but I do inspect the leg for proper exhaust water flow at wash down. I get what seems to be really good flow. It doesn't take long to cool the engine raw water down on the hose. I think its either thermo sensors or oil pressure.
  3. J

    Mag 350 5.7 Still overheating

    Just had her out and she was running much better. I did get an alarm after running for about 4 hours but no high temp on the dash. I did notice that the oil pressure gauge was reading low.. between 10-0 but I'm pretty sure the gauge is messed up because it sits well below zero when the key is...
  4. J

    Mag 350 5.7 Still overheating

    Hello, I have an 03 Regal 2665 with a 06 350 Mag 5.7 that I rebuilt with some pro help about 6 months ago. The serial number for the motor is 1A041519 . Last month I re-did the exhaust risers, manifolds and elbows after the motor started running hot. Since then it seems to have helped a great...
  5. J

    Scratched Crankshaft Postion sensor on 03 5.7 mercruiser 350

    Just replaced Crank Postion Sensor and noticed the old one was scratched up pretty bad. I replaced the sensor and started stalling again after a while. Pulled the new sensor and noticed that one is scratched up as well. Would anyone know what would cause this and how to fix?
  6. J

    03 5.7 350 with Bravo 3 drive keeps stalling and racing

    I have an 03 5.7 mercruiser stern drive that we just did an engine rebuild on and now when I start it up on the trailer (after running smooth for almost 20 hours now) she runs smooth for a few minutes and then starts trying to stall out. At first it just sounds like a few misses but eventually...
  7. J

    High fuel pressure on 04 Mercruiser 350 5.7

    Hello.. I’m currently in the middle of an engine rebuild on an 04 mercruiser 350 5.7 and when we dropped the engine in and started it up I t was smoking black pretty bad and running poorly... especially after throttling up. We pulled and cleaned the injectors and hooked up a computer that told...
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