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  1. J

    2005 350 Mag dropping fuel pressure under load

    Update here. There was a 1/4” drill socket used to plug the line during repower stuck in the line. I’d call that a fuel restriction LOL. I’m going to test tomorrow as the north wind was howling today on Lake Huron, gotta think that was the problem. No idea if I or a helper shoved the line on...
  2. J

    2005 350 Mag dropping fuel pressure under load

    Well I’m just full of problems I guess. I replaced the water pressure sensor and it reads correctly now. Score. Also I replaced the relay for computer because it was cheap enough. I was out for a much longer test ride this time testing at all different levels of rpm. Thought I was good after...
  3. J

    2005 350 Mag dropping fuel pressure under load

    That’s a good tip. So it can pull water from a seacock and also the existing supply? However would low water pressure shut the computer off completely?
  4. J

    2005 350 Mag dropping fuel pressure under load

    I will add that I connected to Vesselview mobile on my phone with the engine running and it stalled the engine.
  5. J

    2005 350 Mag dropping fuel pressure under load

    Alright thanks will do. Would you agree the ECM is shutting off though? Be it wiring or anything else.
  6. J

    2005 350 Mag dropping fuel pressure under load

    Well I’m sure you didn’t see this coming! I took the boat out while monitoring voltage at the fuel pump. The voltage would drop to 11v each time the stalling under load occurred. Thinking I had it figured out my Vesselview mobile data would cut out also, and then the ignition beep. Ignition beep...
  7. J

    2005 350 Mag dropping fuel pressure under load

    Alright I will get them tested, thanks. I’m still going to lose fuel pressure under load though. Hoping someone has some opinions before dismantling the fuel rail.
  8. J

    2005 350 Mag dropping fuel pressure under load

    Okay I looked again and they are new Bosch, not remanufactured. Still from eBay though. Unfortunately I’m not able to pay $200-$400 each for Mercruisers injectors. I’m willing to risk a bad injector over that much difference is price. Sounds like I’ll continue to isolate the problem with a...
  9. J

    2005 350 Mag dropping fuel pressure under load

    Thanks! They were rebuilt Bosch on eBay. $350 for a set. There were like 400 sets sold so I was hoping they were somewhat okay. I’m figuring a pressure drop that significant isn’t an injector. Would a regulator really be able to restrict the flow that much? Does all the fuel flow through the...
  10. J

    2005 350 Mag dropping fuel pressure under load

    Hey I’ve been hounding these forums but haven’t found a similar situation and have had no luck with recommendations. I have a rebuilt 2005 350 Mag MPI mercruiser with Bravo 3 drive. ECM 555 It was a repower into my older SeaRay. It starts and idles flawlessly. But under load after about a minute...
  11. J

    1976 40hp Evinrude Stuck In Forward gear

    I have a 1976 40hp Evinrude model 40655a. I bought a few months ago, rebuilt carb and got it running well. It is stuck in forward gear, the shift linkage in lower unit seems to be locked up in the gearbox. Runs in forward gear well, but no neutral or reverse. I have tried to shift it manually...
  12. J

    Should I buy?

    Hi, I am new to the forum, but have been reading a lot of threads! I've been looking at a 1989 Sea Ray 160 on Craigs. I have been looking for a few months with no real hits but I like this one! the price is right but it has a soft middle board over the gas tank. I know its a dirty job and all...
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