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  1. JustJason

    If you're wondering if your anti siphon valve is stuck, or clogged, here's a test....

    It rotted out from the inside out. The boat builder (who shall be nameless) put the filter in the worst possible spot. I don't think the technicians knew it was even there. I didn't see it until I took an angle grinder to the boat and personally cut the splashwell out of the boat. What's...
  2. JustJason

    If you're wondering if your anti siphon valve is stuck, or clogged, here's a test....

    I would be careful. If your fuel system is designed in a specific way, some form of antisiphon protection is federally required, be it a valve or a solenoid. I recently completed an investigation on an insurance claim where the boat, outboard powered, started and ran fine on a Monday. On...
  3. JustJason

    If you're wondering if your anti siphon valve is stuck, or clogged, here's a test....

    https://forums.iboats.com/threads/how-to-testing-your-boats-fuel-system.278553/ I wrote that back in 2008. That will tell you how to test it. The only caveat is that it was really written for older inboard carbureted engines. On all modern-day EFI/DFI/HPDI/GDI engines, you really don't want to...
  4. JustJason

    2005 4.3 liter Mercruiser ignition trouble

    Get a 12-14 gauge jumper wire with alligator clips and clip one end to the same terminal on the key switch, the other end to the positive terminal on the ignition coil. Just run the wire right across the boat. Bet it starts.
  5. JustJason

    Were we experiencing vapor lock?

    Thanks! I miss New England. Florida has been good to me, but I don't necessarily love it here. I wish I could live in the middle of the woods in New Hampshire, but that wouldn't do much for my career. I'm happy to hear that you are doing well!
  6. JustJason

    Alpha one gen one trim won't go all the way down

    I hear you, but some locales don't care about water pollution, while others take it very seriously, with serious fines. As an outdoorsman, I would hate to see an oil slick behind your boat on a pristine lake, especially knowing that you know about it. But to each their own....
  7. JustJason

    Alpha one gen one trim won't go all the way down

    If you had to top off the power trim fluid, then the system leaks somewhere that needs repair.
  8. JustJason

    Keep blowing my starter solenoid up.

    It's because you are confusing Ohm's law with Watts law. Do ohms law and ohms law only, see what you get. Remember, your light bulb is a linear resistor, so Watts' law doesn't apply the way you think it does.
  9. JustJason

    Keep blowing my starter solenoid up.

    I think you mean R = Infinity...... R = 0.0 is a dead short :)
  10. JustJason

    Were we experiencing vapor lock?

    Lol, busy. I've been doing insurance claims work as an expert for the last 5 years. Between Hurricanes Ian, Helene, and Milton, plus everything else in between, I haven't had time for anything. How have you been?
  11. JustJason

    Were we experiencing vapor lock?

    It's possible the injectors are leaking down and the engine is flooding.
  12. JustJason

    Keep blowing my starter solenoid up.

    No, it's not, you have 2 separate problems. The contacts on the solenoid are open when the engine is running, not closed, and 16.8 V is not going to jump those contacts and burn them. First, you are having an issue with your slave solenoid, not the starter solenoid; they are 2 different...
  13. JustJason

    Keep blowing my starter solenoid up.

    saved
  14. JustJason

    Keep blowing my starter solenoid up.

    It's true that V = I X R If you are trying to solve for voltage. If you are trying to solve for current, it is I = V / R If you are trying to solve for resistance, it's R=V / I So, let's do a couple of equations. Let's say we have a light bulb that is 1 ohm of resistance, and we are using 12...
  15. JustJason

    Trim Problem

    Because the switch has excessive carbon build up, or possibly corrosion on the internal contacts, which causes a voltage drop. Replace the switch.
  16. JustJason

    200hp Optimax Intermittent Overheat

    When the engine overheats, is the engine at low RPM or high RPM?
  17. JustJason

    Engine wouldn't fire without throttle after overnight

    So it could be anything, but where you would start is by checking for fuel pressure leakdown and throwing the scanner on it to check for codes. Having to open the throttle to start the engine can be an indicator that the engine is flooded, which will happen if the injectors are leaking, but it...
  18. JustJason

    1972 mercruiser water issue

    If you are sure the water pump assembly is assembled correctly, It's probably the water seal in the upper unit where the water pump output pipe connects. When that seal goes bad, it leaks like a sieve internally. Which means not all of the water leaving the pump makes it to the engine at lower...
  19. JustJason

    Insurance

    One would be silly not to have at least liability, environmental, and wreck removal insurance. All of which are policies that can be purchased without requiring any additional coverage for the hull value itself.
  20. JustJason

    Mercruiser 3.0L LX - EST Ignition - how to check for proper spark?

    The easiest way to check for spark is to clip a timing light to each plug wire, one at a time, and see if the timing light flashes evenly and consistently with engine RPM. If it doesn't there is a spark issue; if it does, there isn't a spark issue. Just make sure your plugs are new and the plug...
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