Recent content by muc

  1. M

    Merc 250 Verado Fuel increase

    Might check the battery in your meter, my cheaper meters tend to start drifting off when the batt starts getting lower -- my high buck meter is rock solid until the lo batt pops up in the display. Have you looked at your charger? Back when I worked for a Chap dealer they came with low cost...
  2. M

    Advice / Tips for Draining Old gas and checking fuel lines.

    The biggest mistake I see when a DIY tries to drain their fuel tank. They try to suck it out with the existing fuel lines. This results in failure. The problem is that the tube that goes into the tank stops about 1" from the bottom so they don't get all the fuel, and what they leave in the the...
  3. M

    Merc 250 Verado Fuel increase

    Something that popped into my head, it doesn't fit with the vibration you experienced. But might be something that could effect the unequal fuel burn. Your engines have software called ARO --- advanced range optimization. This will adjust fuel and spark when certain parameters are meet. When...
  4. M

    5.7 gsi pwtr Timing shunt procedure contradictions

    Thanks to @alldodge back in 2016. Note that you do this after engine is up to temp and running when you jumper.
  5. M

    Merc 250 Verado Fuel increase

    Soo sorry this is happening. Most boaters would be devastated. I hope they make you right. "They need to fix what they damaged" Yes you do have the right to made whole. Take many many pictures. Start far enough away so it shows the whole boat "click" (had an adjuster out the other day and he had...
  6. M

    Larson, 4.3 GL-J, SX-A electrical gremlins

    I don’t agree with this statement. I’ve worked on hundreds of carburetor boats that have hour meters. Hour meters came stock on many upper level boats. This is a Larson (generally considered a price point boat) so an hour meter would have been a dealer installed or Larson factory option. If it...
  7. M

    Larson, 4.3 GL-J, SX-A electrical gremlins

    1+2 - this is the oil alarm sender, replace it, it tested bad. 3 - oil gauge sender will be aft of the carb, very near the distributor. Test it just like you tested trim sender. Dark blue wire. That thing in the second pic is the fuel pump and that's the fuel filter under it.
  8. M

    Merc 250 Verado Fuel increase

    Techmate should have a run fuel pump function.
  9. M

    Merc 250 Verado Fuel increase

    Did you run the pump long enough to get fuel with no air in it? I would try to avoid getting confrontational with Merc until they stonewall you on a no coverage issue. This low pressure issue must be addressed. Like I said -- fuel problems are one of the biggest killers of these engines.
  10. M

    Merc 250 Verado Fuel increase

    Yes test equipment like meters and gauges need to be double checked every once and a while. Suggest you hook up shore power overnight and check float voltage on the batts. Note you will need to check this before you use any electricity on the boat.
  11. M

    Merc 250 Verado Fuel increase

    Yes, I've heard about this problem from customers. It seems the water in fuel harness can get out of place when changing the fuel filter. But, as I tell those customers. Your owners manual clearly states to have the motor trimmed up when removing and replacing the cowl. This will help keep this...
  12. M

    Merc 250 Verado Fuel increase

    Good you found the issue with leaking. My guess is nothing will happen. You should still be in the EPA warranty, so still within your rights to demand repair. 45psi is low. but within some gauge tolerances. Also did you bleed all the air out before testing? Did you check the port engine to...
  13. M

    Merc 250 Verado Fuel increase

    You should never have to use any tool to check fuel pressure. Yes, it sounds like you may have damaged the schrader valve threads. Stop and inspect any time more then fingers aren't enough. I should have worded that better. By all 4 I meant both engines. Port engine maybe able to give you a...
  14. M

    Larson, 4.3 GL-J, SX-A electrical gremlins

    A little less of a chance for foaming with VP fluid. ATF is fine.
  15. M

    Merc 250 Verado Fuel increase

    For the batts, will the techmate show cranking voltage? Check check your owners manual for the battery charger, it might need to be reprogramed. That is more of a difference than I normally see. The two beeps on stbd startup might point to a voltage drop. Same fuel pressure fitting that's been...
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