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  1. M

    60hp Merc intermittent power loss

    Ok, this should be the last post on this topic...I decided to take apart the fuel pump to see if that was maybe the problem, and sure enough the little round valves were torn, and one of the small rubber fasteners was actually broken in half! I am actually surprised it still worked as well as...
  2. M

    60hp Merc intermittent power loss

    Ok, I'll try that next...the time it worked it was quite windy, but I did go into a bay for a while where the water was much calmer. Like I said, I drove around for quite a while at high speed with no issues whatsoever. Later in the day, water was calm and the problem came back twice.
  3. M

    60hp Merc intermittent power loss

    Ok, problem is back now, so frustrating...went out just now and it bogged down twice. This issue is so randomly intermittent, I will start checking fuel lines in the engine next
  4. M

    60hp Merc intermittent power loss

    So i changed out the fuel line and bulb, and the issue is still there. Checked the dip tube in tank (it's a built in tank) and the screen seemed spotless. Just to be sure, I then took it out for a run, with the fuel line put directly into a 5 gal Jerry can. It ran perfectly at high rpm for an...
  5. M

    60hp Merc intermittent power loss

  6. M

    60hp Merc intermittent power loss

    I did the bulb test on the weekend and the engine recovered after maybe a half second delay, and then ran smoothly. I have a new bulb/fuel hose which I will install next weekend, hopefully the bulb was the problem, we'll see
  7. M

    60hp Merc intermittent power loss

    Ok, I'm back, experiencing same problem this year. I brought the boat into the shop last fall, and due to covid and the time of year they could not do a water test, but they did change the spark plugs, they said that could be the cause...anyway, first time out this year same issue. I am at a...
  8. M

    60hp Merc intermittent power loss

    Hi, my name's Mike, I've been a longtime browser of this website, but first time posting. I am hoping someone has some ideas to help me...I have a 2005 60hp Merc bigfoot EFI on my pontoon boat, and I have been experiencing some power loss which is progressively getting worse. The issue occurs...
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