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Thread: loss of power after beginning to run..only when engine has sat for some time

  1. #1
    Senior Member Islandgirl's Avatar
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    loss of power after beginning to run..only when engine has sat for some time

    Last several times out my honda has lost power after leaving the marina (cold start) when I was up through about 4000rpm. I would pull the power back and pump the ball which was Soft. Then I had no issues for the duration of the running time.

    The pattern is the same all the time. I am thinking that I need a new check ball (not sure what they are called?)
    to keep fuel pressure there.
    Any thoughts?
    “Keep your friends close – keep your enemies CLOSER!” The only problem I have ever had with that was figuring out who are “friends” and who are “enemies?" -Charlie

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    I think you may be correct, had the same prob with my kicker a while back. I drained the carb in case there was a water buildup (which there was) replaced gas filter and changed priming ball. problem solved.

  3. #3
    Senior Member Fish Assassin's Avatar
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    Time to buy a Yamaha...LOL

    My Yamaha does the same thing during winter months/cold weather/cold water times of year. So does the Merc. that we have at work. Priming the ball before hand does not even make a difference. Maybe all our balls are shot...LOL..Sick mind I know. Just a bunch of useless balls..HaHa... All I know is if I let my Yamaha warm up a bit then shut it down....Prime it then start it again..it runs like a top all day. I can run it in crapy mode for 15 mins then shut it down and pump the ball and wait. All is good. just the same. Why they do this is beyond me.

    If you find a answer let me know.

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    Senior Member Fish Assassin's Avatar
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    Quote Originally Posted by -steelhead- View Post
    I think you may be correct, had the same prob with my kicker a while back. I drained the carb in case there was a water buildup (which there was) replaced gas filter and changed priming ball. problem solved.
    Where did the water come from?

    If so Islandgirl where did you buy your gas as I will not go there. Scary stuff if this is the case.

  5. #5
    Senior Member Island Fish Lifter's Avatar
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    Hey Island girl- definately sounds like its an air lock developing in your hose. One thing to check before buying a new bulb- ensure that the outlet end of the bulb is facing up because if not, the checkballs may not be seating properly and fuel can drain back.

  6. #6
    Senior Member Fish Assassin's Avatar
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    I can see that being a problem...But if it is not. Is this weather or temp. related as I think mine is. Almost sure of it.

    Maybe is two different problems but it sounds the same. And we are both running our boats in the same water. With in a mile or 4....

  7. #7
    Senior Member Islandgirl's Avatar
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    Quote Originally Posted by Island Fish Lifter View Post
    Hey Island girl- definately sounds like its an air lock developing in your hose. One thing to check before buying a new bulb- ensure that the outlet end of the bulb is facing up because if not, the checkballs may not be seating properly and fuel can drain back.
    IFL my ball sits at aprroximately 40 degrees of vertical. I need to run a longer hose from my fuel water separator to the ball to get it vertical. So I could replace the fuel line first or just replace the ball and fuel line. The ball is almost 7 years old and I have over 950 hours on the main (ball) so maybe it is just wearing out.
    “Keep your friends close – keep your enemies CLOSER!” The only problem I have ever had with that was figuring out who are “friends” and who are “enemies?" -Charlie

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    I would also check your vent tube believe it or not spiders can get in there and make a web so your tank cant breath properly seen this before also check your lines I had this exact issue with my boat,my kicker motor wouldnt keep a prime turned out to be the fricken spider and also a bad ball.Dont buy the bulbs that are blue and have the different plastic fittings that thread into the end of the bulb they are junk get one that is factory clamped with the right size ends for your hose these have been pressure tested at the factory and should eliminate your troubles good luck with your issue.put your ear down where your bulb is with everything off so its quiet and sqeeze it you might hear a hissing sound then you can trouble shoot where the problem is.

    tight lines
    Billydoos

  9. #9
    Senior Member Islandgirl's Avatar
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    I replaced the ball, and I still have the same issue.. Last night the boat was parked on quite a slope, my driveway. I noticed fuel slowly dripping out of the boat drain plug hole on this slope. today I have pulled up the floor. The only place I can think that it would leak would be the gasket around the fuel transducer mounted on top of the tank. All the hoses look good and there is no staining anywhere that I can find. Or maybe the vent tube is plugged and putting addtional pressure on the system?

    From the fuel filler neck, the fuel hose breaks into 3 lines, one large and one small into the rear of the fuel tank (by the engine), then one line continues into the front of the tank(front of the boat) This would be the vent line I believe so the tank is vented into itself. I have not yet pulled up the flooring on the front part of the boat since I have to remove seats.

    Any thoughts?
    Last edited by Islandgirl; 06-19-2011 at 10:49 AM.
    “Keep your friends close – keep your enemies CLOSER!” The only problem I have ever had with that was figuring out who are “friends” and who are “enemies?" -Charlie

  10. #10
    Senior Member Charlie's Avatar
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    Quote Originally Posted by Islandgirl View Post
    I noticed fuel slowly dripping out of the boat drain plug hole on this slope.

    Any thoughts?
    I believe gas coming out the boat drain plug, might be a big problem! It sounds like you could have a leak in that gas tank itself? Might be time to get a pressure test and some help on that one!

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