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need help

  1. #1
    Senior Member jamesblown97's Avatar
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    Default need help

    im running a 455 olds motor with a berkley. my problem is that ill make a few passes across the lake go back to shore and hang out for a while ill do this through out the day. boat always fires up great but last 2 weeks about 4-6 hours into the day the boat will just die. ill wait a while and it will fire up like always and away we go. vapor lock issue maybe? it still has the mechanical pump on it but im putting an electric on it this week with an adjustable regulator. is there anything else i should look at or do you think im on the right track

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  3. #2
    Member Katanna's Avatar
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    Default Starving

    mechanical fuel pump shouldnt cause an issue. any chance some spiders made a nest in your fuel vent during the winter? next time it happens open the fuel cap and see if it makes a difference.

  4. #3
    Senior Member jamesblown97's Avatar
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    well i just bought the boat and found out that the fuel line from the tank to the back is 3/8 hard plastic air line so im sure that its not doing me any favors so ill be changing out the fuel line for metal this week and see what happens along with checking the vents and stuff before i go with electric. all my filters are new so i know thats not an issue

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  6. #4
    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by jamesblown97 View Post
    well i just bought the boat and found out that the fuel line from the tank to the back is 3/8 hard plastic air line
    for the sake of diagnosis is it safe to assume "THE TANK" is a bow tank?

  7. #5
    Senior Member jet460's Avatar
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    Make sure you have a pre-pump filter on there. I use the clear glass type so I can see exactly what is coming in, and it can be removed, cleaned, and put back on in 2 minutes. You would be surprised what a tiny chunk of debris can do to stall you out.
    100 years from now, none of this will matter.

  8. #6
    Boat Nut sleekcrafter's Avatar
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    Might check the tank composition, if it is fiberglass, be ready to replace soon, if your using ethanol blended gas. A fuel pressure gauge at the carb would be benificial, in diagnosing no start situations.
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  9. #7
    Senior Member jet460's Avatar
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    Quote Originally Posted by sleekcrafter View Post
    Might check the tank composition, if it is fiberglass, be ready to replace soon, if your using ethanol blended gas. A fuel pressure gauge at the carb would be benificial, in diagnosing no start situations.
    X2.
    100 years from now, none of this will matter.

  10. #8
    Senior Member jamesblown97's Avatar
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    yes the tank is in the bow and i have a filter before the pump and before the carb and both are new and good the tank is a metal tank and the only fuel i run in it is premium pump gas. but i agree a fuel pressure gauge is a good idea and ill be putting one on there this week when i start working on it. so for now im going to put a new mechanical pump on with new 3/8 fuel line (not airline) from the tank to the motor and im going through the carb tomorrow along with a gauge hopefully it will take care of my issues or at least point me where i need to be going

  11. #9
    old HB member. 4604me's Avatar
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    does the just boat die will crusing, if so it could be electrical. poss coil, they can heat up inside and go bad, cools off motor starts? happened to me.
    just a half turn before it breaks.

  12. #10
    Senior Member jamesblown97's Avatar
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    yea ill be cruisin around and it will just die no sputter no popping nothing just lose power and crap out never thought about the coil but it may be something to consider thanks ill check it out as well.

  13. #11
    Senior Member ol guy's Avatar
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    Feul issue maybe! If you go out for a spin a few times and no issues, I would check to see if it has a ballast resistor? BUT back to the feul tank----you could be out stirring up nasties that were there prior to your'e purchase of the boat. Check the bottom of the tank or tanks by siphoning of the bottom into a clear container and watch how it settles, M

  14. #12
    Senior Member jamesblown97's Avatar
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    yeah im going to check give the tank a very thourough checking this week while im doing other stuff to it to get ready for the lake this weekend

  15. #13
    old HB member. 4604me's Avatar
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    once I had a tac short out inturnally made the motor die. disconnected it at the coil she ran fine. if your running a ballist resister and points, toss them for a petronix and new coil, or somthing better.youl be happier, good luck.
    just a half turn before it breaks.

  16. #14
    Senior Member orange bahner's Avatar
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    Doesn't sound like a fuel problem if it just dies without lossing power first Sounds more electrical. What kind of distributor are you running I have seen HEI module do the same thing when they get hot.
    Break Out AnotherThousand


    A good friend will comes bail you out of jail, BUT a True friend will be sitting next to you saying "Damn we f#*ked up"

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