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1976 Mako 19 Gas Tank issues

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  • CaptJim
    replied
    quote:


    Originally posted by DukeS


    any time you smell gas in the bilge you are in danger. if it is only when the tank is full it might be the hoses, but my tank was corroded around the top of the sides only. Do you have a fuel water separator between the tank and the engine?


    1) check the fill, vent hoses

    2) pull the tank.


    Very dangerous! My '82 21 Mako had corrosion on the tank top which was not noticed until I had the coffin lid off and was inspecting the tank and hoses. I started cleaning a few corrosion spots and discovered holes beneath the corrosion.

    Better replace it. It is a bomb.

    Leave a comment:


  • FarleyPalmer
    replied
    If you've already gotten that far...replace the tank! Its a 1975...well beyond it's replacement date.

    Leave a comment:


  • Phassett
    replied
    Hey experts... thanks for the advice:

    I pulled the consul, then the hatch that covers the tank.

    The Small hatch that covers the hoses would have shown me the main problem, that is the fill line and the vent line had been spliced and the hoses were rotted... the fill hose was half melted.

    Now also I have a corroded fill pipe next to the weld (it shows in the photo). So... should I try to get that welded or just replace the entire tank?

    I will be scraping off the foam today to examine the rest of the top of the tank today.

    I'm still working on posting the photos ... next message thanks

    PH

    Leave a comment:


  • Phassett
    replied
    test
    ..........

    Leave a comment:


  • mako19
    replied
    I have a 1975 19-foot center console Mako. I replaced my fuel tank last year. Lots of pinholes in the end of the original tank from old age. Wasn't really a problem pulling the tank from the coffin under the center console. Did not have to unhook any cables. Usually there is enough play to unfasten the center console and elevate on 2X4's. Remove the coffin lid. On my mako, the fuel tank was snug and tight because of the foam, but was able to muscle out pulling up and forward towards front of boat. I ordered a new tank from Sunshine tanks in Florida who now has the 1975 Mako dimensions. When i cut up teh old tank, it was in surprisingly good shape except for teh area with pinholes. I coated teh new tank with coal tar epoxy to last forever and then fiberglassed the coffin lid to keep water out permanently.

    Mike

    Mako19

    Mobile Alabama

    Leave a comment:


  • Phassett
    replied
    OK Thanks I will be getting started

    Leave a comment:


  • brando
    replied
    No tricks, yes it's a hassle, disconnecting the wiring etc is the easy part. Sometimes getting the tank out can be a bear. Lots of us on here did it so you are in good hands. Start reading over some of the guys project pages to get more info. Do a search and change it to subject only and type in fuel tank or fuel tank removal or something like that.

    Leave a comment:


  • Phassett
    replied
    Thanks for the feedback...

    I replaced the vent hose and fill hoses, the short rubber hoses to the hull at the upper ends but not the metal hoses, I also added a clear glass filter that I was able to observe I didn't see any water in it.

    Looks like Ill be pulling the tank. Is this a major hassle with disconnecting he wiring and steering and throttle in order to get the console out of the way, or are there any tricks?

    Thanks

    PH

    Leave a comment:


  • brando
    replied
    If your smelling fuel in the bilge you can have several issues going on. Vent and fill lines dry rotted, gas tank leak. I would pull the tank and take a looks at it. Your motor could be stalling out due to air and or dirt in tank. Just some thoughts. Does your outboard have a fuel filter on the motor where the fuel line comes in?

    Leave a comment:


  • DukeS
    replied
    any time you smell gas in the bilge you are in danger. if it is only when the tank is full it might be the hoses, but my tank was corroded around the top of the sides only. Do you have a fuel water separator between the tank and the engine?

    1) check the fill, vent hoses

    2) pull the tank.

    Leave a comment:


  • Phassett
    started a topic 1976 Mako 19 Gas Tank issues

    1976 Mako 19 Gas Tank issues

    Do I really need to replace my Gas Tank?

    The symptoms are: Smell of gas in the center console (very strong when full), and stalling out when at cruising speed for a while. Also-- smell of gas in the bilge when tank is full.

    Normally it runs fine, but stalled out 3 times going to Catalina from Dana point... a 40 mile cruise. It would run again if I re-primed with the hand pump, or raise the engine and lower it again. I replaced the fuel hose from tank to engine, and it did it again on my last outing. Seemed to stall more often after the fuel level was down by at least 1/4 tank.

    A friend of mine said to pull the tank and replace it because it must be rotted out! Starting to convince myself he must be right.

    any input from you experts?

    Thanks

    PH
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