HT leaking petrol/fuel cap

Discussion in '2-Stroke Engines' started by Stink Bike, Mar 3, 2008.

  1. Stink Bike

    Stink Bike Member

    The fuel/petrol cap on my happy time 70cc tank is leaking.
    Should I buy a replacement cap from my dealer Zbox or is there a better alternative that might be available in Sydney Australia?

    Thanks
    Mick
     

  2. fetor56

    fetor56 Guest

    Leaking Cap

    The "new" fuel caps on some websites are not supposed to leak but Warren is pretty-much on the ball like that...if he had a proper non leaking fuel cap we would have known about it by now.You could email him and see that he sayes...there might be an improved version.Mine leaks slightly and i havn't found any real solution.
    cap.jpg
     
  3. BoltsMissing

    BoltsMissing Active Member

    Mine leaked when I filled it with fuel almost up to the brim, when riding and the engine running.
    Since then I only fill it up to the bottom of the neck/spout of the tank and had no problems since. Yes, I was surprisedd it leaked at all.
    I have just come to accept these things now with the HT and hope in time all the bugs are ironed out, keep reading the forum's post, there's a fix for just about everything and it's gratefull to learn or re-hash simple mechanical skills.
     
  4. I want a locking gas cap. That way no one makes off with it.
    You would think if you doubled up on the rubber gasket under the gas cap it would help seal a bit better.
     
  5. BoltsMissing

    BoltsMissing Active Member

    Yes, agreed. It's on my agenda to. We have to see what model cars at the wreckers fit the tanks with locking caps.
    Maybe a complete modification of the tank, where the top is cut off, and not only the locking cap is fitting and leak-proof, the tank it came from is cut off to, and welded on the HT tank.
    That way you have a matching pair, tank spout and cap.
    I knew I should have done that on the Merc before it went to scrap !
    Anyway, some cars fill spout is connected by a rubber tubing to it's tank, so it will be simple to undo or cut the rubber tubing. Then all you do is cut and weld onto the HT tank.
    Becareful when working with or welding petrol tanks. Fill it and rinse 3 times with water first.Allow to dry and add water again.
    Hopefully the HT tank won't rust away by then. Consider this option if not sure.
     
  6. I would just do that to a brand new tank.
     
  7. Hollywood

    Hollywood Guest

    I have doubled up on the rubber seal.Some times it works some times it don't.You may have to live with a half full tank of fuel.As for the tanks rusting you can line your tank with a product called Kleen,but it ain't cheap.
     
  8. azbill

    azbill Active Member

    I believe the tank sealer is called 'KREEM'
    not nit-picking...it will be easier to research/find if you have the right name
     
  9. I tried looking for a gas cap. I told the parts guy that I was looking for a locking gas cap for a 426 HemiCuda. He just looks at me and says "Really?"
    I was like "Naw but I know them holes are like this one" and showed him my cap.
    Nevertheless,the idea was right,but it's just a little too big.
    I'm looking at my tank and it seems a sleeve slides in the hole and is...it doesn't look welded on..maybe tacked on.
    Then I'm looking at my cap and I'm thinking "How hard would it be to put a key thing in this like off a household door..then have some tags come out when locked.
    But I only have one cap. But I would most definetly buy a locking one if someone figures this out.
    Then I went to the motorcycle shop and forget it. I'm not paying 140 bucks for a locker I need to weld to fit.
    I even checked lawnmower places and none of them lock.
    You know,though. I COULD take an automotive plastic screw on locking cap and since it's plastic I could carve it down. The sheetmetal in the tank can act like new threads and if done right you can screw it on tight and therefore leakproof. Then when it's locked it just spins.
    ...but I may run into some problems when I try to take it off. I mean what if with the key in and locked to turn,it won't turn up to remove the cap?
    Then that would be drama.
    Then another thought involves covering the entire cap and have that cover lock down. Then no one can get to your cap.
     
  10. fetor56

    fetor56 Guest

    I'm afraid this is going to be a question of trial and error(mostly error)....i'll try in a few automotive stores today but most of the locking fuel caps i've seen that look physically compatable are in sealed packages or their tamper proof in some other way.I suppose i could say to the salesman "let me open all those packages and at the end i might even buy one"..........i'm guessing his response. ;)
     
  11. They way they are packed here,just the cap is packed. The threads are exposed so you can try it out for fit without tearing the packaging.
    But Auto's and Motorcycles have a standard when it comes to fuel just like the fuel pumps have a standard when it comes to the size of their fuel nozzle.
    It's all universal sized diameter wise. And that size makes all automotive caps too big,at least in the states this is so.
     
  12. BoltsMissing

    BoltsMissing Active Member

    Maybe sumwun can try to ask the manufacturer to figure out a tamper proof looking cap ! ( and a new stainless steel rust-proof tank while they at it )
     
  13. Hollywood

    Hollywood Guest

    Sorry !!! Your right it is Kreen.
     
  14. Stink Bike

    Stink Bike Member

    I wonder if one of the emergency plastic replacement petrol caps that people use when they loose their petrol cap would work?

    They might be made to fit a wide variety of sizes.
     
  15. Check this out:
    http://www.iboats.com/Perko_Locking...04746207--session_id.601601427--view_id.39393

    Price is right. 1 1/2 diameter hole...sounds about right?

    The problem with our fuel tanks is the sheetmetal is so thin as to wear down at the area where our cap locks down,and in time this thin sheet metal area gets worn then you have a leak.
    So like Bolts Missing is saying,it rally doesn't look too hard getting that original cap assembly off. If you look down your tank it's a tube that runs down a few inches and it almost looks like a press fit.
    I tell you what if I had even a tack welder I'd be all over it.

    And if you don't need a lock but need a good seal less than 10 bucks:
    http://www.iboats.com/SeaDog_Deck_F...04747018--session_id.601601427--view_id.39781
     
    Last edited by a moderator: Mar 5, 2008
  16. fetor56

    fetor56 Guest

    Sorry Large but those must be Chinese links your posting cos they don't seem to work properly. ;)
     
  17. azbill

    azbill Active Member

    links work fine for me :D
     
  18. fetor56

    fetor56 Guest

    Wierd cos i just tried in 4 seperate browsers...thanks man,i'll try later.
     
  19. That's strange. I made screenshots of them.

    I kinda like that second pic now cause the price is right,there's a chain so you don't lose your cap and it seems it would take a bit more than a second to make off with the cap. Also the mounting holes I could silicone around the base then use rivets I would think then a little dab of silicone on top of that.
    And the fact that it screws on I bet with this thing you can turn your tank upside down and it won't leak.
    Think about this. You can actually lay your bike down on it's side and not have to worry.
     

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  20. fetor56

    fetor56 Guest

    IF i can get into that website later i'll take a closer look.I MUCH prefer the idea of the whole filler mechanism(particularly the key locking) but i gotta check freight costs aswell....some things just arn't cost effective.Since i live next to the waterfront there's a few Marine shops so i'll see what they have....ANYTHING Marine has to be top of the range.

    BTW...Taa man for posting those pics.
     
    Last edited by a moderator: Mar 5, 2008
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