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Thread: XB9S Gas Tank (Frame) cleaning Help

  1. #1
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    XB9S Gas Tank (Frame) cleaning Help

    I have the sickness, just bought another Buell. First one was a 2006 XB12X
    This one is a 2003 XB9S and has been sitting awhile and does not start.
    The fuel pump is dead. I have bought all the parts to rebuild but my problem is inside the tank.
    While cleaning I notice a blackish coating peeling away form the tank sides.
    Has anyone ever come across this and how did you remove (clean) it?. I have attached pictures of the pump and the coating.
    pump.jpgbliackish coating.jpg

  2. #2
    Senior Member lunaticfringe's Avatar
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    ethanol blended fuel has a huge affinity for moisture. moisture turns to water. water "heavier" than fuel. where's it end up? the bottom of your tank which on an XB is at the pump and the bottom of left rear frame spar. your condition is the worst i've ever seen. better know what you're doing when you tackle that pump and have access to a glass bead cabinet. swab out the frame as best you can with rags and dedicated cleaners...flush out the rest...hope for the best.

  3. #3
    Senior Member rchuff's Avatar
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    Can even see corrosion of the aluminum frame. That was a lot of water in their. Hope it wasn't salt water .Almost looks like it might have been.

  4. #4
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    Yep, it is bad. This is some of what came out after soaking. Any ideas on what to use to clean out this tank.
    Tried Oxi Clean from some searches on other forums. Still have some left.
    What ever this stuff is, it is all over the tank walls like a coating.IMG_4216.jpg
    Last edited by 45vtwin; 04-16-2019 at 12:17 AM.

  5. #5
    Senior Member Cooter's Avatar
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    Sometimes when a tank is that bad, you'll have to resort to cleaners and a physical scrubbing with the ol' gravel/marbles trick. It will be very hard to do, even if you strip the frame/tank from the bike.

    Same problem if you decide to coat the inside, you'll need to turn it over and over for about 2 hours...

    IMO, I'd get it as clean as you can, and plan on changing the fuel filter regularly for awhile. Chickenstripen just made a puller tool for the job

  6. #6
    Senior Member lunaticfringe's Avatar
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    This is a very unfortunate situation and though i'm not there to view the inside of your frame/tank or "sniff and feel" what the substance is on that rag, it appears to be an organic mold of some type much the same as occurs in heating oil and diesel tanks left to sit unused for substantial periods of time. have NEVER seen this in a gasoline tank but anything is possible. SEE BELOW LINK for your perusal. this is what's happening with YOUR tank. great info on how to resolve this mess. best info i've seen.
    and after you've cleaned up this mess then strongly suggest you do the following:
    1-your pump is garbage. i realize you stated that you have all the parts to rebuild it but i'm around these pumps most every day and yours is junk.
    2-once you have the tank as clean as you can get it...take a hack-saw and cut the guts off your junk pump very close to the base of the pump. the base is where the 2 large O-rings reside. you're doing this to use what's left of the pump as a "cap". put a simple hose or rubber cap over the outlet. the outlet is the port with the 2 tiny O-rings on it that the fuel line attaches to.
    3-put some grease or oil on the base O-rings, install the pump base in the frame, tighten it, put a gallon or 2 of AV-gas or acetone in the tank as a cleansing liquid. be creative! make some "swabs" out of coat hanger or similar wire and clean rags and keep swabbing out tank best you can. when you think you have it as clean as possible discard everything....remove drain plug from pump...drain out any remaining swill....remove pump base and discard....swab out again thru pump port in frame.
    4-i'll sell you a new-in-box factory pump to get you going if that helps. they ain't cheap but they're close to $100 below original dealer list. i found 26 NEW pumps thru my factory contacts and bought them all but they're selling fast......so........

    here.....https://www.fordbarn.com/forum/showthread.php?t=8134
    Last edited by lunaticfringe; 04-16-2019 at 01:24 PM.

  7. #7
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    Not to hi-jack. Would it be a good idea to use ethanol free gas in a bike that runs once a month?

  8. #8
    Senior Member lunaticfringe's Avatar
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    Quote Originally Posted by outthere View Post
    Not to hi-jack. Would it be a good idea to use ethanol free gas in a bike that runs once a month?
    mike: sort of...yes.
    i own 25-30 motorcycles during any given month. ten are licensed and insured....5 of those 10 are ridden regularly....the other 5 each ridden perhaps 3X a year max. of the 5 or so NOT regularly ridden i run a 50/50 mix of AV-gas and 87 octane ethanol-free gasoline. the AV i purchase at little airport down the road....the ethanol free available everywhere here in Amish Land. in 30 plus years of doing this i've never ever had a carb gum up or jets clog...never an injector problem...never an EFI system or pump failure....never a pump filter clog or disintegrate. it IS what works for me.

  9. #9
    Senior Member BuellyBagger's Avatar
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    Just gonna throw this out there, maybe some industrial grade paint gun cleaner in the tank to clean that gunk out?

  10. #10
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    I'll check to see if my local gas guy's ethanol free gas is 91 octane. I doubt it. A fuel stabilizer might work just as well.



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