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  1. #1
    Cadet
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    Default how to get the old gas out?

    Recently purchased a 1988 Starcraft SS160
    The boat hadn't been used in a couple years and had almost a full tank.

    I'm sure the gas is no good and wanted to get it out of there, but can't quite figure out how to.

    I tried several attempts at siphoning it out, but despite using about a 5-6 foot hose and pump, I could not get it to pull the gas out.

    I know there is gas in it, cause the gauge reads almost full AND I ran it for about 15 minutes(40 Yamaha ELG)

    Second question....
    ANyone know about how big the tank might be on this baby?

    Thx in advance

  2. #2
    Moderator Bondo's Avatar
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    Default Re: how to get the old gas out?

    Ayuh,... If ya can't pump it out the fuel line, ya might as well just Pull the tank...
    Sounds like it's Full of Crud...

    I use an electric fuel tranfer pump...
    Any Grease is Better,..... Than No Grease at All.......

  3. #3
    Commander MTboatguy's Avatar
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    Default Re: how to get the old gas out?

    Smoke in the left side of your mouth, beer in the right hand and a 1/2 inch siphon line, draw deep and get the heck out of the way!


  4. #4
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    Default Re: how to get the old gas out?

    A lot of boats have a removeable panel over the fuel tank. Remove it and it should expose a 4" diameter plate that bolts the gauge sender into the tank. Remove the self-tapping screws and remove the plate. Now put a shake-shake siphon into the tank and siphon it out into some jerry cans. If the siphon hose is not long enough, you may have to extend it. A 1/2" piece of copper pipe usually fits. I also stick a piece of pipe in the end of the siphon hose and stick it thru the garboard drain plug and siphon the fuel into jerry cans on the ground under the garboard plug.

  5. #5
    Chief Petty Officer Captain Caveman's Avatar
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    Default Re: how to get the old gas out?

    Quote Originally Posted by tmorriss View Post
    I'm sure the gas is no good and wanted to get it out of there
    I'm not trying to be a wise-guy, but how are you "sure" that the gas is no good? Gas can last many years in a tank depending on the gas quality, whether stabilizers were used, etc. I've seen an old car run on 20 year old gas with no problems. Now, your carburetor could be fouled or there could be other issues if the motor isn't running right. Before you toss old gas for no reason, you should make sure that it's the problem. I hate to see an entire tank of gas wasted if not necessary.

  6. #6
    Petty Officer 1st Class
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    Default Re: how to get the old gas out?

    I'd just rather not have the bad gas running thru my engine and filters, nothing good can come of that. Better to get the old gas out (whether it's bad or not) and start with new stuff. Buy the cheapest electric auto fuel pump you can find and get all the gas and crap outta that tank.

  7. #7
    Petty Officer 1st Class
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    Default Re: how to get the old gas out?

    so the boat was running fine for 15 mins on this "bad" gas?

    Anyways, I was able to use this hand pump from HF to pump out 10 gallons of gas from my boat no problem. I just connect it to the nipple where my primer bulb is connected to.
    http://www.harborfreight.com/multi-u...ump-66418.html

  8. #8
    Seaman
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    Default Re: how to get the old gas out?

    Old fuel will go bad. Really old fuel will turn into "varnish". This varnish will coat the inside of your carburetor and fuel lines. It can also coat the inside of your fuel tank.
    Suck it out! use it somewhere else.....mower etc...

  9. #9
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    Default Re: how to get the old gas out?

    Did you get the gas out? I have a 1989 ss 160 and am in the same situation. Do you have an idea how many gallons the tank holds? Also how did you get the gas out...?
    Thanks

  10. #10
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    Default Re: how to get the old gas out?

    I'm sure this is way too late.... Sorry. Once I got it resolved, I've been fishing
    Anyway, I did get it.
    My tank is about 11.5 gallons(stainless steel)

    Getting it out was NOT fun.
    I bought two hand pumps, both of which were crap.

    I finally gave up, took my air compressor and about 20 feet of clear 1/2 inch tubing.
    Pulled the top off the tank took out the gauge, shoved one end of the tubing in the tank and the other end fished out
    through the drain hole in the back.

    Then I took my compressor and held the air gun at about 45 deg. angle across the tubing and ran all the air I could across it.
    It created a vacuum and once the case started flowing out, I just put the hose into 5 gallon cans

  11. #11
    Supreme Mariner
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    Default Re: how to get the old gas out?

    That is pretty inventive, and is safe too. Good job.

    A shake-shake siphon would have worked as well.

  12. #12
    Petty Officer 1st Class Lakes84's Avatar
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    Default Re: how to get the old gas out?

    Quote Originally Posted by Captain Caveman View Post
    I'm not trying to be a wise-guy, but how are you "sure" that the gas is no good? Gas can last many years in a tank depending on the gas quality, whether stabilizers were used, etc. I've seen an old car run on 20 year old gas with no problems. Now, your carburetor could be fouled or there could be other issues if the motor isn't running right. Before you toss old gas for no reason, you should make sure that it's the problem. I hate to see an entire tank of gas wasted if not necessary.
    I'm glad you got the problem solved. However...I agree with CC. I left gas in my generator for 5 years and it still ran good. It did have SeaFoam in it though.

    If your carb is gummed up all you need is about 1/4 cup of SF pored in on the intake side of the carb (while running) just till it kills the motor. Leave it for 15-30 mins and go start your engine again. It will smoke like a dickens...worse than fogging oil, but man does it clean things up good. You then should have no problems running some old gas through it...especially if you put some SF in it to begin with.

    I know some may disagree, but that stuff has worked miracles for me. Opinions will vary though =) Joe

  13. #13
    Commander RogersJetboat454's Avatar
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    Default Re: how to get the old gas out?

    Quote Originally Posted by Lakes84 View Post
    I'm glad you got the problem solved. However...I agree with CC. I left gas in my generator for 5 years and it still ran good. It did have SeaFoam in it though.
    But... you don't use your generator to provide propulsion for your boat potentially in open water. If your generator stalls, your lights go out. If his engine stalls, he may be up ships creek with a measly paddle.... Better safe than stranded IMHO.

    If your carb is gummed up all you need is about 1/4 cup of SF pored in on the intake side of the carb (while running) just till it kills the motor. Leave it for 15-30 mins and go start your engine again. It will smoke like a dickens...worse than fogging oil, but man does it clean things up good.
    Fogging the engine with Sea Foam isn't going to clean the float bows, passages, and jet's of a carb. All you're accomplishing by fogging it is cleaning the carb venturis and decarbing the cylinders.
    1976 Rogers Custom Boats 18' "Bonneville" W/ Chevy 454/ Berkeley 12JC

    Care Taker of 1976 Glastron V-184 Crestflight W/ Volvo 170B/280 I.O.
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  14. #14
    Petty Officer 1st Class Lakes84's Avatar
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    Default Re: how to get the old gas out?

    Not going to argue...BUT, Like I said, this is my experience and I bet a ton of others have the same experience. I'm not
    here to prove I'm right and every body else is wrong. If that's what people are on this forum for, they're misusing it.
    I'm just passing on my POV and experiences like everyone else....

    BTW: For the sake of a good discussion...Do you have proof it doesn't clean the bowl or jets? Sea Foam liquifies petroleum varnish
    and those are parts of the fuel sytsem...so why wouldn't it clean it?

    Granted, fogging might not accomplish that right away, but leaving it in your carb for a length of time should clean it, just like running
    it continuously in your gas.

    There is plenty of proof out there this stuff does clean those items. Is there any that says it doesn't?

    Joe

  15. #15
    Chief Petty Officer mpdive's Avatar
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    Default Re: how to get the old gas out?

    How would it clean the bowl when it is never introduced to the bowl? Your pouring it down the venturi only and it will only clean the outside surfaces of the venturi. It has nothing to do with the interior mechanical parts of the carb. Also pouring it down the carb cleans the intake and carbon deposits in the combustion chamber. Has nothing to do with the carb.
    Sometimes it's more important to be human, than to have good taste. ~Brecht

  16. #16
    Petty Officer 1st Class Lakes84's Avatar
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    Default Re: how to get the old gas out?

    Correct....But if it's in your gas, it will touch every part of the engine that the gas does, so shouldn't it clean it "all" if in your gas?
    I get the fogging part

  17. #17
    Commander RogersJetboat454's Avatar
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    Default Re: how to get the old gas out?

    Quote Originally Posted by Lakes84 View Post
    Correct....But if it's in your gas, it will touch every part of the engine that the gas does, so shouldn't it clean it "all" if in your gas?
    Every part of the engine that the gas can reach. Jets and passages clogged with varnish aren't going to be passing much of anything, and all the while your engine is running lean.

    Expecting 8 ounces of hail-Mary in a can to convert stale varnished fuel into fresh fuel with all the benefits of a proper carb rebuild, means your expectations of this stuff are allot higher than mine.
    1976 Rogers Custom Boats 18' "Bonneville" W/ Chevy 454/ Berkeley 12JC

    Care Taker of 1976 Glastron V-184 Crestflight W/ Volvo 170B/280 I.O.
    & 1969 Starcraft W/ 1956 Evinrude 7.5hp Fleetwin.

  18. #18
    Vice Admiral tpenfield's Avatar
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    Default Re: how to get the old gas out?

    I had the opportunity to buy a boat that was full of 2 year old gas . . . 96 gallons, give or take.

    . . . no thanks.
    Best regards,
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  19. #19
    Petty Officer 2nd Class Lakemeadan's Avatar
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    Default Re: how to get the old gas out?

    When fuel goes bad it smells like varnish also. That 2 year old fuel might be ok. But starting off with fresh fuel is the way to go. If it runs good now, you good to go. If not, rebuild the carb. Than use fuel additives for preventive maintenance.
    99 SEARAY 185, 4.3L - 'Piranha'

  20. #20
    Petty Officer 2nd Class Lakemeadan's Avatar
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    Default Re: how to get the old gas out?

    Quote Originally Posted by tpenfield View Post
    I had the opportunity to buy a boat that was full of 2 year old gas . . . 96 gallons, give or take.

    . . . no thanks.
    So did you buy the gas instead? lol
    99 SEARAY 185, 4.3L - 'Piranha'

  21. #21
    Petty Officer 1st Class Lakes84's Avatar
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    Default Re: how to get the old gas out?

    Well, I'm 45 and have been using it for years. I used to be accustomed to breaking my carb down in my old Merc and cleaning the high speed jets. I started using SF (yes a hail mary in a can) and when I would disassemble my carb to clean, it was clean as a whistle. When I went to rebuild that same carb ( I was a big motorhead in my younger days) That carb was so clean it didn't need a rebuild. (just one of many examples)

    So, It's been my experience that the biggest disbelievers in that product and the biggest public skeptics of.... well just about anything are the ones who have either...A...never experienced, or B...never attempted to experience the product they are speaking of.

    ETA: HERE is a great thread on another forum I belong to that is all fisherman with boats big and small like us. Read for your self the overwhelming experience of Sea Foam by these guys.

  22. #22
    Chief Petty Officer mpdive's Avatar
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    Default Re: how to get the old gas out?

    Quote Originally Posted by Lakes84 View Post
    Welll. I'm 45 and have been using it for years. I used to be accustomed to breaking my carb down in my old Merc and cleaning the high speed jets. I started using SF (yes a hail mary in a can) and when I would disassemble my carb to clean, it was clean as a whistle. When I went to rebuild that same carb ( I was a big motorhead in my younger days) That carb was so clean it didn't need a rebuild. (just one of many examples)

    So, It's been my experience that the biggest disbelievers in that product and the biggest public skeptics of.... well just about anything are the ones who have either...A...never experienced, or B...never attempted to experience the product they are speaking of.

    ETA: HERE is a great thread on another forum I belong to that is all fisherman with boats big and small like us. Read for your self the overwhelming experience of Sea Foam by these guys.
    I won't disagree with that. In your fuel as a maintenance tool, yes it does a good job cleaning the carb.. However, too much varnish being disolved and forced to push itself through small passages and jet's could very well leave you with more of a problem than you started with. But, yes I do agree it's a good product and does what it says it will. It's just a judgement call on how much buildup there is. I use it myself.
    Sometimes it's more important to be human, than to have good taste. ~Brecht

  23. #23
    Petty Officer 1st Class Lakes84's Avatar
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    Default Re: how to get the old gas out?

    You can pass go and you can collect 200 dollars...Great explanation.

  24. #24
    Chief Petty Officer mpdive's Avatar
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    Default Re: how to get the old gas out?

    Quote Originally Posted by Lakes84 View Post
    You can pass go and you can collect 200 dollars...Great explanation.
    I was hoping for a cold six pack
    Sometimes it's more important to be human, than to have good taste. ~Brecht

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