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  #21  
Old 05-24-2011, 09:45 PM
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JimN JimN is offline
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Quote:
Originally Posted by woobiedmd View Post
Jim- I must have to forget to top off the tank befrore I winterized it. I just put 17 gallons of 93 Octane in it and I'm running it now in the driveway at 1200RPM. I still see gas pouring down the back 2 barrels. How long should I let it run and should I periodically run it up to 2K? Ialso put in some gumout carb/injector cleaner(even though it doesn't have fuel injectors) in the tank. Your thoughts?
Sounds like it needs some carb work.
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  #22  
Old 05-24-2011, 11:55 PM
hoosier skier hoosier skier is offline
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Boat: mastercraft prostar 190 1998
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Had the same problem with my old Supra , the float on the carb was sticking . Water was in the fuel causing corrosion in the float chamber and the difference in specific gravity causes the float to ride higher . Flush the fuel tank with fresh gas and install a fuel separator with a bleed port to drain the water. Ethanol in todays fuel absorbs moisture at a high rate .
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  #23  
Old 05-25-2011, 11:37 AM
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woobiedmd woobiedmd is offline
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Boat: mastercraft PS190 1988 351
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I have a filter/separator. Changed the filter last year. I took the back bowl off and adjusted the float. I will try it out tonite.
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  #24  
Old 05-25-2011, 12:16 PM
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WilliM1940 WilliM1940 is offline
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It sound like the needle valve is being held open either by junk or damage, or your float has sunk, if you know you never had this problem before. If it isn't junk in the needle try lowering the float, but it may be easier if the float is changing bouyancy to just replace it with a new one. Frankly it is overhaul time.
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  #25  
Old 05-25-2011, 12:21 PM
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woobiedmd woobiedmd is offline
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Sounds on target. Could I just back out the needle all the way and blow it out? I have the rebuild kit but it looks a little scary.
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  #26  
Old 05-25-2011, 12:33 PM
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oxberger oxberger is offline
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The rebuild may look intimidating, but it's not bad, just keep track of your steps and the parts you removed and replaced. I've done it twice and if I can do it anyone can. Good luck and let us know how it turns out.
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  #27  
Old 05-25-2011, 04:20 PM
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thatsmrmastercraft thatsmrmastercraft is online now
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Quote:
Originally Posted by woobiedmd View Post
Sounds on target. Could I just back out the needle all the way and blow it out? I have the rebuild kit but it looks a little scary.
Pull the bowl one more time and remove the float and look at the needle and seat for an obstruction.
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  #28  
Old 05-25-2011, 07:55 PM
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I just did it and no luck! Lots of gas pouring into the back 2 barrels. I put a call into national carburators for a rebuild for less than $300. It won't get here until next week so no boating for me this weekend.
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  #29  
Old 05-26-2011, 02:12 AM
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thatsmrmastercraft thatsmrmastercraft is online now
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If gas continues to pour into your carb at idle, either your float is sunk or way out of adjustment or there is a problem with the needle and seat not sealing. Not too late to pick up a float and needle and seat locally and try to save the weekend. Are you sure the float level is set correctly?
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  #30  
Old 05-26-2011, 09:50 AM
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woobiedmd woobiedmd is offline
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I believe so. I spoke to Vince at Skidim, he told me to remove the bowl, turn it upside down and make the float parallel to the bottom. What I did notice was the cardboard gasket was dissolving/crumbling like wet paper. I believe it got sucked in/clogged something. I ordered a rebuilt Holley from National Carb for $230.00. It won't get here until next week but I feel confident that that will make the difference.Tell me about gas in the oil.
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