![]() ![]() ![]() Water condenses on the surface of your engine, seats, deck, can of Coors etc, because the item is cold soaked and there's a fair amount of moisture in the the ambient air. but this is a common misconception about the mechanism of condensation. Thank you all and have a wonderful winter. But this Sunday, back on the water for Minnesota fall colors on the lake. So, I will toss in new spark plugs next season and see if all is well. Carb guy says it's the best way to plug a carb and or injectors. Oh, I do shoot a little fog into the carb as it is briefly started to put a little bit of protection on the cylinder walls. It makes you trust the mix and it is not safe. I even shoot a little air into the block passages and hoses I disconnected. So, for the record, I drain ALL water as in the manual, change gear oil, engine oil and for sure briefly turn over engine to blow water from impeller and by the stat. As well, I have for five years loosened the four screws to the float bowl, (holley carb) so as to drain out the gas in the carb. He said if anything, put in Marvel Mystery Oil as recommended in the tank all the time and for sure when storing off season. He stands by NOT filling the tank and NOT using stablizer. I know they aren't boats, but a carb is a carb. Ok, because I got so much great advice, I decided to spend a few minutes on the phone with a performance carb builder for race cars. Re: Syphoning gas from 1991 Four Winns 200 Horizon The BEST way to mitigate old fuel (loss of vapor pressure) is to dilute it with as much fresh fuel as practical. (Have you ever noticed the hissing sound when you remove the fuel cap on your car?) Boats do not have pressurized tanks (yet!!!!) the only way to prevent it is to pressurize the tank. The biggest problem with old fuel is the loss of the "higher-end" hydrocarbons due to evaporation. Otherwise for normal storage run out or drain out as much fuel as you can (1/4 or less tank), park the boat in FALL, and in Spring, just fill the tank, replace the filter and get it running with the new fresh fuel and go boating! #Audio hijack vs sound siphon full#I have actually let my boat sit for 2 full years with an empty tank without draining the carb, and just filled the tank, replaced the filter and had no problems getting it running once the fuel system was primed. If you're going to pickle the engine and leave it for more than a year or so, you should probably run the carb dry. Closing the valve at bottom of the siphon, you can fill the hose completely before starting the siphon (and not have to use your mouth!! )ĭO ALL THIS OUTSIDE away from the garage/house! and WITH PLENTY OF VENTILATION! Have a (Dry Chem/Halon) fire extinguisher handy.and of course, NO SMOKING! I use a length of hose long enough with a 1 or 2 ft long piece of plastic PVC pipe on the end to use as a vacuum "nozzle-end" to move around in the tank to get all the debris.Īt the fuel receptacle end of the hose (on the floor), I connect a 3/4" ball valve so the helper can close the valve to switch to an empty fuel receptacle without spilling or losing the siphon. Since most boats have a fitting at the tank for the fuel-fill hose, the sharp bends and fitting can frequently prevent you from being able to get a hose to the bottom of the tank to effectively siphon the fuel And you cannot move the hose around to the corners etc to get the other "stuff" in there (if present) I use a clear vinyl 3/4" hose (Home Depot or other hardware store) The only sure way to siphon fuel (and other contamination) out of your tank is to remove the gage sending unit and use a hose. There is no fuel snake oil that will prevent water from collecting in your fuel tank (see the article above for possible sources of fuel tank water) (never gotten it in an aircraft fuel tank either and THEY are far more exposed to temp swings than any marine fuel tank) AND I have never in all those years used Stabil or any other fuel "stabilizer" The Myth of Condensation in Fuel Tanks by David Pascoe: Boat Maintenance, Repairs and Troubleshooting and because I have actually studied physics and thermodynamics I understand his explanation.Īnd I have done exactly the same thing (left my tank either empty or 1/4 or less for more than 20 years and have NEVER gotten condensation. ![]()
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