Paul M. Anton wrote: > > Thanks one and all for your suggestions and comments on my > "gush > I had assumed that the fuel loss from the header tank while > parked was due to a leaky needle valve in the carburetor. > (I have the Stromberg) and that it wasn't worth the bother to > fix it. I simply shut the header valve off each time I park the > plane. >
To my knowledge there is no LEGAL fix for the leaky Stromberg needle and seat condition. The needle and seats that didn't leak are no longer legal. <g> I too, shut off the header valve off each time or drip fuel on the nose wheel tire that likes to swell up from such a fuel drip. My Coupe is a 415C with a return line going to the right wing tank. There is NO means to control fuel from draining back from the TOP of the HEADER TANK and there would be no need unless you parked SEVERELY UPHILL with FULL tanks. > Comments on this would be appreciated. Is my fuel loss through > a faulty needle valve or just drain back to the wing tanks. > If it does drain back the into the wing tanks, what is the path? > If your lines are like mine, loss is thru the carb needle valve, since there is no path back to the wing tank. What can mask this obvious problem is... a NOT SO OBVIOUS LEAKING header tank HEADER SHUTOFF VALVE. In my previous post I mentioned that this valve needs FUEL VALVE GREASE to be leak free! If you are dripping fuel out of the carb with the header valve in the off position... grease the valve. > Is the leakage through the carb worth bothering about? Is it worth > my while to look for the "other" brand carburetor and get rid of the > Stromberg? From comments I have read here, the Marvel seems to be > the preferred carburetor. Is replacement a simple bolt on operation, > or does shrouding, carb heat ducts, etc have to be changed? > No and no. Marvel would be the perfect carb.... if it had no recurring AD's according to my AI. His advice is to save the money and stick with the Stromberg. Bob Urban
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