207WF Posted December 1, 2011 Report Share Posted December 1, 2011 My 2007 CTSW has always smelled of fuel, but now its getting much worse. At the last annual the carbs were rebuilt, the wings were pulled for inspection, the sight tubes replaced and the rubber hose that runs along the windscreen from the tank to the firewall was replaced. I have checked the fittings around the sight tubes and the rubber hose that goes to the firewall, stuffing long strips of rags down there, and after a several-hour flight they come out dry and don’t smell fuel laden. There is no sign of leaks at the firewall side of those hoses. I have checked the fuel filter behind the instrument panel – clean and dry. Roger Lee has tweaked the carb float levels and replaced the gaskets so the drip trays are now clean and dry. I still find a little fuel moisture around the air intake hose fitting at the back of one carb, but the air intake at the top of the cowl does not smell strongly of fuel. Today I confirmed that the fuel hose attachments to the carbs are tight. I can smell fuel in the cabin and even the baggage bay when I unwrap the bird after sitting with the gas shut off and the canopy cover on. I can smell fuel underneath the cowl on preflight, but see no drips. The smell is strongest right as I start the engine when the vent window is open. I am running out of ideas and inspiration. Anyone have any new ideas? Thanks, WF Link to comment Share on other sites More sharing options...
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