Better still is to blow compressed air through all hoses after making them up & before fitting. It makes sure there is no loose foreign stuff inside.
Bob On Wed, Mar 20, 2013 at 9:23 AM, Ian Mc Phee <[email protected]> wrote: > I am a bit embarrassed to report this but it is worth passing on to > motorglider owners. Although it is Falke with Jabiru it could happen with > any glider. > > We have had an issue with either running real rich on take off (you could > see black smoke and fuel flow jumped to 38 lit/hr) and then it may loose > full power and usually land ahead OR if airborne at 75% all was well > Clearly it was a full power issue but take off on lower power no problem. > > Carb (BING) removed and checked, Airfilter was K&N and changed, outside > pressure air to carb removed. fuel flow electric and mechanical checked. > After calls to Don at Jabiru so again back to Jabiru AND looked between > full power jet and cruise jet and finally a tiny bit of curly piece of > stuff was there but how did it get there as we have all new hoses and > gascolator. Finally after 3 weeks of working we worked out it was a tiny > bit of fire sleeving inner white insulation and must have happened 5 years > ago when it was all put together and the hose was pushed through the fire > sleeving. The fire sleeving was orange US stuff from Aircraft Spruce not > the grey from Germany.. > > *Lesson ALWAYS when pushing fuel hose through fire sleeving with a piece > of tape over fuel hose*. > > I should explain Jabiru has one BING carb and I recon I have read how they > work about 5 times and understand it all. It would appear this piece would > rise and get under top needle and then later on would finally drop down. > My LAME friend always seals the end of fire sleeving with orange silastic > but this would not solve my problem. > > Hope nobody else gets caught. > > Ian McPhee > > >
