Philip Welsch Posted October 12, 2019 Report Share Posted October 12, 2019 Fuel draining from airbox drain tube with fuel selector on - engine off. No fuel in carb trays. Floats do not appear stuck. Any suggestions? Quote Link to comment Share on other sites More sharing options...
sandpiper Posted October 12, 2019 Report Share Posted October 12, 2019 I would think it's gotta be the floats. Did you remove the carbs and double check? Otherwise, how would it get past the carbs? Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted October 12, 2019 Report Share Posted October 12, 2019 The only way for fuel to get into the airbox is for the fuel to leak past the needle and seat. Quote Link to comment Share on other sites More sharing options...
Philip Welsch Posted October 13, 2019 Author Report Share Posted October 13, 2019 Replaced floats. Leakage stopped. Two of the removed floats weighed more than 7 grams (7.13 and 7.07). One of these was on each side. These floats weighed 6.5 and 6.6 grams in January. A fuel pressure reduction issue I've had for several months during full power climb (normal flow) apparently also went away. Test flight revealed normal pressure and flow, normal rpm and no roughness. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted October 13, 2019 Report Share Posted October 13, 2019 Just to be clear the 7 gram weight is for the pair of floats in each carburator, not per each float. Quote Link to comment Share on other sites More sharing options...
Philip Welsch Posted October 13, 2019 Author Report Share Posted October 13, 2019 Interesting. My replacement floats from Lockwood (p/n 861188) weighed new 6.58, 6.57, 6.51 and 6.55 grams each out of the box. Quote Link to comment Share on other sites More sharing options...
Tom Baker Posted October 13, 2019 Report Share Posted October 13, 2019 I just installed a set in a 914 last week. The current part number is 861-189. The sets were 6.40 and 6.44. The sets I was replacing were around 8 grams for the pairs. At the weights you posted I would expect you to have issues. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.