914 wont go over 3000 RPM
in 912 / 914 Technical Questions
6 years ago
Last year we synced carbs on my buddies 914. Ran great. Month later was rattling the gearbox and missing. We found a sunk float and changed all four. He let the plane sit a while (7 months) and it ran ok a couple times now it just wont go over 3000 rpm. Idles smooth, vacuum at the intake manifolds is the same at idle (still need to check at WOT.) I own a 912 and am learning the differences between the 914 and the 912. Fuel pressure regulator to enrich under boost all makes sense. Im thinking the float bowl gaskets might be leaking and am going to use a smoke machine to pressurize the intake to 2 or three PSI and see if we get smoke coming out anywhere. Anyone have any tips or seen anything besides float bowl gaskets causing a symptom like this? It runs smooth, just wont go over 3000 RPM. Like the air filter has a massive restriction but we ran it with it off and makes no difference. The engine has 150 hours on it so it shouldn't be anything too stupid one would hope. Im of the mind to double check everything we touched and from what I have read the float bowl gaskets can cause a symptom like this.
Thanks for any input anyone has.
Thanks for any input anyone has.
