914 Turbo
in 912 / 914 Technical Questions
5 years ago
I have a 914 in a gyrocopter. Engine runs fine up to 35" manifold pressure, as I go to 40"engine surges badly.
When I take it back to 35" it runs perfect.Have checked carbs. all seem good.
Three way valve has been checked and in good working condition.When I unplug electrical connection from three way valve, engine runs good at 40" manifold pressure.Surging starts the moment the three way valve opens above 35" manifold pressure.
When I take it back to 35" it runs perfect.Have checked carbs. all seem good.
Three way valve has been checked and in good working condition.When I unplug electrical connection from three way valve, engine runs good at 40" manifold pressure.Surging starts the moment the three way valve opens above 35" manifold pressure.
