Your help is needed.
I have an RV-12 S-LSA that is used in flight training.
When the 5 year hose replacement was needed it was performed by the FBO's A&P / Rotax Certified mechanic.
After the 5 year hose replacement a very small coolant leak has developed.
Coolant ONLY leaks after the engine has been run and is cooling down to the balmy WI winter temperatures.
Coolant does not leak when the engine is running.
Coolant does not leak statically.
Coolant does not leak when the cooling system is pressurized.
Coolant only leaks after the plane has been run and sits.
There are 2 small areas of coolant on the ground, both on the airplanes left side. The first leak is directly under the trailing edge of the fixed "cowl" flap. The second accumulation of coolant is directly under the leading edge of the left boarding step.
The forward puddle is about the size of a quarter. The aft puddle about the size of a silver dollar.
In the meanwhile anyone have any ideas or a similar problem?
I should add that I am not a great believer in coincidence. If the engine did not leak before the 5 year hose replacement but leaks after it, the common denominator is obvious, however, we can't see where the leak originates.
All suggestions appreciated.
1) American Airlines Captain & Check Airman
2) USAF Lieutenant Colonel w/ Command Pilot Rating
3) Police Officer
1) ATP / CFII Airplane Single and Multi-Engine
2) Adjunct Professor of Aviation Science, Carroll University, Waukesha, WI
RV-12 Transition Training, Rental & Instruction.
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