Evolution Engines 62GXI - Manual (Page 13)

13
If the Engine Does Not Start
• Check and use a new spark plug if needed.
Check by removing the spark plug from
the cylinder. Remove the spark plug and
resinstall it into the ignition plug cap. With
the engine power system ON, move the
sensor magnet past the sensor quickly (by
flipping prop or manually moving the sensor
past the magnet). You should be able to
either see or hear the clicking of the spark
plug firing. The engine RPM needs to exceed
180 RPM before the ignition system will fire
the spark plug. Make sure to rapidly move
the magnet past the sensor when checking
for proper operation.
• Check fuel lines for damage or kinks. If any
of the lines are restricted, the fuel system
will likely not operate. Clean and intact lines
are essential for the EFI system to operate
properly.
• Check for proper mechanical function by
turning the engine over.
• Check that the throttle body is correctly
installed and that all gaskets between
the EFI unit and engine are intact and
undamaged.
• With the engine power system ON, move the
ignition sensor past the magnet (as outlined
above) and listen for the EFI unit to click. If
you do not hear a clicking (the spark plug
not firing) coming from the EFI unit, charge
your engine power system battery.
• Check that the vent line is attached and free
from any bends or blockages.
If the engine runs erratic
• Check for fuel systems problems. Are there
any holes in the fuel lines (inluding the
clunk line inside the fuel tank) or other
possible sources of air leaks?
• Ensure the spark system is working properly
and the engine power system battery is
charged.
Mechanical faults
If the engine cannot be turned over easily:
• The most likely cause is the engine is
flooded and by turning the engine over you
are trying to compress the fuel, not air.
1. Remove the spark plug.
2. Cover the cylinder head with a cloth or
paper towel and turn the propeller over
to expel all the excess fuel.
3. Replace the spark plug and try starting
again.
• A possible cause is the piston in the cylinder
is seized: loosen and unscrew the muffler
bolts. Visually inspect the piston and
cylinder through the exhaust port. If there
are excessive/deep scratches or grooves in
the piston, please contact Horizon Hobby
Customer Support for more information.
Repair of a seized piston/cylinder is
mechanical and should not be attempted.
Mechanical repairs must ALWAYS be completed
by an authorized Horizon Hobby service center.
Maintenance
After each flying session, fully drain the fuel
from the tank.
If you need additional help or have any
questions, please call Horizon’s Support
Team. Horizon has trained technicians who are
qualified to answer your engine questions.
Troubleshooting Guide