The EOS engine's standard setting is adjusted to rather a bit to rich run in order to have a
safe engine run. The main adjustment is made by the selection of a proper main jet
inserted into the carburetor. The low jet adjuster screw helping for a proper setting in low
and medium RPM's but not changing the combustion temperature and condition under
high and full RPM.
If the spark plug of your engine showing a far to rich or far to lean combustion;
check for proper fuel/oil mix
check your fuel lines and filter (no kink in fuel line, no leaking, no air coming into the
line system, no air bubbles, no dirt in filter blocking fuel flow)
check fuel tank vent (no vacuum)
check if spark plug type is the right one
check for correct setting of the low jet adjuster screw
original air box with original air inlet installed to engine (tight fit of collar)
choke not closed/activated (or partly closed)
If all above correct but still improper combustion, then there may be a general fail function
of the carburetor. Change membranes and gaskets and eventually main fuel jet. If still
improper combustion, consult with your dealer/Paramotor/aircraft manufacturer for
assistance (or EOS engine if the agent cannot help).
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