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NO Visible Exhaust Smoke
Insufficient
Fuel to Engine
Check
Fuel Level
Air IN
Fuel
System
Check
Safety Shutdowns
And
Fuel Solenoid
ENGINE RUNS
ROUGH or SLOW
Replace
Fuel Filter
Check
Fuel
PUMP
9
Excessive Exhaust Smoke
BLUE
Excessive Oil Level
BLACK
Dirty Air Filter
Engine Overheated
Engine Over Loaded
Clogged Muffler
Over Fueling Injector
HIGH ALTITUDE
Glow Plug
Not Activating
Check
With 12 volt DC
Test Light
GRAY/WHITE
Engine Cold
Incomplete
Combustion
Over-fueling
Injector
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