Engine pops but will not start:
Compression too high
Add glow plug washers.
Glow plug bad
Remove glow plug and test. Try different plug.
Fuel mixture too lean
Open needle valve ½ turn.
Glow plug coil touching
glow plug body
Pull coil lightly away from plug body with hobby
knife (SpiraLite Speed plug only).
Carburetor clogged
Remove needle valve and fuel line. Back-flush
needle valve body with fuel. Reassemble needle
valve and fuel line.
Bad/old fuel
Buy new fuel, change brands (fuel must contain
castor oil).
Electric starter too slow
Try Lite Machines high-speed micro starter.
Check charge of starter battery.
Electric starter holding
back engine
Remove starter from engine when engine starts
popping
Engine pops, fuel sizzles, fuel drips out of carburetor:
Engine flooded (too much
fuel)
Close needle valve and try starting engine to
burn-off excess fuel. Open needle valve and try
starting engine again. Some fuel dripping from
carburetor is normal when fuel tank is full and
the oil provides lubrication for the goop clutch.
Engine runs rough (four strokes), sputters and dies:
Mixture too rich
Close needle valve ½ turn.
Engine runs at high speed for a few seconds then stops:
Fuel line not filled with
fuel
Hold finger over carburetor inlet and spin engine
to pull fuel into carburetor.
Needle valve not adjusted
correctly
Close needle valve completely then open 2 to
2-1/2 turns.
Carburetor clogged
Remove needle valve and fuel line. Back-flush
needle valve body with fuel. Reassemble needle
valve and fuel line.
Op er a tor's Guide
Trouble-Shooting Glow Engines
9-2
LITE MA CHINES
