TROUBLE SHOOTING WHEN THE ENGINE FAILS TO START
Four key points
For
quick, reliable starting, the following four conditions are required.
(1.) Good compression. (2.) Adequate "glow" at glowplug. (3.) Correct mixture.
(4) Sufficient electric starter rotating speed.
If the engine fails to start, or does not keep running after being started, check symptoms against the
following chart and take necessary corrective action.
Note: The most common causes of trouble are marked with three asterisks, the less common problems
with one or two asterisks.
Sluggish
rotation
......
Recharge the
electric
starter battery.
Glowplug
battery
......
Recharge
lead-acid
cell
or
replace
dry
battery.
(Note:
An
unused,
or
almost
discharged, unused, dry battery may sometimes be of insufficient capacity if it is "old
stock".)
Glowplug element Is • • • • • Replace glowplug. Check that applied voltage Is not too high.
burned out
Something wrong with . . • • Check glowplug heating using other leads
battery leads.
Engine "flooded" due to • • • • Close needle-valve fully and remove glowplug, then Hip propeller to pump
excessive priming, out excess fuel. (Invert engine, if possible, white pumping out excess). Re-
start engine. (Priming is not necessary at this lime.)
Insufficient priming. ..... Repeat priming procedure referring to Priming.
32
Engine falls
to fire.
Cause
Corrective action
Symptom
Factor
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