1
Pagp Dl
Test the atomisers af, recommended in Section S
and clean them if necessary.
The lubricating oil used should be of an approved
type. (See Appendix).
Sticking Rocker.
Ir tbe rockers stick the cause may be : tbe use
of unsuitable oil, sbortage of oil, or sludging.
Use only oil of an approved type. (Sec Appendix).
Ir tbere is a sbortage of lubricant, tbe passages and
pipes to tbe rockers sbould be cbecked.
DIFFICULT STARnNG
No Foei at Atomisers :-
(a) No fuel in tank.
(b) Fuel lift pump not working (Pressure red
system only).
Cc) Slack connections in tbe fuel system.
'(rl) Air in the fuel system (Trace from suction
side).
Go over the whole of tbe above and make sure
that the atomisers are fully primed and tbat the
.. pinging tt or ., squeaking tt noise is heard from
each atomiser when the engine is turned over by
hand.
Engine not being turned over quickly enough.
(Particularly in cold weather)
(a) Lubricating oil too thick. (Sec Appendix).
(b) Battery not fully charged. Fit fully charged
battery.
(c) Engine "gummy" due to standing in tbe
cold.
Use thc cold starting equipment (if fitted). (See
Section C).
Low Compression.
This may be due to dry cylinders and piston
rings, worn piston rings, worn cylinders, or leaky
valves.
Fuel Oll.
It is essential to use clean fuel Dil fret from
water, dirt, or sand. The recommended specifi-
cation for fuel Dil is given in Section S. Providing
clean fuel is used, no trouble should he experienced
witb the fuel system but dirty Dil willlead to trouble
due to choked filters, damaged fuel pump and
atomisers. If the engine tends to run weIl for a
short period and then to die away or stop altogether,
tbe fuel system should immediately be suspected.
Tbe trouble may be due to the lift pump not
working properly, to a loost pipe joint allowing air
to get into the fuel system, to a dirty fuel filter, or
to a choked fuel pipe. The pre-filter in the fuel
lift pump (when fitted) should be cleaned by
washing in clean fuel Dil, but tbe final filter should
not need attention more than once in 1,000 hours,
when a completely new filter element should he
fitted. If the conditions lead to dust or con-
tamination of the fuel, decrease tbe maintenance
interval.
Always, af ter disturbing fuel line washers.
replace with ncw washers to ensure the joints are
air tight.
Atomisers Faulty.
Test atomisers for ., ping" or "squeak" as
already mentioned. Ir any atomiser rails to give
this " pinging" or .. squeaking" noise when that
cylinder is pulled smartly over compression and it
bas been made certain that the atomiser is fully
primed, then the atomiser should he tested by
removing it from the cylinder head (See Section S).
Disconnect pipes on other atomisers while
making this test.
Air Cleaner.
In accordance with periodical attentions,
Section F, clean the filtering element in paraffin,
and. if of tbe oil bath type, dip in oil.
In those filters wbicb need it, new engine oiJ
should be poured into the base, up to tbe level
mark.
Sticking Valves.
Trouble witb sticking valves may be due to
overbeating, tbe result of cboked atomisers, or tbe
use of unsuitable lubricating oil.
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