Fuel System - Chevrolet Impala 1969 Owner's Manual

The chart on the previous page, and the information on the pages
which follow, contains information designed to aid the average
driver to discover, Clnd possibly correct, conditions resulting in minor
mechanical difficulties in his car. The chart, designed to point out
possible solutions to several of the most common automotive mal-
functions and point out a logical checking sequence, will lead step
by step to the most likely co uses and corrective procedures. If, after
making the check.s and adjustments suggested, the source of the
trouble has not been found and corrected, it is strongly recommended
that on Authorized Chevrolet Dealer inspects the vehicle and make
whatever repairs or adjustments
are
necessory.'
FUEL SYSTEM AND ENGINE
If the ignition switch will cause
the
engine to "tum over" or
"crank" but the cor will not start,
check Steps A through D below.
NOTE: If Continual "flooding" 01 the carbur.tor is evidenc.d by a
carbur.tor wet with fuel or black exhaust smoke, perform the
operation suggested in paragraph_ D only.
(A) The tirst and most obvious.
and one of the most frequently
overlooked" items to check when
you have difficulty in starting your
caris the amount of fuel in the
tank. Make it a habit to check the
FUEL GAUGE regularly and most
especially at a time when the en-
gine will "turn over" but will not
start.
18) If the fuel tank is not empty.
you mey check further to see
Chedclll9 Fllel Flow
67
whether the fuel is reaching the carburetor. Disconnect the fuel line
at the carburetor -and remove the center wire from the coil tower.
Place a iar or cup under the open line and briefly "crank" the engine
by means of the starter.
If fuel spurts from ~he
fitting, you may assume
thet the FUel liNES ore dear and the FUEL PUMP is operating
properly. If no fuel leaves the line, either the fue' lines or fuel
pump are at fault. See your
Au ..
thorized Chevrolet Dealer.
(C)
Before reconnecting the fuel
line to the carburetor, remove the
FUEL FilTER: from the carburetor-
inlet and check its condition. If it
appears to be deem, replace 't
and reconnect the fuel line. Re~
place the filter if it appears to be
plugged.
(D)
If the fuel seems . to be
reaching the carburetor properly,
the problem may be: ,an EMPTY
Fw' Fnt.r
CARBURETOR: BOWL caused by a
'~stuck
shut" carburetor; a
flOODED CARBURETOR caused
b' > :
a "stuck open" condition and
evidenced by gas- a line flowing down. the outside of the carburetor;
or a stuck CHOKE valve. Remove the air cleaner from the carbu-
retor. Check that the choke valve moves freely and is not stuck.
(Don't mistake normal spring tension for a stuck valve.) Tap the
side of the carburetor' sharply several 'times with a light tool such
as a screwdriver handle or pliers. Replace the oir cleaner arid
attempt to start the engine in the normal manner.