Minor Trouble Shooting Procedures - Chevrolet 1965 CORVAIR Owner's Manual

MINOR TROUBLE SHOOTING PROCEDURES
The chart on the previous page, and the information on the pages
which follow, contains information designed to aid the average
driver to discover, and possibly correct, conditions resulting in minor
mechanical difficulties in his cor. The chart, designed to point out
possible solutions to severol of the most common automotive mal-
functions and point out a logical checking sequence, will lead step
by step to the most likely causes and corrective procedures. If, after
making the checks and adjustments suggested, the source of the
trouble has not been found and corrected, it is strongly recom.
mended that on Authorized Chevrolet Dealer inspect the vehicle and
make whatever repairs or adjustments are necessary.
FUEL SYSTEM AND ENGINE
If the ignition switch will couse the engine to "turn over" or
"cronk" but the cor will not start, check Steps A through D below.
NOTE: If continual "flooding" of the carburetor is evidenced by a
carburetor wet with fuel or black exhaust smoke, perform the
operation suggested in paragraph D only.
(A) The first and most obvious,
and one of the most frequently
overlooked, items to check when
you have difficulty in starting your
cor is the amount of fuel in the
tonk. 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.
(8) If the fuel tank is not empty,
Checking Fuel Flow
48
you may check further to see whether the fuel is reaching the
engine. Disconnect the fuel lines at the carburetor. Place a jar or
CliP
under open line and briefly "crank" the engine by means of the
starter.
If fuel spurts from the line, you may assume that the FUEL
LINES are dear and the FUEL PUMP is operating properly. If no fuel
leaves the line, either the fuel lines or fuel pump are at fault. See
your Authorized Chevrolet Dealer.
(C)
Before reconnecting the fuel lines to the carburetor, remove
the FUEL FILTER from carburetor inlet and check its condition.
If it appears to be clean, replace it .and reconnect the fuel lines. If
the filter appears to be plugged, clean it as well as possible by
scraping out the foreign material and cleaning in a solvent. Then
r~install
the filter and repeat the procedure with the second carbu-
r~ior.
Replace the filters with new ones as soon as possible.
(0) If the fuel seems to be reaching the carburetors properly, the
problem may be: an EMPTY CARBURETOR BOWL caused by a
"stuck shut" float valve or a FLOODED CARBURETOR caused by a
"stuck open" condition and evidenced by gasoline flowing down
the outside of the carburetor; or a stuck CHOKE valve. Remove the
air cleaners from the carburetors. Check that the choke valves move
freely and are not stuck. Tap the side of the carburetors sharply
several times with a light tool such as a screwdriver handle or pliers.
Replace the air cleaners and attempt to start the engine in the
normal manner.
(E) If the car will start but stalls when hot or has a rough idle,
you can suspect a faulty IDLE ADJUSTMENT, or extremely dirty