Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 448

a. Check for sufficient fuel to operate engine.
b. Carburetor flooded and/or fuel level in carburetor
bowl not correct.
c. Dirt and water in gas line or carburetor.
d. Sticking choke.
e. Faulty fuel pump.
f. Corroded or loose battery terminal connections and/
or weak battery.
g. Broken or loose ignition wires and/or faulty ignition
switch.
a. Check for air leaks between intake manifold and
head.
b. Check for blown head gasket.
c. Check for worn timing gears, chain or sprockets.
d. Check for worn camshaft lobes.
e. Check for overheated engine.
LIG H T T R U C K S ER V ICE M ANUAL
Fig. 6 A -3 -V IN Locations (MK IV V-8)
DIAGNOSIS
ENGINE FAILS TO ST A R T
cap.
ENGINE LOPES W H IL E IDLING
ENGI NE M E C H A N I C A L
h. Excessive moisture on plugs, caps or ignition system.
i. Damaged distributor rotor or cracked distributor
j. Fouled spark plugs and/or improper spark plug gap.
k. Weak or faulty coil.
1 . Faulty solenoid or starting motor,
m. Park or neutral switch inoperative.
f. Check for plugged crankcase vent valve.
g. Check for faulty fuel pump.
h. Check for leaky EGR valve.
6A-3