Chevrolet 1963 Corvette, Руководство по ремонту и настройке, Страница: 303 / 346

282 TROUBLESHOOTING
Test and Procedure
Results and Indications
Proceed
to " • !
3.4—On point-type ignition systems,
connect a dwell-meter between
the distributor primary lead and
ground. Crank the engine and ob-
serve the point dwell angle. On
electronic ignition systems, con-
duct a stator (magnetic pickup as-
sembly) test. See Chapter 3.
On point-type systems, adjust the dwell angle
if necessary.
NOTE: Increasing the point gap
decreases the dwell angle and vice-versa.
If the dwell meter shows little or no reading;
On electronic ignition systems, if the stator is
bad, replace the 'stator. If the stator is good,
proceed to the other tests in Chapter 3.
3.6 3.5
INSUFFICIENT
DWELL
NARROW GAP
Dwell Is a function of point gap
3.5—On the point-type ignition systems,
check the condenser for short:
connect an ohmeter across the
condenser body and the pigtail
lead.
If any reading other than infinite is noted,
replace the condenser
3.6
Checking the condenser for short
3.6—Test the coil primary resistance:
On point-type ignition systems,
connect an ohmmeter across the
coil primary terminals, and read
the resistance on the low scale.
Note whether an external ballast
resistor or resistance wire is used.
On electronic ignition systems,
test the coil primary resistance
as in Chapter 3.
Point-type ignition coils utilizing ballast re-
sistors or resistance wires should have ap-
proximately 1.0 ohms resistance. Coils
with internal resistors should have approx-
imately 4.0 ohms resistance. If values far
from the above are noted, replace the coil.
4.1
Check the coll primary resistance
WIDE GAP
CLOSE
SMALL
DWELL
LARGE
DWELL