Mazda 323 1988 Workshop Manual page 391

5
DISTRIBUTOR (NON-TURBO)
8. If the ignition timing is not within specification, loos-
en the distributor body installation bolts and ad-
just the ignition timing by turning the body.
9. Reconnect the vacuum hoses to the vacuum con-
trol and check the ignition timing.
_~~a'
ignition timlng: approx. 7* BTDC
IO. Reconnect the black connector.
c
m
g 20
s
: 10
-E
/
m 0
-10*2p
2,000 4,000 6,000
Engine speed (rpm)
SPARKADVANCECONTROL
Centrifugal
1. Warm up the engine to operating temperature.
2. Check that the idle speed and ignition timing are
correct.
3. Disconnect the vacuum hoses from the vacuum
control, and plug the ends of the hoses.
4. While gradually increasing the engine speed, use
a timing light to checks the advance angle on the
pulley.
Excess advance........ weak governor spring
(if the governor spring is
broken, the advance will
rise very high)
._
Insufficient advance governor weight or cam
malfunction
Vacuum
1, Warm up the engine to operating temperature.
2. Check that the idle speed and ignition timing are
correct.
3. Disconnect the vacuum hoses from the vacuum
control, and plug the ends of the hoses.
4. Run the engine at idle.
5. Attach a vacuum pump to the control (A, B) and
check by using the timing light while applying
vacuum.
5-32
323
Revised 10167