Operation – Equus 5568 - INNOVA Pro Digital Timing Light (DIS) User Manual
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Operation
8
5568
d.
With timing light directed at timing marks, press Cylinder/Advance Increment
switch as needed to realign timing marks to initial timing or as instructed by
manufacturer's specifications. Note degrees advance on LCD display and
compare with manufacturer's specifications.
e.
Turn off ignition and disconnect timing light from engine.
Vacuum Advance
•
Make sure timing light is properly connected as described in TIMING LIGHT
CONNECTION.
•
Make sure initial timing is correct. If necessary, prepare engine for advance
timing check as directed by manufacturer's instructions.
NOTE:
A vacuum pump equipped with a vacuum gauge is needed to check vacuum
advance.
a.
With engine off, disconnect vacuum hose from distributor's vacuum advance port;
plug vacuum hose.
b.
Connect vacuum pump to distributor's vacuum advance port.
c.
Start and run engine until it reaches normal operating temperature.
d.
Press Function (F) switch as needed to select advance mode. The ADVANCE
indicator and Advance Degree symbol will display when advance mode is
selected. The LCD display will show "0" degrees advance and engine rpm.
e.
With timing light directed at timing marks, note position of rotating timing mark
in relation to reference pointer. Reading should indicate initial timing in
accordance with manufacturer's specifications.
f.
Using vacuum pump, apply specified amount of vacuum to distributor's vacuum
port.
g.
With timing light directed at timing marks, press Cylinder/Advance Increment
switch as needed to realign timing marks to initial timing. Note degrees advance
on LCD display and compare with manufacturer's specifications.
h.
Turn off ignition and disconnect timing light from engine. Unplug and reconnect
vacuum hose to distributor's vacuum port.
Electronic Advance/Retard
Refer to manufacturer's instructions for procedures to check electronic
advance/retard. For some systems, it may be necessary to set the timing light's
advance display to "0" and to read timing from the vehicle's timing marks.