Equus 3568 - INNOVA Digital Timing Light - Manual (Page 6)

BEFORE YOU BEGIN
Make a thorough check before starting any test
procedure and fix any known mechanical prob-
lems before performing any test. Loose or dam-
aged hoses, wiring, or electrical connectors are
often responsible for poor engine performance.
Refer to your vehicle’s service manual for
proper connection of vacuum hoses, electrical
wiring, and wiring harness connectors. Check
the following areas:
■ All fluid levels
■ Spark plugs and spark plug wires
■ Air cleaner
■ Vacuum hoses
■ Belts
■ Electrical wiring
■ Electrical connectors
ENGINE PREPARATION BEFORE
TIMING
Always prepare the engine for timing before
performing a timing check. Refer to the Vehicle
Emission Control Label or service manual for
timing procedures and specifications for your
vehicle. The Vehicle Emission Control Label is
located under the hood in the engine
compartment. The label is typically located on
the underside of the hood, on a fender well or
valve cover, or near the hood latch.
1
2
3 4
5
6
7 8
9
10
11
10
12
13
12
14
Fig. 1 Timing Light Controls - General
4
USING YOUR TIMING LIGHT