VEHICLE APPLICATIONS
VACUUM LEAKS: Place the hollow air probe on the unit and lis-
ten and watch the LEDs. You can pinpoint the location of vacu-
um leaks quickly and easily. Use the hollow air probe or use
the receiver alone.
FIND THAT ENGINE NOISE. The Marksman II will locate those
engine noises and let you find where they are truly coming from.
Ultrasound does not transfer within engine components due to
the directional characteristics of ultrasound. Use the solid con-
tact probe.
ELECTRICAL SYSTEMS: Separations in high-tension spark
plug wire conductors can be quickly identified from the corona
discharge "snapping" sound emitted. The same applies to arcing
within electrical motors and accessories. Also, listen to connec-
tion points for the "snapping" or "frying bacon" sound; this is a
sound a poor connection makes under electrical load. Circuits
are best tested under operation and full load.
The Marksman II is also great at locating short circuits. Shorts
give off a "frying" or "snapping" sound also. As you are checking
for shorts or connection problems, do not forget to wiggle the
wiring! Those electrical problems will now call out to you. Save
time! Use the hollow air probe or use the receiver alone.
IGNITION SYSTEMS: Listen to today's ignition systems. You
can hear the coils and plugs firing. This is by far the best and
quickest method for diagnosing Coil Over Plug (COP) systems. It
also works great on Distributorless Ignition Systems (DIS). You
will hear the snapping of the plugs firing in the headset. After
some experience testing ignition systems, you will be able to tell
if you have a plug or wire problem by the sound alone. When
checking DIS systems, make sure you listen at both ends of the
wire if you can. Use the solid contact probe or use the receiv-
er alone.
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