Background - SPX LeakTamer Plus Evap Manual Del Operador

The fuel vapor recovery system is the most
neglected part of a vehicle's emission
system, according to the Environmental
Protection Agency (EPA).
The vehicle's EVAP system is used to collect fuel
vapors from the fuel tank. These vapors are stored in
a canister filled with activated charcoal. The EVAP
system allows the fuel vapors to be drawn from
the canister and combust during certain operating
conditions. This process is called canister purging,
since the fuel vapors are purged from the canister.
OBD-II requires Powertrain Control Module (PCM)
monitoring for correct operation of the EVAP system
and for possible leaks to the atmosphere.
A faulty EVAP system will allow hydrocarbons (HC)
to escape into the atmosphere. Factory emission
tests have determined that an EVAP system
with a leak as small as .020 can yield an
average of 1.35 grams of HC per vehicle-
driven mile. This is over 30 times the current
allowable exhaust emissions standard.
In addition to causing HC emissions, failure of the
EVAP system wastes fuel and many times creates
customer-complaints of "gasoline odors." With
the introduction of On-Board Diagnostics
(OBD), the automotive industry is capable
of determining if a vehicle's evaporative
system has a leak. Prior to the LeakTamer Plus,
determining the location of an EVAP leak was a
difficult and time-consuming challenge.
Operation
LeakTamer Plus uses an inert gas, such as nitrogen, to
test the integrity of the vehicle's fuel vapor recovery
system and determine if a leak exists.
Then it is possible to find the leak using both visual
vapor (smoke) and UltraTraceUV
®
UltraTraceUV is a unique chemical bonded to the
smoke that deposits an ultraviolet fingerprint at the
exact location of the leak.
This operation is accomplished automatically.
LeakTamer Plus sets the critical pressure that must
be maintained during EVAP testing. You don't need
to set flow rates, and you don't need to be concerned
with ambient temperatures or barometric pressures.
LeakTamer Plus will not spill its solution regardless
of the position it's placed in, and is refillable by
the end user when the smoke-producing solution
is depleted. The smoke it produces, as well as the
UltraTraceUV dye, is non-toxic and non-corrosive.
LeakTamer Plus needs no assembly, is self-
calibrating, and requires no maintenance other than
an annual smoke solution change.
Read this manual in its entirety before
performing any actual tests on a vehicle. The
LeakTamer Plus should be operated only by
trained and qualified technicians.
®
technology.

Background

Tech Tips
• When the vehicle's engine is turned off, the
OBD-II EVAP system is generally venting
in one form or another. Use a scanner
to close the EVAP system in order to
perform any leak tests. Remember, ALL
tests with the LeakTamer Plus are
performed with the engine OFF.
• Perform all testing in calm air, so the
smoke exiting the leak will not be blown
away, impairing your view of the leak.
• Because of the EVAP system's volatile
fumes, use an inert gas, such as nitrogen,
when testing the evaporative system.
However, LeakTamer Plus is also designed
to perform its functions with conventional
shop air, if being used to test systems other
than the EVAP system.
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