Kent-Moore J-44175-A Manual page 23

percentage to be more than 15% (higher than 65 Hz),
replace the fuel in the vehicle with normal regular
gasoline.
Follow the appropriate General Motors
Diagnostic Service Procedure
It is very important that the proper General Motors
Service Procedure be followed to produce reliable
test results. Depending on the circumstances, the
user may need to reference one or more of the
following procedures:
- Fuel Composition Diagnosis
- Alcohol/Contaminants-in-Fuel Diagnosis
- Fuel System Cleaning
End of Test Procedure
When the test is complete, disconnect the DMM
from the Fuel Composition Tester by removing the
DMM test leads from the tip jacks at the base of
the tester handle. The fuel sample can be discarded
by picking up the tester by the handle and pouring
the sample out of one side of the funnel (see figure
14). Fuel should be disposed of in accordance with
all applicable federal, state and local requirements.
In order to prevent contamination of the sensing
cell it is recommended that the tester be allowed
Figure 14
to air dry with the tester upside-down for at
least five minutes. DO NOT USE compressed
"shop air" to blow out the tester. Compressed
shop air often contains water or solid
contaminants that could leave the tester's
sensing cell "dirty". Simply turn the tester
upside down on a flat surface, such as a
metal workbench. the tester has been designed
to allow fluid to exit the tester in this position,
and ambient air is sufficient to dry it. The handle
and outside surfaces of the tester can be cleaned
with a damp cloth.
25