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SKU 94190
For technical questions, please call 1-800-444-3353.
Unpacking
When unpacking, check to make sure the following parts are included.
Cylinder Leakage Tester with Quick Release Chuck
14mm and 18mm Adapters
Adapter Hose
Molded Plastic Case
If any parts are missing or broken, please call Harbor Freight Tools at the number
on the cover of this manual.
About Cylinder Leakage Testing
A Cylinder Leakage Tester can give you valuable information about the engine’s
compression. Pressurized air is supplied to each cylinder, and the rate of leakage
is measured in percent loss from 0% to 100%.
The operator may also locate the source of the compression loss by listening at
these places:
a) Oil dipstick tube for leaking cylinder rings.
b) Radiator fill cap for cylinder wall cracks.
c) Adjacent port for head gasket leaking.
d) Tailpipe for exhaust valve leaks.
e) Carburetor air horn for intake valve leakage.
f) Fuel injector body for intake valve leakage.
If you are not experienced in doing this type of diagnostic test, the work
should be done by a qualified technician.
Cylinder
Leakage
Tester with
Quick Release
Chuck
14mm and 18mm
Adapters
Adapter Hose
REV 03/07
