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 CLEANED
AND CALIBRATED INJECTOR SETS
Rough running? Poor idle? Lack
of power? All of these are symptoms that can be caused by dirty, out of
balance fuel injectors. Man-a-Fre now offers sets of cleaned and calibrated
fuel injectors on an exchange basis.The purpose of cleaning and flow-testing
is to 1) remove any contaminants inside or outside the injector that impede
fuel flow or degrade fuel spray pattern 2) to accurately measure each
injector's
fuel flow ability. The test process is as follows: first, injectors are
installed on a custom- designed-and-built, computer-controlled injector
flow-testing equipment. A unique, non-flammable, gasoline-like test fluid is
pumped at a precisely-controlled pressure through the injectors while they
are pulsed by injector-drivers built into the equipment. The volume of fuel
passed through the injector is accurately measured for a set amount of time
and from those figures, fuel flow is derived. During the flow- test, the
injector spray patterns are visually inspected and analyzed by technicians
using both bright room and strobe lights. After the initial flow-test,
injectors are transferred to an ultrasonic cleaning machine and connected to
injector drivers. They are submerged in cleaning solution and pulsed while
being subjected to ultrasonic waves. The combination of the solution and the
ultrasound aggressively clean the internal and external parts of the
injectors.Finally, the now-clean injectors are reinstalled on the
flow-tester and run again. At the conclusion of the test, a printed report
is produced. This report lists: fuel flow rates (in pounds-per-hour and
cubic centimeters per minute) before and after cleaning, and spray pattern
assessments for each injector tested. Also included is the "system balance"
number which is the flow difference, expressed in a percentage, between the
injectors having the highest and lowest flow rates amongst the lot of
injectors tested. The system's total fuel delivery in lbs/hr. and cc/min
along with a computation of potential horsepower at three different brake
specific fuel consumption rates concludes the report. Injectors are sold in
sets of 6 for 3FE and 1FZ applications.
Core charge refunded after Injectors
of same type are returned and found to be reusable.
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