| Fuel
Injection Cleaning Process |
Injectors
are inspected when they arrive to ensure they are not physically
damaged, and that all parts are present.
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The
exterior of the injectors are then cleaned to allow for
a closer inspection of the overall condition of the injector.
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| Next,
the inlet screen is removed from each injector and the inlet
of the injector is inspected for rust or corrosion. The
injectors are then taken apart, o-rings, pintle caps and
spacers are removed to prepare the injectors for servicing. |
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The
injectors are next mounted onto the flow test bench and
are pressure tested up to 80psi depending upon the conditions
the injectors will be operating under when installed in
the vehicle. Any injector(s) that leak or drip during this
test are noted on the data sheet and will be checked again
for leakage after the cleaning process has been completed.
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| The
next test is a visual test of the injectors while being
flowed under pressure. The injector spray patterns are checked
for uniformity. Any injector that has an abnormal pattern
is recorded. |
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| Next,
multiple flow volume tests are performed. First, all of
the injectors are flow tested in both a static (wide open)
and a dynamic (pulsed) mode. These are “timed”
tests and range from 15 to 30 seconds. The results are noted
for comparison after the cleaning process. As you can see
from this illustration, the injectors can have a wide range
of flow volume. This shows that these injectors are in need
of cleaning and the engine they came from would not have
been running as smoothly or efficiently as it would have
if all of the injectors were flowing the same volume. |
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| Once
again, the flow difference of the injectors is evident.
By testing the injectors to 100ml, a percentage difference
of flow between the injectors can be easily calculated.
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| The
injectors are now removed from the flow bench and are installed
into the ultra-sonic cleaning tank which contains a special
cleaning solution formulated specifically for electronic
fuel injectors. Here the injectors are pulsed at varying
pulse widths while being subjected to ultra-sonic waves
that break up and dissolve debris that has collected on
the outside and inside of the injector outlet. This process
can last up to 30 minutes depending upon the condition of
the injectors. |
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| The
injectors are then flow tested again in both static and
dynamic modes. This data is recorded and compared to the
initial flow data from before the injectors were cleaned.
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| Once
the flow tests have been performed, the injector housings
are treated with a high temperature paint to prevent them
from corroding or rusting. Injectors with plastic housings
skip this step. The injectors are now ready to reassemble
with new o-rings, inlet screens and pintle caps (if applicable).
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| The
assembled injectors are now given a final flow test. The
injectors are then flushed with a paraffin-based oil to
protect the internal parts during shipping and storage.
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| The
final step is individually baggin up the injectors ready
for return shipment. |
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| If
you have questions or need more information, please contact
us.
info@boxermotorworks.co.uk
Warranty information: Injectors that have
been serviced are guaranteed to flow as tested at the
time of servicing and when shipped from Boxer Motor Works.
Injectors are delicate pieces of equipment. They can be
damaged by improper removal and/or installation techniques.
Failure of any injector due to improper removal or installation
will not be covered by warranty. Be sure to follow your
particular manufacturers installation guidelines when
removing or replacing your injectors.
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