The first injector we tested for this report was an OEM Reliabilt™ injector.  Our primary purpose in testing this injector was to verify the results that we were receiving from our test bench, and this injector proved to be of good quality.  This is something we have come to expect from the OEM, and in this case we were not disappointed.  Our goal is to provide an injector equivalent to this one, but at a better price!  The test results for this injector are shown below:

Since in most cases a new OEM injector is our standard (assuming it tests ok), we will use the results from this injector as our standard for the other injectors we tested in this report.

The second injector we tested was produced by a major aftermarket supplier.  They remanufacture these injectors in their own facilities, and supply them through their own distribution network.  We do not know what processes and/or equipment they use for final testing.  Here are the test results:

These results surprised us, since we expected better!  This injector has very close to the proper fuel flows and the response time is a little slow (compare the first arc in this curve to the same curve in the Reliabilt™ graph).  This injector has serious issues with PIP (Peak Injection Pressure).  To be fair, we only had a single injector to test, so this injector may not be representative of the overall quality of Series 60 injectors remanufactured by this supplier.

This injector would not have caused any serious problems with the engine, nor would it have triggered any fault codes to be set by the ECM (Engine Control Module).  It would however have an effect on overall performance and fuel economy.

We plan to return this injector as defective!

The third injector came from another fuel injection shop.  We are not sure if they even test them.  After our testing was complete, we  disassembled this injector, and it appeared that the only new and/or remanufactured parts used were the o-rings.  Based on these findings, the test results were to be expected.  It is almost impossible to produce a quality EUI without an extensive investment in time, tools, people, parts and equipment!

This injector would have caused some serious problems.  If installed, it would have resulted in fault codes being set by the ECM, and this engine would have had significant power, performance and fuel economy issues.  We had 6 these injectors for testing, and 4 out of 6 tested the same or worse than this one.  Two of the injectors from this set tested ok, with the exception of the 500 RPM fuel flows which were too high.
 

The last injector we tested for this report was one that had been remanufactured by us ... actually we tested 3 of them at a time, two of them passed and the third did not.  This test report shown below is one of the two that passed all the tests.  The injector that did NOT pass all the tests had low fuel delivery at higher speeds, and the PIP was at the low side of the acceptable limit.  Further investigation revealed that the poppet valve had a small leak which was NOT detected during the process of remanufacturing the injector.  This is why we use equipment such as the IPC200, and that particular injector would never be sent to a customer.

The injector shown in this report passed all the tests, and the pressure graphs are the same as a new OEM injector.  This is an injector that we can confidently put into service, knowing that it meets or exceeds OEM specifications.