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Tdci Injector Leak-Off Test
Posted 28 August 2012 - 05:00 PM
The ICU test in Fordiag shows reasonable correlation to my leak-off test if you look at the CNS results.
Bear in mind that they are numbered in firing order 1342.
Posted 28 August 2012 - 06:09 PM
When you say they are numbered in firing order does that mean Injector 1 on ForDiag is Injector 1, but Injector 2 on ForDiag is actually Injector 3 on the engine?
The same goes for Injector 3 being Injector 4 on the car and 4 being number 2 on the car?
Posted 28 August 2012 - 06:16 PM
Yes, I think you've interpreted correctly. See Fordiag reading of my codes and its headings.
Posted 28 August 2012 - 06:56 PM
Posted 28 August 2012 - 11:18 PM
Thanks for your commendations. I had hoped that I only had one leaky injector because I knew original injector #1 was good (so why not the others?). Yes I was rather disappointed that the Swad. injector appears marginal. I've only just fitted this one and it hasn't done 1000 miles yet. It makes me wonder whether the test is different to what they use.
The bottles aren't very hermetic and they have lots of air in them so I don't think they restricted the flow. I guess I could put a pin hole in each top.
I conducted the test with the engine hot. The test is cribbed from the Delphi test from Nextech. (see the second test in the attachment below.)
Posted 29 August 2012 - 11:39 AM
Posted 29 August 2012 - 12:02 PM
I have now swapped out the 30ml injector and am just plucking up the courage to crack it open. If I find dirt rather than wear in its valve then perhaps there is hope of some DIY repair of injectors.
Posted 29 August 2012 - 03:05 PM
One thing that might be significant is that there appears to have been a small piece of blue sealant trapped between the valve body and the solenoid body that it mates with.
Posted 29 August 2012 - 06:19 PM
Posted 29 August 2012 - 06:35 PM
Yes, I think I'll adopt the same strategy as you and reinstall it when I get fed up the present set.
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