Diesel Injector Clean / rebuild & Codes - Alfa Romeo Forum
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(Post Link) post #1 of 4 Old 23-09-15 Thread Starter
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Diesel Injector Clean / rebuild & Codes

As an example see post below....

The diesel injectors have a correction that the ecu uses to calculate a value. The correction code is determined through tests carried out when it's manufactured. If you have your injectors cleaned or rebuilt, which is inevitable, does anyone know whether this code should be altered if does it become redundant?

And if it does become redundant, wtf is the answer in terms of a new code for the injector?


Originally Posted by sussexa View Post
ok checked what I have spare, I have 3 of mine and 1 of tested set(that was worse than my old best one)
so at time I reckon I fecked at least 1 possibly 2 using ****e leak back test kit with not properly drilled holes these were tests before and after
inj correction cyl1 = 0.15mm3/i injector code 8SAPHOCAA
inj correction cyl2 = 0.35mm3/i injector code 8HISE6AAA
inj correction cyl3 = -0.52mm3/i injector code AHSLC2AAA
inj correction cyl4 = 0.02mm3/i injector code AHZIDTAAA
inj correction cyl1 = -2.1mm3/i
inj correction cyl2 = -1.5mm3/i
inj correction cyl3 = -0.7mm3/i
inj correction cyl4 = +4.04mm3/i

so I reckoned 4 was fecked for sure( AHZ1DTAAA)SO I WOULDNT UST THAT ONE
I have 8H1SE6AAA id say was next best
I have 8SAPHOCAA id say was next best of my originals
I have AAAGAT7AA was tested but gave higher values than my old best one
I have AHZ1DTAAA (WOULDNT USE OR TEST IF I WAS YOU, most likely damaged internally)
so if you want use or get tested id say in that order
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If you have the injectors properly rebuilt then they should go on a special rig once finished which will produce a new code to program into the ECU. Some reconditioned offer to clean the injector and then you can reuse the original code, not sure that this is the way to go as it just seems to be an ultrasonic clean, not a proper rebuild.
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unfortunately sees to be a bit hit and miss for rebuilds with results varying on who does them.
see this thread
http://www.alfaowner.com/Forum/alfa-...d-startup.html (Clattery/Smoky 159 2.4 JTDM on cold startup)
should have been sorted on first injector rebuild, it was retested and met specs (in hindsight looking at values injector 5 was still way below delvery of other 4 at idle even if it met spec)
and this is where a new ima code being generated would possibly have helped, , trouble is im not seeing anyone confirming they can generate a new ima code)
ive got the ima explination in my tread here post 194 to 196
http://www.alfaowner.com/Forum/tunin...jtd-16v-8.html (stilo jtd 16v)

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(Post Link) post #4 of 4 Old 24-09-15 Thread Starter
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Thanks for the replies.

Does the cleaning proces require the disassembly of the injector?
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