I pulled the injectors and found the following numbers on them...

#1 -- R1779-1319 / 06-05-12 / 685
#2 -- F1244-4-7817 / 06.6.5 / UC
#3 -- R1779-0775 / 06-05-01 / 685
#4 -- F1244-4-8647 / 06.6.5 / UC
#5 -- F1244-4-3279 / 06.6.4 / UC
#6 -- F1244-4-8832 / 06.6.5 / UC

I'm assuming the second set of numbers is the date code (ie. 06.6.5 = June 5th 2006). Going by that it looks like they changed the part numbers in June 2006. I wonder if injectors have anything to do with the '06.5 changes? Anyone know if there are any differences besides the part #?

 

From the looks of it, the numbers 685 are May issue and UC are June issue, so we can eliminate that. The 3279, 7817, 8832, 8647 are probaly a production sequence as they are built within a day of each other, and maybe teh 1244 is a production number for June as well, a the May injectors have 1779? So, it seems like a batch ID number for the month, is really the only difference. Of course this is all assumption

 

Yeah I figured the last 4 digits were insignificant. It's the overall change in the structure that I was looking at. Just wondering if there is/could be any relation to the '06.5+ ECM changes?

 

Good question, and one I would have no answer to. Sorry.

 

that is quite the enigma you have undercovered sir

brett