Good morning everyone! I pulled my fuel rail, removed my blue injectors and installed my purchased, cleaned, checked, flowed and rebuilt black injectors. Does anyone know if one color flows more than the other? My 2006 blues are 0280156304 or A1130780123 and the 2005 blacks are 0280156072 or A1120780349. As for me I think the blues are faster but we all know how fast blacks are too. Seriously though, I found a post on MB World saying the blues flow more but I can't find proof. If I find out the blues flow more than the blacks I'll send mine out to be serviced and put the blacks up for sale. Anyone know or have a more advanced search degree than mine?

Les

I just found the answer in a thread I posted in years ago. It looks like the 304's are going out for service.

BTW, when I went to relieve the pressure in the fuel rail nothing came out! I unscrewed the supply line and there was no pressure present. What do you think about that?