I'll also refer you to this thread:
http://www.expeditersonline.com/forum/truck-talk/48578-re-sprinter-fuel-injectors.html
my little adventure this week...
I had a power issue this week....actually started last Thursday during a load to Neb. A shake in the engine, more like an missing sparkplug, a sort of tug....it came and it went. While driving to a dealer in Des Moines the engine light finally came on...I thought good...this will give the tech a reference point to hunt it down....did a fuel pressure test and found fuel filter pressure low and changed it...left and as soon as I got on the on ramp...NO getup and go...now in Newton at a Wally World idling for a minute and the engine starting shaking like the bottom end was going to fall out...back to the dealer....got on the ramp...viola I had power...?? Got to the dealer and it sat for 40 minutes..nothing not a tremor..nada. While this dealer accomadated me to get me on..the tech not once took it for a road test???
So off I go...picked up a load in Manchester Iowa to Garland Tx..power was on again off again...delivered and went down to Berry Dodge in Corsicana Tx because they'll dicker on prices and have 2 really good techs there...
First thing they do is a test drive..oh BTW no engine light. No stored codes. Now they do a pressure test on injector pump...failed....changed the pump..They took it for a drive APPEARED ok...I pay the bill hit the on ramp...Tada..NO power WTF!!, back I go...Standing next to the tech...and thankfully it starts that violent shaking right in front of him...GREAT...now he knows the exact problem..sensors on the fuel rail....problem is...ya just can't get the sensors alone they are built into the rail...another example of German OVER engineering...They over night a rail from Dallas...and whilst he is taking it apart...the tech comes over and says I have a external leak on the #2 injector appears to have just started so "Black Death" will not be an issue..it came out clean...Viola I am out of there....
Total between Des Moines and TX..about $3,200$.
Mind you I have now 632,000 miles on this system and it was all original equipment taken out and I haven't spent a cent on it before...It was more aggravation hunting down the problem then the cost issue...further more over 6 yrs. no money spent till now, that would average out to just $550 a year for this problem...not bad when ya look at the big picture...
Note to self...get 4 injectors from Euro parts for future install....