Now retired at 75, was involved back in the day with all aspects of the "Bosch" "K" & "KE" systems, the fact as you say the engine bursts into life right away tells me your only running on the Fuel spray from the 5th injector, may I ask if you continue to try...does it eventualy run...but difficult to keep going till it warms up a little...ie..touch the throttle..and it stops again ?. this then points to the Pressure actuator not working and not increasing Fuel pressure for the cold start up, but once you get it running all fine, need to know this...wont go into more at moment, but can give ALL tests for Pressure actuator. Peter.