Hi guys , something strange happened to me . My car with a freshly rebuilt injection pump has always suffered , even before the pump rebuilt , from an hard cold start . I decided to overhaul the csv with the help of my mechanic , we found out that the internal jets have been blocked by some sealant . We put everything back together but the car was running so rich with a huge amount of smoke and very rough. We came with the conclusion that the csv brass needle and spring are not sealing properly , there is no other explanation. I believe that even if the csv is activated only with the solenoid input , there must be always a fuel pressure coming in the pipe so if there is no proper seal , you will have a flood of fuel into your engine .
I decided to buy from the sl shop in uk a new brass needle and spring , I also bought a new strainer connection to the csv , I guess it should improve the sealing capacity .
Have you ever had this problem with needle replacement ? I haven’t find nothing in forum .
Thank you