Own a 1992 300E(125,000 miles) w/M103 SOHC engine. Recently replaced all six fuel injectors along with new injector seals. Engine starts up rough after a day or so without starting and smooths out after a few seconds. Runs smooth during normal driving and after restarts throughout the day. Suspect that one or more of the new injectors is not quite closing off at shutdown and a slow leakdown is taking place overnight or over a few days when car is not started/driven. Is there a simple/easy way to check the injectors individually to see which injector/injectors are leaking down without taking the injectors out and having them tested? THANKS!!!!!
Gilles Kay
GKay737@aol.com