I've been having cold start issues with my 240 the past couple of weeks. When I get in and turn the key, the engine cranks and cranks but takes a few tries to catch. It usually just barely lumps to life and then will idle ok. For the next few minutes, the idle is delicate. After a while the car runs ok. I feel the problem is associated with the damp humid air in the morning. When I get to the car in the afternoon, after work, it starts right up. I've replaced most of the major players during the past two years, incl: plugs, wires, cap, rotor, power stage, ignition coil, battery, crank speed sensor (wire coming off the bellhousing), radio suppression relay. The car is a 5 speed manual with Bosch lh3.1. I do hear fuel pumps when I turn the ignition on.