380sl air/fuel/idle control problems

[scottswope]

instant cold start, great idle, severe lack of power for a few minutes (I don't dare try to pull out in traffic). once warm, power is good. after about 2-3 minutes of running idle jumps from 800 to about 1300 and stays there with or without a/c on. when hot, restart is easy for a few minutes, but after 30 minutes or so I have to hold my foot to the floor to get it to start. I checked the fuel accumulator tonight, fuel drips from hose side(no pressure side) until it sprays out with the engine running, will replace that asap.....what next?