what to do , where to start ?

[mike putman]

I just purchased a 88 300E w/ 85000 mi. It ran great for a short time , but now it will be OK for some few miles then begins to shutter , stutter , and stall. It will restart but , only idle roughly , can't be driven further without stalling. Seems to occur when it comes up to operating temp. not overheating. I'm not having any of the panel lights come on, ck. engine etc. It does emit a little smoke out of exhaust when first started but, quickly dissapates. I've been told it's possibly bad valve seals fouling the plugs out , perhaps a sensor, maybe just a funky fuel filter or fuel itself. Anyone out there with similar exp. or knowledge? PLEASE help a guy out. I'm a first time MB owner , I've heard great things about them and I want to believe. Any and all ideas very much appreciated.THANX MP