Engine Mechanical problem
1990 Mercedes Benz 300e 6 cyl Two Wheel Drive Automatic 190, 00 miles
When car is just started it runs great. As soon as it gets to running temperature it runs terrible. It appears to be fuel related because when you step on the gas it does very little unless you nail it. Then it takes off. Its not like you can feather the gas, it is all or nothing. Sometimes it makes a popping sound. No power unless you put petal to the floor. Replaced
gas tank, fuel pump, fuel filter, fuel injectors, cap, rotor, plugs and wires. Can't figure it out.