86 190E hard starting when sits overnight

Help... my wife has a 190E 1987 2.3 Mercedes that is only hard to start after it sits a day or longer.Once it warms up, it works perfect.I replaced the wires,rotor and sparkplugs but it didn't do much.Once I get it started,
it sort of chokes out if I press on the accelerator fast.Any suggestions would be appreciated.
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Your cold start injector may not be working. Either the injector is clogged or may not be getting currents to open. It gets current from thermotime switch. This is what I would check first.
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Cold start system not working. Temperature sensor, cold start valve and time-temperature relay. If any of these fail your car's problem results. First check connections starting at the cold start injector and trace back. If nothing found amiss my $ would be on the time-temp relay.
The reason the engine coughs when you open the throttle is that the mixture is too lean due to this problem.
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Fuel pressure accumulator?
cp
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