Hello to you all. I wonder if you could point me in the right direction please. I have a 1988 300SL and it won't run properly when cold because it is too lean. It won't idle when cold or rev up it keeps coughing back through the inlet. You have to feather the throttle in order to rev it. Once warm it revs up fine.

Does this car have a warm-up regulator because I cannot find one? Fuel pressure is around 100psi

Any help greatly appreciated

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