Automotive/1999 mercedes C280

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Question
After my car has sat all night and I try to start it in the morning it will start and die right away like it is not getting fuel. Whn I start it again it will usually stay running but barely. It takes 2 or 3 minutes for it to warm up to where it will take some gas pedal. If I do give it some gas it will die. Once it is warm it runs great. The car has 99000 miles on it and I have only had the car for a couple of months and this is a new thing. Any thoughts?

Answer
On this model there are many reasons and components that will cause this.I would change the fuel filter first and see if this helps and after that you will need to look further such as the egr system,vacuum hoses,idle air control unit and so on.Has your  check engine light came on?Look for cracked vacuum lines and especially the maf and the main hose from the air filter to the intake.A really hard one to find if there is no check engine and its a matter of elimination of components one by one.

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Sean Halliday

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general auto repair,japanese,bmw,mercedes,mini cooper 1960/2009,general british cars,ford.I DO NOT work on automatic transmissions.Manual transissions i install clutches only.Many people ask me to diagnose noises from their cars,unfortunately i cannot do this unless i hear it.As you appreciate,vehicles can and will make a variety of noises.I DONT UPGRADE or fit aftermarket performace kits,parts,chips,only replacement parts.

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40 years experience on all general auto repair.

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