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I'm going to try to answer this question, even though you didn't offer a lot of information. If the car starts up cold all the time, but you have problems after its been running for a while, it may be a small valve next to the fuel pump and fuel filter underneath the car. When you ask the parts guy at MB, he'll know exactly what it is...it's a typical service item. You might want to check the last time you replaced the fuel filter too. And check the gas cap...make sure its seal is intact...these systems run on pressure... Does the engine crank with enough power? If not, check your battery. If the battery is good, check your alternator's output...these alternator's are putting out about 75 watts. Have you checked your fuel lines? You might want to buy a good fuel/carb cleaner to add to your gas tank....it will help get rid of any water that might have accumulated. A good test for water in the tank is poor performance while passing another car, or when you drive up hill...the car will feel like its running on 4 cylinders. When the car is hard starting, look at the exhaust when it finally starts. If you see a bunch of heavy black smoke coming out of the exhaust...you might have a fuel distributor problem too...and that's going to cost. Those are basic checks....if the above doesn't fit your problems...you'll need to get a tech involved. Did you happen to notice all that Plumbing underneath the air cleaner? There are about 4 valves that regulate fuel...a slide control, cold start valve, etc. it could be one of those too.

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18y ago

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