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1990 Mercedes-Benz 560SEL Question: My 560 sel starts very hard especially in colder weather or after it sits .

 

Question

vagabon, Springfield, IL, February 10, 2013, 10:33
 Rookie

If you hit the air intake with a dab of either it starts and runs perfect. Also starts great after warmed up, it seems to have low fuel pressure on cold starts

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  • Answer #1

    February 10, 2013, 11:08
     Master

    check your fuel pressure when it is cold

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    vagabon, March 03, 2013, 10:55
     Rookie

    Fuel pressure is very low if any until the motor really gets cranking or engine is warm then it is fine. Waht would correct that situation?

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    goodguy, March 03, 2013, 13:54
     Master

    a new fuel pump

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