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1993 Mercedes Benz 500sel starting

Tiny
KEENMA
  • MEMBER
  • 1993 MERCEDES BENZ 500SEL
  • 5.0L
  • V8
  • AUTOMATIC
  • 322,000 MILES
Take long time to start after the car set for hour or over night. After start run fine. Lot of power. I changed gas filter. Air filter. Spark plugs.
Still the same. May be check valve? Fuel pump?
Wednesday, January 29th, 2014 AT 7:26 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
I would recommend checking fuel pump pressure when it is cold to see if it is within the manufacturer's specs. Also, with that many miles on the engine, it may have low compression which in turn would make it hard to start cold.
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Wednesday, January 29th, 2014 AT 8:30 AM

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