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  #1  
Old 12-22-2005, 03:59 PM
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Join Date: Aug 2001
Posts: 118
89 300SE not starting right away.

As of late my car has not been starting up right away after it has been sitting overnight or for a few hours. I will crank it and it will act as if it wants to start, but won't. If I stop and then try it again it works everytime. It might take 2 or 3 seconds, but it will always work after the first time. Sometimes, I smell something burning under the hood. Once there was smoke in the air filter compartment, I took it off and started the car and haven't had that problem again. When I start the car my lights go dimmer, until it starts. Any ideas? Spakr plugs??

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1986 560 SEC *Sold* < Big Mistake I miss my baby!
1988 300SE *Sold*
1989 300CE - current car, but not for too long
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  #2  
Old 12-22-2005, 04:01 PM
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1989 300CE... oops
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1986 560 SEC *Sold* < Big Mistake I miss my baby!
1988 300SE *Sold*
1989 300CE - current car, but not for too long
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  #3  
Old 12-22-2005, 05:55 PM
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Join Date: Oct 2004
Location: Johnson City, TN
Posts: 985
Defective Fuel Accumulator. This is a check valve that maintains fuel pressure overnight. When they go bad the fuel pressure is not maintained, thus the failure to start on first try.

Just a guess, but that was my problem when I had the no start in the morning symptom.

Steve
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  #4  
Old 12-28-2005, 12:03 AM
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Join Date: May 2003
Location: NJ, Red Bank area
Posts: 66
Could also be leaky injectors: replacing them got rid of the need to start twice, as you describe, on my 300SE (same M103 engine).

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1991 W126 300SE (M103)
1995 W124 E320 Wagon (M104)
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