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#1
12-22-2005, 03:59 PM
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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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#3
12-22-2005, 05:55 PM
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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
12-28-2005, 12:03 AM
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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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