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  #1  
Old 08-26-2002, 10:08 AM
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Join Date: Apr 2002
Location: Connecticut
Posts: 61
Question 300SEL no longer starts at first crank

Hi everyone, I have a 1988 300sel with 190k and recently it requires second crank to start. I've installed platinum plugs but didn't fix the problem. Some times I hear a back fire the first time I turn the key then starts fine the second time. The car runs fine otherwise. Could this be a fuel pressure problem? or maybe wires and distribuitor? Any help would be appreciated.

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Armind
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Old 08-27-2002, 01:29 AM
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Join Date: May 2002
Location: Des Moines, Iowa
Posts: 64
HI Armind

Ditch the Platinum plugs for starters, that motor does not work well with them. Put some W9DCO Bosch in it.... the bad news... they won't fix it either. But it will not run correctly even after you fix your other problem. My first thoughts are vacuum/false air leaks in the intake system. Injector seals and idle air hoses are common leaks with the miles on your car. I suggest this because of the back fire you hear. Dripping injectors are a possible cause too. They will cause a start/die/restart complaint. A lose of fuel pressure will cause an extended cranking condition and affect a hot engine restart most. There could be other causes but I think you will find your problem in one or both of these areas.

fasthair
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