Mercedes wont start first time - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 01-18-2011, 09:12 AM Thread Starter
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Date registered: Jan 2011
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Mercedes wont start first time

My 1994 Mercedes E420 won't start the first time I try it. But it will start second time.. sometimes third.. Any suggestions???
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post #2 of 2 (permalink) Old 01-18-2011, 11:42 AM
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Date registered: May 2005
Vehicle: '07 GL320CDI
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The fuel isn't there the 1st time.

Check the components designed to maintain fuel pressure at the "rail" after engine is stopped. Usually called "accumulator" or "pressure regulator."

A useful test might be to cycle the ignition switch on/off a couple/three times before attempting a start. I bet it will start 1st time if you do that.

Turning on ignition provides only a 1-3 second run of fuel pump and then it shuts off awaiting signal engine has started.

Kent Christensen
'07 GL320CDI

Last edited by lkchris; 01-18-2011 at 11:47 AM.
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