M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

Starting on second try

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Old 10-13-2017, 03:48 PM
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2002 ML 500
Starting on second try

Start on first try may be prolonged or won't start at all. Second try starts right up. Runs like a top once started. I'm thinking it may be either the fuel filter or fuel pump. Any thoughts?

Last edited by tsilva; 10-13-2017 at 03:57 PM.
Old 10-15-2017, 03:14 AM
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2002 ML 320 & 2006 ML500


If the CEL is not illuminated, then it is probably a fuel issue. Start by purchasing a Fuel Pressure Gauge and attach it to the fuel rail. Then turn the key to pos. #2 and note the fuel pressure reading.
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Old 10-17-2017, 04:33 PM
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Smile Thanks a lot !

I will do exactly that and l let you know what I find out. Thanks again.

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