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Fuel pressure

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Old Jun 22, 2021 | 02:20 PM
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Talal Al Hadidi's Avatar
Talal Al Hadidi
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From: Iraq - Mosul
ML350 bluetec 2010. W164
Fuel pressure
Pls. I need to understand how to build high fuel pressure in fuel rails in engine OM642 while there is an open pipe to the return line to the tank ??
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Old Jun 23, 2021 | 05:02 AM
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Maj. Dundee
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2002 ML 320 & 2006 ML500
Scan for codes in fuel rail for Y74 and Y94.
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Old Jun 23, 2021 | 08:36 AM
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Talal Al Hadidi
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ML350 bluetec 2010. W164
Originally Posted by Maj. Dundee
Scan for codes in fuel rail for Y74 and Y94.
Thanks for your kind reply
I'm asked this because I removed the left fuel rail and see that the valve inside the rail not long enough to reach the return line I point with red in the attached photo


??
so this valve does not control the return of fuel to the tank 🤔
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Old Jun 23, 2021 | 10:07 AM
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Maj. Dundee
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Well then the part was probably installed by a [previous owner. You must buy you parts at a M/B dealer.
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Old Jun 23, 2021 | 10:20 AM
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Talal Al Hadidi
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From: Iraq - Mosul
ML350 bluetec 2010. W164
Dear Sir
I think you mean that the parts is not properly installed by the previous owner ? , I compare it with another car like mine ( ML350 2010 , VIN
4JGBB2FB6AA593877 ) it's the same installation and same part no. !
am sorry to take your time but my problem still the same code P0087 fuel rail low pressure .

Thanks
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