mshah70

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Mercedes w211 2007 E220 Cdi
Hello
Owner of merc w211 e220 Cdi 2007
226k

I am having low fuel pressure issues.
Star diagnostic code 22e7
Check high pressure control ‘rail pressure too low’

When i open up the throttle (hard acceleration) going up a hill or on motorway, the engine light comes on and car goes into limp mode.

I used Star to check high pressure control, Quantity control valve, pressure regulator all sensors seem To be in working order.

I tested the low pressure circuit, fuel pump seems to be in working order.

Please i need some help.
 

LostKiwi

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'93 500SL-32, '01 W210 Estate E240 (RIP), 02 R230 SL500, 04 Smart Roadster Coupe, 11 R350CDi
When was the fuel filter last changed?
 

mattkh

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A160 W168 1999 1.6
I used Star to check high pressure control, Quantity control valve, pressure regulator all sensors seem To be in working order.Please i need some help.
What was the fuel pressure reading on your test while going uphill ?
 
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mshah70

mshah70

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star

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Check injector leak off.
 
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mshah70

mshah70

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What was the fuel pressure reading on your test while going uphill ?

I only checked the fuel pressure at idle
By connecting to fuel filter inlet
Pressure was just under 4bar

Also after a single initiation of the fuel pump, the fuel output was 700ml, which star said was ok
 
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mshah70

mshah70

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Check injector leak off.

Can u guide me on how to do leak off myself, and where can i get the proper test kit
Thanks
 

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