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W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Stock 55k fuel Pressure

     
Old Apr 5, 2011 | 01:47 PM
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Your worst nightmare...
Stock 55k fuel Pressure
I know I know, use the search button. I am in a hurry and can't seem to find it.

Someone please tell me what is the stock fuel pressure on a 55k car. much appreciated.

I only say it because my car seems to be misfiring, we are trying to rule out every possibility. We are checking fuel pressure to see if its too much or too little.
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Old Apr 5, 2011 | 01:57 PM
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06 E55, 03FORD P/S,01 E320-4M,99 ML320,O4 E55,05 RUBICON UNLIMITED,
AROUND 72 PSI
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Old Apr 5, 2011 | 02:01 PM
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Originally Posted by MBTEK
AROUND 72 PSI
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Old Apr 5, 2011 | 02:11 PM
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2003 W211 E55, 2003 W220 S600
80 psi and then drops to 65 psi after 45k rpms
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Old Apr 5, 2011 | 03:07 PM
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Originally Posted by MBTEK
AROUND 72 PSI
Is this at iddle? or is it constant? I have heard it is 65 PSI all the time.

Thanks for the info.
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Old Apr 5, 2011 | 03:08 PM
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Originally Posted by shardul
80 psi and then drops to 65 psi after 45k rpms
Hmm, this is at iddle? If thats the case then i might have a problem, I only need 65 psi to begin with...
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Old Apr 5, 2011 | 04:54 PM
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at idle it is around 80 psi. in the past i have tapped a fuel gauge on the windshield and have done a couple of runs. it drops to 65psi at 45k ish rpms.
now my car is tuned so dont know what the stock fuel pressure numbers are.
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Old Apr 5, 2011 | 05:19 PM
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Originally Posted by shardul
at idle it is around 80 psi. in the past i have tapped a fuel gauge on the windshield and have done a couple of runs. it drops to 65psi at 45k ish rpms.
now my car is tuned so dont know what the stock fuel pressure numbers are.
So im assuming that the pump cant sufficiently keep up with the engine past 4,500 RPMs?
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Old Apr 5, 2011 | 05:23 PM
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2003 W211 E55, 2003 W220 S600
pressure and volume have a inverse relationship
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