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Discussion Starter #1
does anybody know the fuel pressure from the stock pump to the motor ? i just fabbed up a mount for a parker racor 2 micron filter i had laying around made up some aeroquip lines. i mounted it where the 2nd alternator would go on my 06 lly and was going to tap into the fuel lines going to stock filter when i noticed filter and head are a vacuum side design wondering if it will be to much pressure thanks
 

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i just read some where else there is no lift pumps then what transfers fuel to motor before injection ? or am i good and i am in a vacuum situation for my filter set up
 

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The factory "lift pump" is in the back of the injection (cp3) pump. It pulls from the tank.
 

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There are no lift pumps from the factory. The fuel is pulled from the tank by the low pressure side of the CP3 pump. You will be running vacuum with your second filter. It may even cause sufficient restriction that you will need to add a lift pump.
 
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