Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

6.5 Lift pump specs

  #1  
Old 06-26-2013 | 03:01 PM
taylorcraftbc65's Avatar
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Default 6.5 Lift pump specs

What is the pressure of a stock AC Delco lift pump??
 
  #2  
Old 07-03-2013 | 04:37 PM
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5-7 psi-forget the gallons per hour?
 
  #3  
Old 07-03-2013 | 07:58 PM
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I would go with a 10 to 12 psi,the IP calls for 9 psi so it makes you wonder what GM was doing putting a 5-7 psi in there in the first place!
 
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