gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Fuel Pressure|Specifications|Page 1927 > < Timing Cover|Service and Repair
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Fuel Pressure: Specifications
Fuel System Pressure

Fuel System Pressure 

Static Pressure Reading

35 to 38 psi 

Check pressure with the key ON and the engine NOT running.

 

   

  

 

Reading At Idle

25 to 30 psi 

Engine running at idle speed, vacuum line plugged into

 

regulator.

 

   

  

 

Fuel Pressure|Specifications|Page 1927 > < Timing Cover|Service and Repair