Case 400 fuel psi drops off

Anonymous-0

Well-known Member
I have a case 400 diesel and after it runs for awhile the fuel pressure drops off. I checked and cleaned the primary filter, fuel tank, and supply line from the tank to the primary filter. I noticed that after the pressure drops off and I crack the fuel line from the primary filter to the lift pump I have no fuel. If I leave the line cracked for a short period of time the fuel starts to come out again and the pressure comes back. any thoughts?
 
maybe others will chime in and teach us bothh . probably need you change the filters.. but i think you are about to give that 400 TINkERITCe,, i think it normal for fuel pressure to drop once the motor gets hot..
 

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