Drop in pressure and knock/sputter

jandaso

New member
Joined
Mar 13, 2018
Messages
26
I have a 2011 compound and dual cp3 stock with 100% over.

Truck was running fine but now I have a huge loss of power. The truck sometimes picks up power and fuel rail to then later hear a knocking sputter sound and fuel Rail pressure drop.

The air dog lift pump at idles is 20psi and at wot on neutral it stays constant at that pressure. When performing this the truck does sputter and there is a little struggle on the fuel rail pressure.

Im thinking it is one of the cp3 or a industrial injection little computer for the dual cp3 is acting up. (Not sure how to test it)

Injectors at idle on the snap on scanner are running 690-710 all 6 are running very equal.

Can someone point me out on the right direction. ???
 
Intermittent sticking injector.

Run the piss out of Power service diesel Kleen and lube the system.
 
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