It really was surprising that they went with CP4. They clearly saw the issues Ford and GM were having running that pump when they were running the CP3.
Hmmm, build date on truck was 11/2020.
I don't recall the door sticker giving an actual "date" like the 10th or the 8th of November.
I will have to double check in the morning.
I will say that cummins implementation of the CP4.2 asymmetrical pump was a disaster and not sure why this was required, but may have something to do with the fuel pulses/load on the pump with the 6 cylinder firing order setup. Anyways it just shows any manufacturer can implement a change that wasn't tested thoroughly and it backfired on them.
'12 Ford Super Duty FX4 ELD CC 6.7 PSD 400HP 800ft/lbs
"250k Miles"
'16 Sprinter 319MKS "Wide Body"
ksss wrote: It really was surprising that they went with CP4. They clearly saw the issues Ford and GM were having running that pump when they were running the CP3.
The CP4.2 pump doesn't like air in the system especially when you change the filters. Not having a lift pump was a big mistake with GM's implementation. I believe they have one now.
ksss wrote: It really was surprising that they went with CP4. They clearly saw the issues Ford and GM were having running that pump when they were running the CP3.
The CP4.2 pump doesn't like air in the system especially when you change the filters. Not having a lift pump was a big mistake with GM's implementation. I believe they have one now.
I will say that cummins implementation of the CP4.2 asymmetrical pump was a disaster and not sure why this was required, but may have something to do with the fuel pulses/load on the pump with the 6 cylinder firing order setup. Anyways it just shows any manufacturer can implement a change that wasn't tested thoroughly and it backfired on them.
So Ford doesn’t have any loos of power issues with the CP4.2??
ksss wrote: It really was surprising that they went with CP4. They clearly saw the issues Ford and GM were having running that pump when they were running the CP3.
The CP4.2 pump doesn't like air in the system especially when you change the filters. Not having a lift pump was a big mistake with GM's implementation. I believe they have one now.
They also switched to the Denseo pump.
Don't know anyone who has the LP5 but I heard they were having injector problems.
Offline
