CP4.2 Bypass kit
Found this interesting for all you Powerstroke guys. While it will not keep the first version(2011-2014) of the CP4.2 from failing, it will keep it from taking down the rest of the fuel system with i...
Forum Discussion
There are 3 main attributes that can cause the fragile CP4 pump to fail:
1. Fuel Contamination (water, DEF, gasoline)
2. Air in the fuel line (typically happens after a filter change)
3. Manufacturing defects of the pump
The best implementation for a CP4 pump is to have really good fuel filtration for both particulates and water. A lift pump to ensure good priming of the pump after a filter change, but still requires correct filter installation and the proper priming process in which a lot of people don't follow.
On another note if anyone believes any auto manufacturer will cover a fuel system repair if there are any signs of rust, DEF and gasoline contamination are either pushing some false agenda or lives in some alternate universe. In addition there will be a time when your beloved warranty will expire and the issues I listed except for any manufacturing defects can still bite you and your wallet.
Customers of the new 2019 Ram/6.7 cummins... tighten your seatbelt because it's going to be a bumpy ride.
1. Fuel Contamination (water, DEF, gasoline)
2. Air in the fuel line (typically happens after a filter change)
3. Manufacturing defects of the pump
The best implementation for a CP4 pump is to have really good fuel filtration for both particulates and water. A lift pump to ensure good priming of the pump after a filter change, but still requires correct filter installation and the proper priming process in which a lot of people don't follow.
On another note if anyone believes any auto manufacturer will cover a fuel system repair if there are any signs of rust, DEF and gasoline contamination are either pushing some false agenda or lives in some alternate universe. In addition there will be a time when your beloved warranty will expire and the issues I listed except for any manufacturing defects can still bite you and your wallet.
Customers of the new 2019 Ram/6.7 cummins... tighten your seatbelt because it's going to be a bumpy ride.
