Starting in 2011, Ford and General Motors began using Bosch Mobility CP4 pumps to provide high pressure fuel to their diesel engines. GM used the pump on its 6.6-liter LGH and LML Duramax diesel ...
The In-Tank pump was born.. The dealer would take off your block mounted pump and install a block-off plate and the they would add a new carter pump in the sending unit of your fuel tank. Purpose of this was that it would now PUSH the fuel to the engine instead of PULL like the OEM engine mounted pump did...
SlashGear: CP4 Pump: Which Diesel Engines Use It And Why Is It So Problematic?
CP4 Pump: Which Diesel Engines Use It And Why Is It So Problematic?
Then if a lift pump upgrade is needed down the road, the Fleece in-tank dual pump system or a standalone external lift pump would work without changing the fuel filter system.
The vacuum pump can leak however, as it is lubricated by pressurized oil from the engine's oiling system. A vacuum pump seal kit can be had at your local cummins dealership for less than $10 (I think I paid $8).
To do so, you need to install an additional oil feed line from the engine block to the vacuum pump and also saw part of the throttle mounting assembly out of the way of the PS pump since the newer type vacuum pump is a little longer than the older style pump. It was pretty easy once I bought the turn key upgrade and started installing everything.
Fuel Pass made mandatory for motorcycles at 11 fuel pumps in Dhaka from ...