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 ...

Diesel engines operate at higher compression ratios than gasoline engines, and fuel is injected under much higher pressure. An injection pump, usually driven by a belt or chain linked to the ...

In fact, while examining the most reliable Duramax diesel engines and which to avoid according ... Unfortunately, in the case of the Duramax, the Bosch CP4 fuel pump can become a weak link in ...

General Motors settled a fuel pump lawsuit for $35 million, so some GMC and Chevy truck owners could get paid.

The defective fuel pump, produced by auto parts manufacturer Denso Corp., has caused engines to shut down while driving. The automakers affected have recalled about 2.68 million vehicles in Japan ...