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A diesel fuel delivery system contains a variety of components that individually and in combination improve fuel economy and reduce environmental pollution. System improvements include a neck-stabilized check valve body, a fuel heating system, a screen water separator, a stress relieving groove in a

A diesel fuel delivery system contains a variety of components that individually and in combination improve fuel economy and reduce environmental pollution. System improvements include a neck-stabilized check valve body, a fuel heating system, a screen water separator, a stress relieving groove in a fuel pump cavity, a divider wall in the filter head, an inverted cup formed in the filter head with improved positioning of the fuel ports, and a non-spilling filter head for use in retaining fuel while changing the fuel filter.

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A diesel fuel delivery system contains a variety of components that individually and in combination improve fuel economy and reduce environmental pollution. System improvements include a neck-stabilized check valve body, a fuel heating system, a screen water separator, a stress relieving groove in a

A diesel fuel delivery system contains a variety of components that individually and in combination improve fuel economy and reduce environmental pollution. System improvements include a neck-stabilized check valve body, a fuel heating system, a screen water separator, a stress relieving groove in a fuel pump cavity, a divider wall in the filter head, an inverted cup formed in the filter head with improved positioning of the fuel ports, and a non-spilling filter head for use in retaining fuel while changing the fuel filter. herein said second branch includes a relief valve adapted to allow fuel to flow from said fuel delivery pipe into said motor cavity and to prevent fuel flow from said motor cavity into said fuel delivery pipe.20. The fuel pump of claim 19 wherein said relief valve is a regulated one-way valve adapted to allow fuel to flow from said fuel delivery pipe into said motor cavity only when the fuel pressure within said fuel delivery pipe exceeds a pre-determined level.21. An in-tank fuel pump for an automotive vehicle comprising: a pump housing, said pump housing including a base having a pumping chamber formed therein and a cover mounte