{"id":18371,"date":"2019-03-12T09:24:39","date_gmt":"2019-03-12T08:24:39","guid":{"rendered":"https:\/\/depros.it\/bosch-cp4-pump\/"},"modified":"2026-05-04T09:46:55","modified_gmt":"2026-05-04T07:46:55","slug":"bosch-cp4-pump","status":"publish","type":"post","link":"https:\/\/depros.it\/en\/bosch-cp4-pump\/","title":{"rendered":"Bosch CP4 Pump"},"content":{"rendered":"

[et_pb_section fb_built=”1″ _builder_version=”4.16″ custom_margin=”|||” custom_padding=”0px||0px|” da_disable_devices=”off|off|off” global_colors_info=”{}” da_is_popup=”off” da_exit_intent=”off” da_has_close=”on” da_alt_close=”off” da_dark_close=”off” da_not_modal=”on” da_is_singular=”off” da_with_loader=”off” da_has_shadow=”on”][et_pb_row _builder_version=”4.27.6″ _module_preset=”default” custom_margin=”|auto|52px|auto||”][et_pb_column _builder_version=”4.27.6″ _module_preset=”default” type=”4_4″][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” text_font=”Poppins|300|||||||” hover_enabled=”0″ sticky_enabled=”0″ custom_margin=”||23px|||”]<\/p>\n

The Bosch CP4 Pump<\/strong> represents one of the latest developments in high-pressure diesel injection systems. Thanks to its high performance, it has been adopted on a wide range of vehicles, including Ford, Citro\u00ebn, BMW, Peugeot, Fiat, Honda, Volkswagen, Kia, and Hyundai models<\/strong>. <\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” header_2_font=”Poppins|800|||||||” global_colors_info=”{%22gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4%22:%91%22header_2_text_color%22%93}” header_2_text_color=”gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4″ hover_enabled=”0″ sticky_enabled=”0″ custom_margin=”||18px|||”]<\/p>\n

Main Features<\/h2>\n

[\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” text_font=”Poppins|300|||||||” hover_enabled=”0″ sticky_enabled=”0″ custom_margin=”||33px|||”]<\/p>\n

The CP4 is designed to operate at very high pressures, up to 2,700 bar<\/strong>, ensuring:<\/p>\n

    \n
  • Greater combustion efficiency<\/li>\n
  • Reduced emissions<\/li>\n
  • Improved engine performance<\/li>\n<\/ul>\n

    However, compared to previous models, it offers an important technical feature: the pump operates in direct synchronization with the crankshaft, achieving the same rpm<\/strong>.<\/p>\n

    [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” header_2_font=”Poppins|800|||||||” global_colors_info=”{%22gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4%22:%91%22header_2_text_color%22%93}” header_2_text_color=”gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4″ hover_enabled=”0″ sticky_enabled=”0″ custom_margin=”12px||18px|||”]<\/p>\n

    Critical issue: formation of metal residues<\/h2>\n

    [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” text_font=”Poppins|300|||||||” hover_enabled=”0″ sticky_enabled=”0″ custom_margin=”||-17px|||”]<\/p>\n

    This configuration has a possible side effect: friction between the roller <\/strong>and the internal shaft<\/strong> can generate metallic microparticles<\/strong>.<\/p>\n

    These residues:<\/p>\n

      \n
    • Distribute throughout the entire fuel system;<\/li>\n
    • Reach the injection system;<\/li>\n
    • They can cause injectors to seize up<\/strong> and break<\/strong>.<\/li>\n<\/ul>\n

      The result is extensive damage, with high repair costs, involving:<\/p>\n

        \n
      • High-pressure pump<\/li>\n
      • Injectors<\/li>\n
      • Fuel filter<\/li>\n
      • Entire fuel system<\/li>\n<\/ul>\n

         <\/p>\n

        [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” header_2_font=”Poppins|800|||||||” global_colors_info=”{%22gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4%22:%91%22header_2_text_color%22%93}” header_2_text_color=”gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4″ hover_enabled=”0″ sticky_enabled=”0″ custom_margin=”-26px||9px|||” custom_padding=”0px|||||”]<\/p>\n

        Prevention: Check the pump<\/h2>\n

        [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” hover_enabled=”0″ sticky_enabled=”0″ text_font=”Poppins|300|||||||” custom_margin=”||-11px|||”]<\/p>\n

        To avoid serious failures, it is essential to perform a preventative inspection<\/strong> of the CP4 pump, especially if abnormal symptoms or high mileage are present. The check can be performed relatively easily: <\/p>\n

          \n
        1. Remove the pump regulator (removing the Torx screws<\/em>).<\/li>\n
        2. Visually inspect for any metal debris.<\/li>\n<\/ol>\n

           <\/p>\n

          [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” header_2_font=”Poppins|800|||||||” global_colors_info=”{%22gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4%22:%91%22header_2_text_color%22%93}” header_2_text_color=”gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4″ hover_enabled=”0″ sticky_enabled=”0″ custom_margin=”-19px||10px|||”]<\/p>\n

          What to do if filings are found<\/h2>\n

          [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” hover_enabled=”0″ sticky_enabled=”0″ text_font=”Poppins|300|||||||”]<\/p>\n

          If metal debris is found during the inspection:<\/p>\n

            \n
          • It is advisable to take immediate <\/strong>action<\/li>\n
          • Proceed with the pump inspection<\/strong><\/li>\n
          • Avoid prolonged <\/strong>use of the vehicle<\/li>\n<\/ul>\n

            Prompt intervention can limit damage to the injection system, avoid the need to completely replace multiple components, and therefore significantly reduce repair costs.<\/p>\n

            [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” header_2_font=”Poppins|800|||||||” global_colors_info=”{%22gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4%22:%91%22header_2_text_color%22%93}” header_2_text_color=”gcid-0a9de6b2-9d03-4c1e-b803-fd4d902afdf4″ hover_enabled=”0″ sticky_enabled=”0″ custom_margin=”-4px||8px|||” custom_padding=”||0px|||”]<\/p>\n

            Conclusion<\/h2>\n

            [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” text_font=”Poppins|300|||||||” hover_enabled=”0″ sticky_enabled=”0″]<\/p>\n

            The Bosch CP4 pump is a high-performance component, but requires attention<\/strong> and preventative maintenance<\/strong>.<\/p>\n

            Early detection of any signs of wear, such as the presence of metal filings, is essential to avoid widespread and costly failures and ensure the reliability <\/strong>and longevity <\/strong>of the injection system.<\/p>\n

            [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

            The Bosch CP4 Pump represents one of the latest developments in high-pressure diesel injection systems. Thanks to its high performance, it has been adopted on a wide range of vehicles, including Ford, Citro\u00ebn, BMW, Peugeot, Fiat, Honda, Volkswagen, Kia, and Hyundai models. Main FeaturesThe CP4 is designed to operate at very high pressures, up to […]<\/p>\n","protected":false},"author":3,"featured_media":15544,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[7363],"tags":[11095,11096],"class_list":["post-18371","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-area","tag-bosch-cp4","tag-injection-pump"],"_links":{"self":[{"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/posts\/18371","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/comments?post=18371"}],"version-history":[{"count":2,"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/posts\/18371\/revisions"}],"predecessor-version":[{"id":18373,"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/posts\/18371\/revisions\/18373"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/media\/15544"}],"wp:attachment":[{"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/media?parent=18371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/categories?post=18371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depros.it\/en\/wp-json\/wp\/v2\/tags?post=18371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}