Fuel pump Archives - Page 4 of 5 - UnderhoodService
Giving It The Gas: When The Fuel Pump Isn’t The Problem

The most famous last words in automotive diagnostics are, “We’ve always done it this way.” In many cases, “always done it this way” consists of diagnosing a fuel pump by squirting some type of liquid or gaseous hydrocarbon into the air intake. Case in point, a 2011 Nissan Rogue had suddenly stalled on a busy summertime highway.

Rethinking Fuel Pump Diagnostics And Sensors

The technician diagnosed the 2011 Rogue as a bad fuel pump by squirting propane into the air intake. With propane, the engine runs, without propane, it stalls. But, after the fuel pump was replaced, the Rogue exhibited the same problem, which was a very slow, unsteady idle followed by an engine stall.

VIDEO: Checking The Voltage On A Fuel Pump

Andrew Markel explains how modern vehicles have pressure sensors that send out a voltage signal, and how a diagnosis can be made by measuring the signals with a scope. Sponsored by Auto Value and Bumper to Bumper.

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VIDEO: Extending Fuel Pump Life

Andrew Markel discusses cleaning the fuel tank and how it can improve the life of the fuel pump. Sponsored by Auto Value and Bumper to Bumper.

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Delphi Product & Service Solutions Launches ‘Clean The Tank’ Initiative

Most fuel pump and module warranty issues are linked to debris or contamination in the fuel tank that may have accumulated over vehicle use, or during the removal and replacement procedure.

Carter Fuel Systems Introduces 19 New Part Numbers

The new part numbers include 12 fuel pump module assemblies, three direct injection high-pressure fuel pumps, three fuel pump tank lock rings and one fuel tank sender assembly.

BMW Extended Warranty On S63 Direct Injection High-Pressure Fuel Pumps

BMW has extended the warranty on the high-pressure fuel pump for the 2012 X5 M and X6 M models with the S63 engine. The warranty covers the pump for 10 years or 120,000 miles. BMW is not recalling the pump and no reason was given for the extension of the warranty.

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Inspecting Fuel Tanks For Filter Clogs

Any number of things may cause a fuel filter to plug up. One is a rusty fuel tank. Steel fuel tanks are coated inside with a special “tern” plating to resist corrosion. Over time, the protective plating can wear away and expose the steel, making it vulnerable to corrosion. Water in the fuel accelerates the process.

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VIDEO: Saddle Style Fuel Tanks And Transfer Pumps

Andrew Markel explains the inner workings of saddle style fuel tanks and how the transfer pump keeps the primary pump ready to deliver fuel to the system. Sponsored by Bosch Automotive Service Solutions.

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US Motor Works Revamps Fuel Pump U And Water Pump U Websites

The company says it is easier than ever to navigate to any of the brands websites directly from Fuel Pump or Water Pump U home pages.

Direct Injection Diagnostics: Taking Pressure Readings

Direct injection is becoming standard on more and more late-model vehicles. These systems can be a diagnostic challenge, but with the right foundation, problems can be solved profitably.

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Diagnosing Pulse-Width Modulated PWM Fuel Pumps

Just this summer, I experienced a situation in which the fuel pump had been replaced four different times on a single vehicle with no result because the various repair shops attempting to repair the vehicle didn’t understand how to diagnose a pulse-modulated fuel delivery system. Here are five things you should know about diagnosing them.

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