A malfunctioning fuel pump certainly can make it difficult to get the car started and there many things that lead up to this scenario. A higher-than-normal opened circuit resistance in the engine control module (ECM) may result in immediate fuel pump delivery of less than desirable pressure that does not adequately supply the required amount of fuel to the engine. Most vehicles will require a fuel pump that offers at least 30 to 70 psi – pound per square inch. If the pump is unable to establish this pressure, the engine may not start easily due to lack of ignition.
In fact, electrical issues are another major factor. A lot of fuel pumps have electrical connections that can corrode or break as time passes. Looking at auto fuel system statistics, almost 40 percent of fuel pump issues trace back to electrical-related problems. A breakdown in the electrical network may have made it difficult for the fuel pump to receive its required power, causing problems starting the engine.
In addition, dirty fuel filters can worsen the situation. Even worse, they can completely impede the flow of fuel altogether if you haven't changed them in >30k miles. As for a fuel filter, an automotive expert from Challenge Automotive Services Sarah Thompson says, “A clean fuel filter is essential; otherwise even a good fuel pump will have difficulty delivering the correct amount of fuel. Blocked filters restrict fuel delivery, making the car harder to start.
Even temperature extremes can be a fuel pump killer. Most pumps run most effectively in a certain temperature range, and overheating can cause them to break down. According to the Automotive Service Association, overheating is one of the leading causes behind 15% of pump failures. An overheated pump will have a harder time pumping, which can quickly turn into poor cranking issues with the car.
The other big concern is low fuel. Driving a car on an empty tank can bring air into the fuel lines and this may lead to vapor lock, which causes difficulty for the engine to start. To avoid running into these problems, AAA advises drivers to keep the tank at least one-quarter full.
In the end, a bad fuel pump can cause great hindrance to a car starting. Insisting on regularly maintaining the fuel system — timely replacement of filters, a periodic check of electrical connections, a sufficient amount of fuel in tanks — will allow drivers to minimize starting difficulties. If you are looking for fuel pump alternatives then please do be sure to take a look at Fuel Pump because there is the best and top rated options backed by quality Fuel Pump that will provide support in your vehicle ensuring it performs at its optimum!