Fuel injector performance and fuel pump<(), how does it work? The fuel pump is important for maintaining the right fuel pressure in your car to ensure smooth running of fuel injectors. Most common rail engines require a constant pressure of 40–60 PSI (pounds per square inch) to properly atomize the fuel for an internal combustion engine. If the fuel pump cannot supply a sufficient amount of pressure, then the injectors may not be able to deposit enough fuel in order for the engine to work properly, causing a rough idle or stall A pressure loss of as little as 10 PSI can decrease fuel injector efficiency by more than 25%, which is enough that you would see a substantial decrease in engine power and fuel mileage.
Your fuel injectors need proper and consistent fuel streaming to perform correctly. This makes a difference because in the combustion chamber, the proper amount of fuel might not be sprayed by the injectors due to lack of pressure and consequently disrupts air-fuel ratio. According for a study completed by the Society of Automotive Engineers, defective pumps that cause pressure variations within the fuel system can increase emissions by up to 30% and decrease overall engine efficiency by as much as 15%.
This is where the idea of fuel starvation typically enters the fray when talking about fuel pumps and injectors. Fuel starvation happens when the pump does not deliver fuel in adequate #s, making injectors to be over worked leading to their failure. This can significantly reduce the service life of the injectors, which typically operate well for 50,000 to 100,000 miles.
Vehicle manufacturers issued a recall of more than 200,000 vehicles in one case alone for defective fuel pumps causing widespread fuel injector failures. Those incorrect fuel pumps sent varying fuel pressure leading to injector performance issues that cause engines to shut off and run poorly.
And as Henry Ford is famously quoted: “Quality means doing it right when no one is looking.” It applies directly to fuel pumps and injectors. Inaversely, injectors simply cannot achieve the finest mist for injector systems without proper fuel pressure and this could result in effecting the performance of vehicles. Fuel injectors perform the best when they receive the ideal volume of gas, and a healthy fuel pump helps provide that exact level, keeping engine efficiency even higher.
A failing fuel pump can also be the ultimate cause for obtaining an expensive repair or replacement of your injectors. Fuel injectors cost between $300 and $700, while replacing a fuel pump could end up costing between $500 to $1,000. If you act when the fuel pump starts to go out, not only can you save your injectors from damage, but you could avoid having to spend these big repair costs.
So to summarize it, a fuel pump that works fine makes sure that the injectors work and provide peak performance over time. The functions of these two parts are related to ensuring consistent fuel line pressure for good combustion and overall performance of the engine. To learn more about Fuel Pumps, go to Fuel Pump.