The amount of fuel pressure drop between idle and wide-open throttle. On the other hand, the Bosch VP44 injection pumps, which happen to be about $1,200 to replace. It's like the same as running the engine with low oil pressure it will continue to run, but the damage to the engine will occur. Now always remember that the only lubrication the Bosch VP44 injection pump will see is the fuel itself so if you don't have enough fuel pressure it will cause damage to the Bosch VP44 injection pump. However, excessive fuel pressure will heat the fuel and reduced the cooling ability of the fuel. So a little extra fuel pressure is a good thing because it ensures the Bosch VP44 injection pump stays cooled and lubricated properly. Now take notice to the overflow valve is set for 14 PSI so excessive pumping of fuel does nothing for performance except create more heat in the fuel, which in turns reduces the cooling ability of the fuel and adds more stress to the lift pump. This is undocumented maximum pressure is 20 PSI. Yellow zone is a warning that you should check the fuel filter, lift pump performance, overflow valve, etc. You want the needle to stay in the green at all times. Here is a colorize fuel pressure gauge to give you a clue of the fuel pressure span you want. It should never fall below 10 PSI at all. Normal fuel pressure should float about 14-15 PSI running down the pavement. This is for your Dodge Cummins Turbo diesel truck with a Bosch VP44 injection pump. Here is a copy of the fuel system specifications from the Dodge Factory Service Manual. A member of our team can also help you with any questions you might have about FASS's systems.Fuel Pressure Specification For Bosch VP44 Injection Pumps
We can help you choose one that matches your applications requirements and then ensure it is ready for the rigors of every day use. If your truck needs a new fuel system and a FASS seems like the right fit, contact Carolina Classic Trucks today and ask to learn more about which model will best fit your diesel truck. If this is needed, we recommend the Bean Diesel Performance Sump, which we are also an authorized dealer for. If you do opt for a FASS system, you may also need to install a draw straw or sump to ensure smooth fuel movement from the system. One of the most common situations is after installation of a tuner or if there are significant issues with any of the above issues. Not every truck needs an entire new fuel system, so when should you consider one of the systems listed below. When to Choose a FASS Fuel System for your Dodge Cummins Here are some specific benefits you may see with such an upgrade:įor these reasons, we often recommend the FASS system and are an authorized VIP dealer for the FASS fuel systems listed below. The FASS fuel system is an essential solution to a number of key issues that your truck may have - from decreased injector life to poor fuel economy to general poor performance. For a Dodge Cummins fuel system, one of the best options on the market is the FASS titanium lift pump. One of the most essential upgrades you can make to your diesel truck - one that will significantly improve performance in a number of key areas is replacement of the fuel system.
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