The sole purpose of the fuel pump check valve is to keep the pumped fuel from going back into the fuel pump. However, this small function does a lot of things for a car's performance. A faulty fuel pump check valve may cause vehicle stalling after a short time of running, a long crank time that lasts up to 10 seconds, and having no ignition at all. If these three signs are evident in your car, you might have to replace your fuel pump check valve. Before you choose the replacement, it is better that you know some things to make the correct decisions.
Knowing the gender
Needless to say, each car model is different from the other. A small part such as the fuel pump check valve is not an exception. You need to consider the fuel pump outlet of your car. Does it have a male or a female thread? If the fuel pump outlet has male thread, you need to buy a check valve with female thread and vice versa. This is a factor that has been often overlooked by many. They only realized that they have bought the wrong thread once they are already underneath their car and about to replace the fuel pump check valve.
Handling the pressure
The fuel pump check valve is directly connected to the outlet of the fuel pump body. This puts the check valve into direct contact of the pressure coming from the pump. With this in mind, it is important to buy a fuel pump check valve that can handle as much pressure as what the pump can produce. The normal pressure a fuel pump check valve can handle is around 50 psi to 80 psi. Nonetheless, check the pressure range of the fuel pump in your car and buy the check valve that can handle it.