Electric fuel pumps on the other hand are capable of operating at pressures between 30 and 40 psi. They tend to be more reliable.
How A Fuel Pump Works How A Car Works
Mechanical fuel pump vs electric. Generally you will find that electrical fuel pumps are located in the fuel tank in order to use the fuel in the tank to cool the pump and ensure a steady supply of fuel. Per square inch psi. Electric although mechanical and electric fuel pumps each have their share of pros and cons sometimes it all comes down to practicality. The common issues of a mechanical fuel pump include leakage of fuel into the crankcase due to a ruptured or leaky diaphragm vapor lock in the pump fuel pressure drop faulty diaphragm spring etc. Mechanical fuel pump vs electric. Mechanical fuel pumps are manufactured to operate at pressures between 4 and 6 lbs.
Usually a mechanical pump is preferred over an aftermarket electric fuel pump. I installed a low pressure facet pump about 4 or 5 years ago and its been very reliable. For some the convenience and cost of a mechanical fuel pump might outweigh the idea of using an electric pump. However sometimes that wont work. Electric pump is hooked up to a relay that senses rotation of the distributor which then energies the pump. For most carbureted fuel systems streetstrip any off the shelf performance mechanical pump will handle an engine rated under 450hp just fine.
Mechanical pumps are quiet require minimal effort to install and of course there is no wiring to worry about. In my old 47 chevy the engine i had swapped in had an issue. Electric fuel pumps are designed for boosted engines such as fuel injection that require higher flow rates and pressure outputs. The obvious advantages of a mechanical pump are that they dont make any noise and they dont require any additional plumbing or wiring. In place of the original mechanical pump i installed a blank plate. The reason for this was because fuel injection systems operate more efficiently at a higher fuel pressure than mechanical pumps can generate.
Gallery of Mechanical Fuel Pump Vs Electric
