the  fuel pump in my `89 efi leone has stopped working ,  i took  the old one out and has what looks like to be a pressure regulator  ? at the end of it.  looked at replacement ones  and they dont have this .  any more info ?

 

The thing on the OEM pump is a pulsation damper.  Not critical.  There are 2 more up at the throttle body anyway.

 

 

Edited January 7, 20206 yr by DaveT

Is the engine SPFI or MPFI, single port fuel injection or multi port fuel injection?

They use different fuel pumps that run at different pressures.

Are there numbers on the old pump?

doesnt  the fuel pressure regulator set the  fuel pressure,  not the actual pump ?

 

Within a range.  The different engines require different flow rates at different pressures, and the pump has to match the load.  

The regulated pressure is much lower than the dead-head pressure. The 80's Ford F-150 frame rail booster pumps are typically just fine for any of the EA fuel injection applications. The pulse damper can be eliminated, and if you get a modern pump it will likely be a turbine style and won't have those pressure pulses anyway. 

GD