What can cause pressure bleedoff...

[mytight95]

I have new fuel gauge installed, new pressure regulator, and soon to have new filter, and new fuel pump installed..............................


The problem i am having is, after the car is completely warmed up i don't have the fuel pressure i do when i fiirst crank the car, and when the car is switched off it takes only a few seconds to bleed down to ZERO PSI......on the fuel pressure.......


Now is the pump or the filter gonna have anything to do with this problem, or do i have a problem elsewhere.........I had this problem before the regulator install with the factory regulator as well..........just for info


thanks

jason

 

[RIO5.0]

Sounds like your gage is telling you the status of the pump...its getting old....
Bleeding to zero instantly is the pump regulator gone bad....this will be gone with a new pump...mine will hold the pressure good now...
2nd ???? mine will run a slighly lower pressure once warm...long as it heads to your max setting while your romping on it your ok....

 

[mytight95]

thats the problem after the car has been running a while........ It loses around 10 psi.....myabe a little more...


I think the pump is gonna get rid of this problem....


jason