Join Date: May 2013
Car: Legacy 3.0R 6MT
Feedback Score: 0 reviews
Fuel pressure increase slowly when i disconnect vacuum line
I have a fuel pressure problem.
The car is an legacy 2.2 1993.
At idle the pressure is 28 psi 1.9 bar .
The problem is when i disconnect the vacumm line on the fuel pressure regulator, the pressure goes up to 2.4 bar 35 psi but its take 2.5 seconds.normaly it should rise with no delay ?
Wath can make the fuel pressure regulator increasing the pressure so slowly ?
I have replaced the fuel pump and when i pinch the return line the pressure rise to 5 bar 70 psi with no delay
I have try to swap 2 old fuel regulator but the problem stay he same.
I dont want to buy an new fuel pressure regulator when not necessary....
Have you an idea ?