2 Much Fuel Pressure

[96eclipsex]

If you have way to much fuel pressure in your fuel rail can it cause any problems other than broken fuel lines?

and what is over run?????

 

[blackGSX2g]

Fuel lines are usually burst rated to over 100+psi, and if you are pumping out that much you've got more important problems.

Too much fuel pressure would cause more fuel to be injected at each injector pulse, leading to a rich condition both on and off boost.

Over-run is referring to a fuel pressure regulator not being able to bleed off enough pressure to keep it where you want it, leading to an uncontrollable rise in pressure in the fuel rail.