Discovery 1 95 model FPR hose

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hi_arshard

New Member
Posts
4
Car : Discovery 1 3.9L V8i
What happened if the fuel pressure regulator vacuum hose is removed? I noticed FPR vacc hose is missing.
 
Well what it does, it ensures that fuel rail pressure is maintained at a constant pressure difference of 2.5bar above that of the manifold. When pressure exceeds the regulator setting excess fuel is returned to the fuel tank.

So it seems that isn't happing so replace the hose.
 
hi_arshard said:
Car : Discovery 1 3.9L V8i
What happened if the fuel pressure regulator vacuum hose is removed? I noticed FPR vacc hose is missing.
Click to expand...
discool said:
Well what it does, it ensures that fuel rail pressure is maintained at a constant pressure difference of 2.5bar above that of the manifold. When pressure exceeds the regulator setting excess fuel is returned to the fuel tank.

So it seems that isn't happing so replace the hose.
Click to expand...
Great… thanks. I had black smoke and engine not producing enough power is it becoz of this ?
 
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