Fuel pressure, please help !!!!
#1
Fuel pressure, please help !!!!
Got a bit of an issue with fuel pressure.
Usually turn ignition on and fuel pressure rises to 3.5 bar and stays there. Even if you turn ignition off it will sustain pressure for a while.
Tonight however, turned ignition on. Pressure rose as normal to 3.5 bar (while it was priming) but as soon as the fuel pump went quiet I lost all pressure. Ignition was still on and still no pressure.
Any ideas ????
Recently changed from walbro to HRC.
Usually turn ignition on and fuel pressure rises to 3.5 bar and stays there. Even if you turn ignition off it will sustain pressure for a while.
Tonight however, turned ignition on. Pressure rose as normal to 3.5 bar (while it was priming) but as soon as the fuel pump went quiet I lost all pressure. Ignition was still on and still no pressure.
Any ideas ????
Recently changed from walbro to HRC.
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#8
Scooby Regular
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I'd guess your running a after market FPR Matt,I have this trouble as well on my Fuellab FPR but it is overnight the pressure backs off and usually takes 2 times to fire properly,I have been stratching my head over it and just give up and figured oh well as the pressure holds fine while running.
#13
Unmapped 12.4s @ 105
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Location: Newcastle. 330bhp-289lb/ft @ 1bar boost - 12.4s @ 105mph
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Failed non return valve on the pump?
Don't think it's a problem, mine has never held fuel pressure if I prime the system then off the electrics. Fuelab reg BTW.
Don't think it's a problem, mine has never held fuel pressure if I prime the system then off the electrics. Fuelab reg BTW.
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