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Fuel Pressure

Bronx

By Bronx,
in Four Door Family & Wagoneers

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bubba Grand Master

bubba

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Posted (edited)

3bar like all the other RB's :( but they have dual fuel pressure regs, the reasoning behind this I don't know.. last time I looked it appeared to have one on the IN and OUT of the rail :P

Edited by bubba
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Stagea_Neo Experienced

Stagea_Neo

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do you think it's to keep pressure in the fuel system equal?

similar with the air intake / blow off valve, it recirculates?

3bar like all the other RB's :D but they have dual fuel pressure regs, the reasoning behind this I don't know.. last time I looked it appeared to have one on the IN and OUT of the rail :D
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QWK32 Veteran

QWK32

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Posted

there is only one FPR, the other ones that look like fuel pressure regulators are actually fuel dampers. the neo has 2 of them, one on the fuel rail inlet up on the manifold and one on the return line next to the filter. i believe they are there to help smooth out fuel surging and pressure spikes which is probably an issue with the stock dual voltage fuel pump when it changes over.

fuel pressure at idle with the vacuum line connected to the FPR is 2.5 kg/cm2 which about 35psi. with the vacuum line removed it is 3.0 kg/cm2 which is about 42psi.

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