VR Fuel Pressure Readings

[smarty091]

heyy all
just wondering if anyone knows what the fuel pressure reading should be for VR Calais

any info would be great thanx
smarty091..

[ephect]

a quick search would have bought up this thread: VS fuel pressure which wasnt too long ago has the pressure readings in there.

do you suspect yours is lower than what it should be?

[smarty091]

a quick search would have bought up this thread: VS fuel pressure which wasnt too long ago has the pressure readings in there.

do you suspect yours is lower than what it should be?

yehh i did a pressure test on my car today and got 35Psi not sure if thats ok at idle. when i blocked the return line and it went up to about 60psi.

it has a misfire underload. changed plugs leads coil pack DFI module and injectors and is still there thinking it might be fuel pressure regulator???

you have any ideas.

[ephect]

nup that pressure is fine, 235-245kpa is the range, and 35psi is roughly 240kpa so its within the range.

have you done an error code check? to see if there are any codes logged?

[smarty091]

nup that pressure is fine, 235-245kpa is the range, and 35psi is roughly 240kpa so its within the range.

have you done an error code check? to see if there are any codes logged?

yeh checked that no faults codes were logged.

[ephect]

sorry the range is

idle = 240-260kpa
engine off = 280-320kpa

urs is at the bottom of the range, you could change the fuel pressure reg, you've changed the normal parts that cause this problem.

hows ur injectors? recently been cleaned or replaced?

[smarty091]

sorry the range is

idle = 240-260kpa
engine off = 280-320kpa

urs is at the bottom of the range, you could change the fuel pressure reg, you've changed the normal parts that cause this problem.

hows ur injectors? recently been cleaned or replaced?

yehh replaced injectors already might try fuel reg see what happens.

[immortality]

the ideal pressure with no vacuum should be 43.5psi (thats what the injectors are rated at) so the 280-320kpa or 40.5-46psi range is correct, although i think the range is a bit to wide personally. to check simply remove the vacuum hose(from the regulator) when the engine is running

the above mentioned pressures are correct from VN to VS. from VT onwards they increased the pressure on the injectors for 3bar to 3.5bar(50psi)