Year of Manufacture *: 2005
Engine Size and Code *: 1.4 16v CDTi - Citroen/Peugeot
( Optional ) ECU Type: Seimens
( Optional ) Scanner Used: Verus, IDS, Picoscope
( Optional) Fault Codes: None logged
Blue = FRP, Red = MAF
The fuel pressure regulator and suction control valve were scoped and appeared to be ok, but, when speaking to my local diesel specialist they frequently have trouble with reg and SCV solenoids on the pump and suggested replacing them.
So after replacing them it pulls much better up through the gears, MAF is up to 4.1v and FRP is upto 3.9v as can be seen below (and a slight dip at around 2.6v) but the fluctuation of fuel pressure is still present at light throttle.
FRP signal.
I have been told that these piezo injectors cannot be tested, is this so?
The leak off pipes are virtually impossible to get to so a leak off test would be difficult.
Any suggestions would be much appreciated.
Thanks, Martin.
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