hello guys i experience a problem with my car.
obd showed both codes

P0087 Fuel rail/system pressure too low
P0088 Fuel rail/system pressure too high

Car starts very difficult after long cranking.


Has anyone experienced same problem?
Possibly sollutions?


Thanks in advance!

myrikos said:

hello guys i experience a problem with my car.
obd showed both codes

P0087 Fuel rail/system pressure too low
P0088 Fuel rail/system pressure too high

Car starts very difficult after long cranking.


Has anyone experienced same problem?
Possibly sollutions?


Thanks in advance!

Click to expand...

Hmmm sounds like the fuel pressure regulator may be sticking open and closed....
As a result its messing up fueling big time

If fuel rail pressure is too low - diesels become very hard to start, as they require high pressure to get the fuel to atomis (fine misty spray) to help with combustion

Ziggy

i am gonna check the regulator.
i have changed the cr pressure sensor and remanufactured the hp pump but nothing again the same.

myrikos said:

i am gonna check the regulator.
i have changed the cr pressure sensor and remanufactured the hp pump but nothing again the same.

Click to expand...

Just thought is it a returnless system?
No fuel return?

Ziggy

i am waiting for new regulator ziggy i didnt received yet.
i also checked the injectors at a bosch center and they are in good contition

new regulator installed but the problem insist..

Need live data to see what fuel pressure engine thinks its getting vs manual data from a lressure guage..


Ziggy