D5 Bosch Fuel Pump Advice Needed

[zakmuh]

Morning all.

My 2007 XC90 D5 cranking but would not start. I've found the high pressure pump is not sending any fuel to common rail, not even a drop. Pretty decent amount of fuel, with a steady flow from tank is getting to HPFP but it wouldn't get into high pressure chamber (plungers). Please see below video...

https://youtu.be/aFz4gaPUuvk

In this video I'm checking the SCV (suction control valve or fuel control valve or fuel metering solenoid) connected to the pump. SCV gets closed when ignition ON and very small amount of air getting to plunger side. Is this how SCV should work?

I'd highly appreciate if you could advise me on this

Thanks

[zakmuh]

Please see the video below. I took the pump out and filmed camshaft rotation and then outlet flow when cranking

https://youtu.be/sgYnRYZORvs

Thanks

[zakmuh]

SOLVED!

Car is now sorted. The issue I had was...I had not done the priming correctly, therefore there were lots of air in the fuel line. I did the key On and OFF cycle for over 20 times (as advised by Volvo) and then car started straight away.

If you remove any fuel system line (like a hose or a banjo bolt or high pressure pipe etc), it sucks air in then stops sending fuel to common rail. When you turn the key to ON (ignition on) and if you have air then you could hear fuel flowing in there inside the fuel filter housing under rear passenger seating location. So you have to prime until you hear nothing but whining noise. This is achieved by above method, ON and then OFF

Cheers

[passenger]

Thanks for advice