DIY Manual has a section on changing fuel filters and bleeding the system afterwards.
- the manual does not say to fill the new filter before putting it on
- it DOES say that you must open the air bleed port on top of the filter, then use the hand pump to force air out of the system - as evidenced by fuel eventually coming out of the air bleed port.
It will save you a LOT of time if you fill the new filter with fuel before installation
. Then you will have much less air to purge from the system. This is good practice for all filters engine or genset.
Alternatively, if you have an electric fuel pump
in-line, you can just spin on the new filter and run the pump for a while until the air is purged via the tank return line.
I have the Volvo DIY manual in .PDF form (3 files) if you want it. Send me an email
/ PM and I'll get it to you.